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    Fuzzy match across codes, option descriptions, and model aliases. Every result is graded and, where the factory documents it, cited.

    Source document

    docs/rpo/cadillac/ct4-alpha-2.md

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    Rendered verbatim from the reference. Factory citations shown as ⛭ GM Heritage — …. For filtering, badges, and crosslinks, use the interactive CT4 — Alpha 2 (2020–2026) page.

    Cadillac CT4 — Alpha 2 (2020–2026)

    The Cadillac CT4 is a compact rear- or all-wheel-drive sedan on GM's Alpha 2 platform, sold in North America from the 2020 model year until production ended in June 2026 (Wikipedia); the NICB VIN manuals list the Luxury, Premium Luxury, Sport and V-Series trims from 2020 with Luxury+, adding a Premium Luxury Special Edition in 2021 and the V-Blackwing in 2022. Its engines are the 2.0L turbo LSY, the 2.7L turbo L3B and, in the V-Series Blackwing, the 3.6L twin-turbo V6 LF4. The factory rows come from the 2025 and 2026 GM Fleet Order Guides, which list the CT4 and the CT4-V/CT4-V Blackwing separately (the two lists are not word for word the same). The 2020 paint, interior and trim-group rows and the 2024 engines come from GM Authority; no GM document or other source for 2021 through 2023 was found, and 2024 has no document beyond GM Authority's specifications.

    Codes

    Engines

    Code Description Years Models/Notes Confidence
    L3B Engine, 2.7L turbo, 4 cylinder, SIDI, automatic stop/start 2024–2026 V-Series: S; Premium Luxury: O; the CT4 guides print 310 hp and the CT4-V guides 325 hp; 2024 from GM Authority's 2024 CT4 specifications (RPO LSY and L3B listed) ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.15 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.7 · 2026 cadillac ct4 fleet order guide, p.14 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.8 confirmed
    LF4 Engine, 3.6L V6 twin turbo, SIDI, DOHC, VVT 2025–2026 only in: CT4-V and CT4-V Blackwing; V-Series Blackwing: S ⛭ GM factory document — 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.7 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.8 confirmed
    LSY Engine, 2.0L turbo, 4 cylinder, SIDI, automatic stop/start 2024–2026 only in: CT4; all trims: S; 2024 from GM Authority's 2024 CT4 specifications (RPO LSY and L3B listed) ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.7 · 2026 cadillac ct4 fleet order guide, p.7 confirmed

    Transmissions

    Code Description Years Models/Notes Confidence
    MG9 Transmission, 6 speed manual 2025–2026 only in: CT4-V and CT4-V Blackwing; V-Series Blackwing: S; V-Series Blackwing only; the guides pair it with an upgrade to the 10 speed automatic MHU ⛭ GM factory document — 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.10 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.9 confirmed
    MHA Transmission, 8 speed automatic 2025–2026 only in: CT4; all trims: S ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.7 · 2026 cadillac ct4 fleet order guide, p.7 confirmed
    MHU Transmission, 10 speed automatic 2025–2026 only in: CT4-V and CT4-V Blackwing; V-Series Blackwing: O; V-Series Blackwing option; requires the Driver Assist Package Y5Y in the guides ⛭ GM factory document — 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.16 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.16 confirmed
    MQA Transmission, 10 speed automatic 2025–2026 V-Series: S; Premium Luxury: O; in the CT4 guides an upgrade from the 8 speed automatic MHA when the 2.7L L3B is ordered ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.33 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.8 · 2026 cadillac ct4 fleet order guide, p.30 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.9 confirmed

    Axles

    Code Description Years Models/Notes Confidence
    F46 Drivetrain, all-wheel drive 2025–2026 Luxury, Premium Luxury, Sport, V-Series: O ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.15 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.15 · 2026 cadillac ct4 fleet order guide, p.13 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.15 confirmed
    G80 Differential, mechanical limited-slip 2025–2026 only in: CT4-V and CT4-V Blackwing; V-Series: S ⛭ GM factory document — 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.7 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.8 confirmed
    G96 Differential, electronic limited-slip 2025–2026 only in: CT4-V and CT4-V Blackwing; V-Series Blackwing: S ⛭ GM factory document — 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.7 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.8 confirmed
    GT4 Axle, rear, 3.73 ratio 2025–2026 only in: CT4-V and CT4-V Blackwing; V-Series Blackwing: S ⛭ GM factory document — 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.10 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.8 confirmed
    HRD Axle, rear, 2.85 ratio 2025–2026 Luxury, Premium Luxury, Sport, V-Series: S; V-Series Blackwing: O; on the V-Series Blackwing the guides include it only with the 10 speed automatic MHU ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.7 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.7 · 2026 cadillac ct4 fleet order guide, p.7 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.9 confirmed
    RWL Drivetrain, rear-wheel drive 2025–2026 all trims: S ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.6 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.7 · 2026 cadillac ct4 fleet order guide, p.7 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.8 confirmed

    Packages & Trims

    Code Description Years Models/Notes Confidence
    1SB Equipment group, Luxury 2020, 2025–2026 CT4 Luxury; 2020 from GM Authority's 2020 CT4 interior colors page ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.1 · 2026 cadillac ct4 fleet order guide, p.1 confirmed
    1SD Equipment group, Premium Luxury 2020, 2025–2026 CT4 Premium Luxury; 2020 from GM Authority's 2020 CT4 interior colors page ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.1 · 2026 cadillac ct4 fleet order guide, p.1 confirmed
    1SE Equipment group, Sport 2020, 2025–2026 CT4 Sport; 2020 from GM Authority's 2020 CT4 interior colors page ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.1 · 2026 cadillac ct4 fleet order guide, p.1 confirmed
    1SF Equipment group, V-Series 2020, 2025–2026 CT4-V V-Series; 2020 from GM Authority's 2020 CT4 interior colors page ⛭ GM factory document — 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.1 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.1 confirmed
    1SP Equipment group, V-Series Blackwing 2025–2026 CT4-V Blackwing ⛭ GM factory document — 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.1 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.1 confirmed
    5WF LPO, Battery Protection Package 2025–2026 ⛭ GM factory document — 2025 cadillac ct4 fleet order guide rpo codes, p.1 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide rpo codes, p.1 · 2026 cadillac ct4 fleet order guide rpo codes, p.1 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide rpo codes, p.1 confirmed
    CFV Carbon Fiber 2 Package 2025–2026 only in: CT4-V and CT4-V Blackwing; V-Series Blackwing: O ⛭ GM factory document — 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.13 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.12 confirmed
    CFZ Carbon Fiber 1 Package 2025–2026 only in: CT4-V and CT4-V Blackwing; V-Series Blackwing: O ⛭ GM factory document — 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.13 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.12 confirmed
    CWM Technology Package 2025–2026 Premium Luxury, Sport, V-Series, V-Series Blackwing: O; GM says it upgrades the gauge cluster (UDV) and adds the head-up display (UV6) ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.10 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.11 · 2026 cadillac ct4 fleet order guide, p.9 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.11 confirmed
    HME Lighting Package 2025–2026 V-Series Blackwing: S; Premium Luxury, Sport, V-Series: O; GM includes UGC and T87 ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.11 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.4 · 2026 cadillac ct4 fleet order guide, p.10 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.5 confirmed
    PCM Sun and Sound Package 2025–2026 only in: CT4; Luxury: O ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.10 · 2026 cadillac ct4 fleet order guide, p.9 confirmed
    PDB LPO, Onyx Package 2025–2026 ⛭ GM factory document — 2025 cadillac ct4 fleet order guide rpo codes, p.1 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide rpo codes, p.1 · 2026 cadillac ct4 fleet order guide rpo codes, p.1 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide rpo codes, p.1 confirmed
    PDH LPO, Interior Protection Package 2025–2026 ⛭ GM factory document — 2025 cadillac ct4 fleet order guide rpo codes, p.1 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide rpo codes, p.1 · 2026 cadillac ct4 fleet order guide rpo codes, p.1 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide rpo codes, p.1 confirmed
    PDJ LPO, Bronze Accent Package 2025–2026 ⛭ GM factory document — 2025 cadillac ct4 fleet order guide rpo codes, p.1 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide rpo codes, p.1 · 2026 cadillac ct4 fleet order guide rpo codes, p.1 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide rpo codes, p.1 confirmed
    PDK LPO, Red Accent Package 2025–2026 ⛭ GM factory document — 2025 cadillac ct4 fleet order guide rpo codes, p.1 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide rpo codes, p.1 · 2026 cadillac ct4 fleet order guide rpo codes, p.1 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide rpo codes, p.1 confirmed
    PDL LPO, Blue Accent Package 2025–2026 ⛭ GM factory document — 2025 cadillac ct4 fleet order guide rpo codes, p.1 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide rpo codes, p.1 · 2026 cadillac ct4 fleet order guide rpo codes, p.1 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide rpo codes, p.1 confirmed
    PDU LPO, Exterior Accent Package 2025–2026 only in: CT4 ⛭ GM factory document — 2025 cadillac ct4 fleet order guide rpo codes, p.1 · 2026 cadillac ct4 fleet order guide rpo codes, p.1 confirmed
    PDV LPO, Radiant Package 2025–2026 only in: CT4 ⛭ GM factory document — 2025 cadillac ct4 fleet order guide rpo codes, p.1 · 2026 cadillac ct4 fleet order guide rpo codes, p.1 confirmed
    WKA Super Cruise Package 2025–2026 Premium Luxury, Sport, V-Series: O; adds Super Cruise (UKL), which replaces UHX ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.10 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.11 · 2026 cadillac ct4 fleet order guide, p.9 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.11 confirmed
    Y19 Cold Weather Package 2025–2026 2025: V-Series Blackwing: S; Luxury, Sport, V-Series: O; 2026: Luxury, V-Series Blackwing: S; GM includes heated seats (KA1) and a heated steering wheel (KI3) in the CT4 guides ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.10 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.1 · 2026 cadillac ct4 fleet order guide, p.1 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.1 confirmed
    Y26 Navigation Package 2025–2026 V-Series Blackwing: S; Luxury, Premium Luxury, Sport, V-Series: O; the CT4 lists name it Navigation and Bose Premium Audio Package; the CT4-V lists read Navigation Package ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.10 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.1 · 2026 cadillac ct4 fleet order guide, p.9 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.1 confirmed
    Y5X Driver Awareness Plus Package 2025–2026 all trims: S; GM includes UE4, UHX, UKC, UFG and TQ5 ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.1 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.1 · 2026 cadillac ct4 fleet order guide, p.1 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.1 confirmed
    Y5Y Driver Assist Package 2025–2026 Premium Luxury, Sport, V-Series: S; V-Series Blackwing: O; GM includes KSG, UGN and UVZ ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.1 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.1 · 2026 cadillac ct4 fleet order guide, p.1 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.1 confirmed
    Y6F Climate Package 2025–2026 2025: Premium Luxury, Sport, V-Series, V-Series Blackwing: O; 2026: Premium Luxury, Sport, V-Series: S; V-Series Blackwing: O; the CT4 guides include heated and ventilated seats (KA1, KU9) and a heated steering wheel (KI3) ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.10 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.11 · 2026 cadillac ct4 fleet order guide, p.1 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.1 confirmed
    ZLZ Petit Pataud Special Edition 2025 only in: CT4-V and CT4-V Blackwing; V-Series Blackwing: O; GM links it to Magnus Metal Frost paint and the Sky Cool Gray with Santorini Blue and Jet Black with Phantom Blue interiors in the 2025 guide ⛭ GM factory document — 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.11 confirmed

    Equipment

    Code Description Years Models/Notes Confidence
    37V Seat belt color, Santorini 2025 only in: CT4-V and CT4-V Blackwing; V-Series Blackwing: O ⛭ GM factory document — 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.23 confirmed
    53S Steering wheel, sueded microfiber 2025–2026 only in: CT4-V and CT4-V Blackwing; V-Series Blackwing: O ⛭ GM factory document — 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.13 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.12 confirmed
    58F Wheels, 18 inch (45.7 cm) alloy, Sterling Silver finish 2025–2026 only in: CT4; Premium Luxury: S ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.6 · 2026 cadillac ct4 fleet order guide, p.7 confirmed
    5A7 Spare wheel delete 2025–2026 all trims: S ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.5 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.5 · 2026 cadillac ct4 fleet order guide, p.6 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.6 confirmed
    5CS Shifter, sueded microfiber 2025–2026 only in: CT4-V and CT4-V Blackwing; V-Series Blackwing: O ⛭ GM factory document — 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.23 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.23 confirmed
    5JS LPO, Black mirror caps 2025–2026 ⛭ GM factory document — 2025 cadillac ct4 fleet order guide rpo codes, p.1 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide rpo codes, p.1 · 2026 cadillac ct4 fleet order guide rpo codes, p.1 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide rpo codes, p.1 confirmed
    5V5 LPO, Rear spoiler 2025–2026 only in: CT4 ⛭ GM factory document — 2025 cadillac ct4 fleet order guide rpo codes, p.1 · 2026 cadillac ct4 fleet order guide rpo codes, p.1 confirmed
    5XR LPO, Grille, Black 2025–2026 only in: CT4 ⛭ GM factory document — 2025 cadillac ct4 fleet order guide rpo codes, p.1 · 2026 cadillac ct4 fleet order guide rpo codes, p.1 confirmed
    5ZD LPO, Bronze wheel center cap 2025–2026 ⛭ GM factory document — 2025 cadillac ct4 fleet order guide rpo codes, p.1 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide rpo codes, p.1 · 2026 cadillac ct4 fleet order guide rpo codes, p.1 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide rpo codes, p.1 confirmed
    5ZE LPO, Red wheel center cap 2025–2026 ⛭ GM factory document — 2025 cadillac ct4 fleet order guide rpo codes, p.1 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide rpo codes, p.1 · 2026 cadillac ct4 fleet order guide rpo codes, p.1 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide rpo codes, p.1 confirmed
    5ZF LPO, Blue wheel center cap 2025–2026 ⛭ GM factory document — 2025 cadillac ct4 fleet order guide rpo codes, p.1 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide rpo codes, p.1 · 2026 cadillac ct4 fleet order guide rpo codes, p.1 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide rpo codes, p.1 confirmed
    5ZV LPO, Black spoiler 2025–2026 ⛭ GM factory document — 2025 cadillac ct4 fleet order guide rpo codes, p.1 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide rpo codes, p.1 · 2026 cadillac ct4 fleet order guide rpo codes, p.1 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide rpo codes, p.1 confirmed
    709 Seat belt color, Torch Red 2025–2026 only in: CT4-V and CT4-V Blackwing; all trims: O ⛭ GM factory document — 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.13 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.12 confirmed
    719 Seat belt color, Black 2025–2026 all trims: S ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.4 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.4 · 2026 cadillac ct4 fleet order guide, p.4 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.5 confirmed
    71B Seat belt color, Natural Tan 2025–2026 only in: CT4-V and CT4-V Blackwing; V-Series Blackwing: O ⛭ GM factory document — 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.23 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.23 confirmed
    A2X Seat adjuster, driver 8-way power 2025–2026 all trims: S ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.4 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.4 · 2026 cadillac ct4 fleet order guide, p.4 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.5 confirmed
    A45 Memory settings 2025–2026 Premium Luxury, Sport, V-Series, V-Series Blackwing: S ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.2 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.3 · 2026 cadillac ct4 fleet order guide, p.3 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.3 confirmed
    A7J Seat adjuster, front passenger 6-way power 2025–2026 only in: CT4; Luxury: S ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.4 · 2026 cadillac ct4 fleet order guide, p.4 confirmed
    A7K Seat adjuster, front passenger 8-way power 2025–2026 Premium Luxury, Sport, V-Series, V-Series Blackwing: S ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.4 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.4 · 2026 cadillac ct4 fleet order guide, p.4 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.5 confirmed
    AEF Window, power, passenger, Express Up/Down 2025–2026 all trims: S ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.5 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.5 · 2026 cadillac ct4 fleet order guide, p.5 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.6 confirmed
    AEQ Windows, power 2025–2026 all trims: S ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.5 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.5 · 2026 cadillac ct4 fleet order guide, p.6 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.6 confirmed
    AF6 Seat, driver power lumbar massage 2025–2026 2025: Sport, V-Series, V-Series Blackwing: O; 2026: Sport, V-Series: S; V-Series Blackwing: O ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.23 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.22 · 2026 cadillac ct4 fleet order guide, p.4 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.4 confirmed
    AHC Seat, driver manual cushion length adjustment 2025–2026 2025: Sport: S; V-Series, V-Series Blackwing: O; 2026: Sport, V-Series: S; V-Series Blackwing: O ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.3 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.22 · 2026 cadillac ct4 fleet order guide, p.4 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.4 confirmed
    AHE Seat, driver power seatback bolster 2025–2026 Sport, V-Series, V-Series Blackwing: S ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.3 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.4 · 2026 cadillac ct4 fleet order guide, p.4 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.4 confirmed
    AHF Seat, front passenger manual cushion length adjustment 2025–2026 2025: Sport: S; V-Series, V-Series Blackwing: O; 2026: Sport, V-Series: S; V-Series Blackwing: O ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.3 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.22 · 2026 cadillac ct4 fleet order guide, p.4 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.4 confirmed
    AHH Seat, front passenger power seatback bolster 2025–2026 Sport, V-Series, V-Series Blackwing: S ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.3 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.4 · 2026 cadillac ct4 fleet order guide, p.4 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.4 confirmed
    AJC Head restraints, front, 2-way adjustable 2025–2026 Luxury, Premium Luxury, Sport, V-Series: S; V-Series Blackwing: O ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.2 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.2 · 2026 cadillac ct4 fleet order guide, p.3 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.3 confirmed
    AJW Glass, laminated 2025–2026 all trims: S ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.4 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.4 · 2026 cadillac ct4 fleet order guide, p.5 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.5 confirmed
    AKE Seat, front passenger power lumbar massage 2025–2026 2025: Sport, V-Series, V-Series Blackwing: O; 2026: Sport, V-Series: S; V-Series Blackwing: O ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.23 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.22 · 2026 cadillac ct4 fleet order guide, p.4 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.4 confirmed
    AL0 Airbag, passenger sensing system 2025–2026 all trims: S ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.1 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.1 · 2026 cadillac ct4 fleet order guide, p.1 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.1 confirmed
    AL9 Seat adjuster, driver 2-way power lumbar 2025–2026 only in: CT4; 2025: Luxury, Premium Luxury: S; 2026: Luxury: S ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.4 · 2026 cadillac ct4 fleet order guide, p.4 confirmed
    AM9 Seats, rear split-folding 2025–2026 all trims: S ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.4 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.4 · 2026 cadillac ct4 fleet order guide, p.4 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.4 confirmed
    AQ9 Seats, front bucket 2020, 2025–2026 all trims: S; 2020 from GM Authority's 2020 CT4 interior colors page ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.4 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.4 · 2026 cadillac ct4 fleet order guide, p.4 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.4 confirmed
    AQJ Seats, front bucket 2025–2026 only in: CT4-V and CT4-V Blackwing; 2025: all trims: O; 2026: V-Series Blackwing: O ⛭ GM factory document — 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.23 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.22 confirmed
    AT8 LATCH system (lower anchors and tethers for children), for child restraint seats 2025–2026 all trims: S ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.2 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.3 · 2026 cadillac ct4 fleet order guide, p.3 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.3 confirmed
    AT9 Seat adjuster, front passenger 2-way power lumbar 2025 only in: CT4; Premium Luxury: S ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.8 confirmed
    ATH Keyless access 2025–2026 all trims: S ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.2 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.2 · 2026 cadillac ct4 fleet order guide, p.3 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.3 confirmed
    AVK Seat adjuster, driver 4-way power lumbar 2025–2026 2025: Sport, V-Series, V-Series Blackwing: S; Premium Luxury: O; 2026: Premium Luxury, Sport, V-Series, V-Series Blackwing: S ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.4 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.4 · 2026 cadillac ct4 fleet order guide, p.4 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.4 confirmed
    AVN Head restraints, rear outboard positions, 2-way adjustable 2025–2026 all trims: S ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.2 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.2 · 2026 cadillac ct4 fleet order guide, p.3 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.3 confirmed
    AVU Seat adjuster, front passenger 4-way power 2025–2026 2025: Sport, V-Series, V-Series Blackwing: S; Premium Luxury: O; 2026: Premium Luxury, Sport, V-Series, V-Series Blackwing: S ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.4 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.4 · 2026 cadillac ct4 fleet order guide, p.4 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.4 confirmed
    AXG Window, power 2025–2026 all trims: S ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.5 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.5 · 2026 cadillac ct4 fleet order guide, p.5 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.6 confirmed
    AYG Airbags 2025–2026 all trims: S ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.1 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.1 · 2026 cadillac ct4 fleet order guide, p.1 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.1 confirmed
    B34 Floor mats, carpeted front 2025–2026 only in: CT4; all trims: S ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.2 · 2026 cadillac ct4 fleet order guide, p.2 confirmed
    B35 Floor mats, carpeted rear 2025–2026 all trims: S; the CT4-V lists print it as deluxe carpeted rear ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.2 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.2 · 2026 cadillac ct4 fleet order guide, p.2 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.2 confirmed
    B4Z Performance Traction Management 2025–2026 only in: CT4-V and CT4-V Blackwing; all trims: S ⛭ GM factory document — 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.7 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.8 confirmed
    B53 Floor mats, deluxe carpeted front 2025–2026 only in: CT4-V and CT4-V Blackwing; all trims: S ⛭ GM factory document — 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.2 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.2 confirmed
    B56 Rocker molding, body-color 2025–2026 only in: CT4; Luxury, Premium Luxury: S ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.5 · 2026 cadillac ct4 fleet order guide, p.6 confirmed
    B6A Rocker moldings, body-color 2025–2026 Sport, V-Series: S; V-Series Blackwing: O; the CT4-V lists print it without "body-color" ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.5 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.5 · 2026 cadillac ct4 fleet order guide, p.6 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.6 confirmed
    B6K Sill plate cover 2025–2026 only in: CT4; Luxury, Premium Luxury: S ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.4 · 2026 cadillac ct4 fleet order guide, p.5 confirmed
    B70 Sill plate 2025–2026 Sport, V-Series, V-Series Blackwing: S ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.4 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.4 · 2026 cadillac ct4 fleet order guide, p.5 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.5 confirmed
    BTH Steering wheel, high performance 2025–2026 only in: CT4-V and CT4-V Blackwing; 2025: all trims: O; 2026: V-Series Blackwing: S ⛭ GM factory document — 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.13 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.5 confirmed
    BTV Adaptive Remote Start 2025–2026 Luxury, Premium Luxury, Sport, V-Series: S; V-Series Blackwing: O ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.1 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.1 · 2026 cadillac ct4 fleet order guide, p.1 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.1 confirmed
    BYO Foot rest, driver side 2026 only in: CT4; all trims: S ⛭ GM factory document — 2026 cadillac ct4 fleet order guide, p.2 confirmed
    C3Q Sill plate, front, unique 2025 only in: CT4-V and CT4-V Blackwing; V-Series Blackwing: O ⛭ GM factory document — 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.28 confirmed
    C59 Air vents, rear 2025–2026 all trims: S ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.1 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.1 · 2026 cadillac ct4 fleet order guide, p.1 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.1 confirmed
    C73 Tail lamps, neutral-density 2025–2026 Sport, V-Series, V-Series Blackwing: S ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.6 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.6 · 2026 cadillac ct4 fleet order guide, p.6 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.6 confirmed
    CE1 Wipers, front intermittent, Rainsense 2025–2026 Premium Luxury, Sport, V-Series, V-Series Blackwing: S ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.6 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.6 · 2026 cadillac ct4 fleet order guide, p.7 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.7 confirmed
    CF5 Sunroof, power 2025–2026 all trims: O ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.11 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.14 · 2026 cadillac ct4 fleet order guide, p.10 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.13 confirmed
    CJ2 Climate control, dual-zone automatic 2025–2026 all trims: S ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.2 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.2 · 2026 cadillac ct4 fleet order guide, p.2 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.2 confirmed
    D31 Mirror, inside rearview manual day/night 2025–2026 only in: CT4; Luxury: S ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.3 · 2026 cadillac ct4 fleet order guide, p.3 confirmed
    D52 Spoiler, rear 2025–2026 Sport, V-Series, V-Series Blackwing: S ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.5 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.5 · 2026 cadillac ct4 fleet order guide, p.6 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.6 confirmed
    D75 Door handles, body-color 2025–2026 Sport, V-Series, V-Series Blackwing: S ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.4 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.4 · 2026 cadillac ct4 fleet order guide, p.5 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.5 confirmed
    D7A Door handles, body-color 2025–2026 only in: CT4; Luxury, Premium Luxury: S ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.4 · 2026 cadillac ct4 fleet order guide, p.5 confirmed
    DD8 Mirror, inside rearview auto-dimming 2025–2026 Premium Luxury, Sport, V-Series, V-Series Blackwing: S ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.3 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.3 · 2026 cadillac ct4 fleet order guide, p.3 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.3 confirmed
    DEG Visors, driver and front passenger, illuminated vanity mirrors 2025–2026 all trims: S ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.5 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.5 · 2026 cadillac ct4 fleet order guide, p.5 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.6 confirmed
    DLL Mirrors, outside heated power-adjustable 2025–2026 only in: CT4; Luxury: S ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.5 · 2026 cadillac ct4 fleet order guide, p.6 confirmed
    DMB Mirrors, outside heated power-adjustable, body-color 2025–2026 Premium Luxury, Sport, V-Series, V-Series Blackwing: S ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.5 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.5 · 2026 cadillac ct4 fleet order guide, p.6 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.6 confirmed
    E22 Assist handles, rear outboard 2025–2026 all trims: S ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.1 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.1 · 2026 cadillac ct4 fleet order guide, p.1 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.1 confirmed
    E28 Assist handles 2025–2026 all trims: S ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.1 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.1 · 2026 cadillac ct4 fleet order guide, p.1 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.1 confirmed
    E5K LPO, Gloss Black grille trim 2025–2026 only in: CT4 ⛭ GM factory document — 2025 cadillac ct4 fleet order guide rpo codes, p.1 · 2026 cadillac ct4 fleet order guide rpo codes, p.1 confirmed
    EPH Electronic Precision Shift 2025–2026 V-Series: S; Premium Luxury, V-Series Blackwing: O ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.31 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.7 · 2026 cadillac ct4 fleet order guide, p.28 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.8 confirmed
    F55 Magnetic Ride Control 2025–2026 only in: CT4-V and CT4-V Blackwing; all trims: S ⛭ GM factory document — 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.7 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.8 confirmed
    FE2 Suspension, ride and handling 2025–2026 only in: CT4; all trims: S ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.7 · 2026 cadillac ct4 fleet order guide, p.7 confirmed
    FE3 Suspension, performance 2025–2026 only in: CT4-V and CT4-V Blackwing; V-Series: S ⛭ GM factory document — 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.7 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.9 confirmed
    FE4 Suspension, high-performance 2025–2026 only in: CT4-V and CT4-V Blackwing; V-Series Blackwing: S ⛭ GM factory document — 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.8 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.9 confirmed
    HS1 Safety Alert Seat 2025–2026 all trims: S ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.3 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.3 · 2026 cadillac ct4 fleet order guide, p.4 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.4 confirmed
    IOS Cadillac user experience 2025–2026 Luxury, Premium Luxury, Sport, V-Series: S ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.8 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.9 · 2026 cadillac ct4 fleet order guide, p.2 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.2 confirmed
    IOT Cadillac user experience with embedded navigation 2025–2026 V-Series Blackwing: S; Luxury, Premium Luxury, Sport, V-Series: O ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.19 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.2 · 2026 cadillac ct4 fleet order guide, p.17 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.2 confirmed
    J55 Brakes, Brembo front, V Performance 2025–2026 V-Series: S; Sport: O; the CT4-V lists add "performance 4-wheel antilock, 4-wheel disc" to the wording ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.14 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.6 · 2026 cadillac ct4 fleet order guide, p.13 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.7 confirmed
    J6B Calipers, Blue 2025–2026 Sport, V-Series, V-Series Blackwing: O ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.31 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.15 · 2026 cadillac ct4 fleet order guide, p.28 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.15 confirmed
    J6F Calipers, Red 2025–2026 Sport, V-Series, V-Series Blackwing: O ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.31 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.15 · 2026 cadillac ct4 fleet order guide, p.28 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.15 confirmed
    J6G Brakes, Brembo high-performance front and rear, 4-wheel antilock, 4-wheel disc with slotted rotors 2025–2026 only in: CT4-V and CT4-V Blackwing; V-Series Blackwing: S ⛭ GM factory document — 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.6 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.7 confirmed
    J6O Calipers, Bronze front and rear with V-Series logo 2025–2026 only in: CT4-V and CT4-V Blackwing; V-Series Blackwing: O ⛭ GM factory document — 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.15 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.15 confirmed
    J6P Calipers, Gray front and rear with V-Series logo 2025–2026 only in: CT4-V and CT4-V Blackwing; V-Series Blackwing: S ⛭ GM factory document — 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.7 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.8 confirmed
    J77 Brake, electronic parking 2025–2026 all trims: S ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.6 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.6 · 2026 cadillac ct4 fleet order guide, p.7 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.7 confirmed
    JE2 Brake linings, performance 2025–2026 only in: CT4-V and CT4-V Blackwing; V-Series Blackwing: S; V-Series: O ⛭ GM factory document — 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.6 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.7 confirmed
    JE5 Brakes, 4-wheel antilock, 4-wheel disc 2025–2026 only in: CT4; all trims: S ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.6 · 2026 cadillac ct4 fleet order guide, p.7 confirmed
    JF5 Pedals, alloy 2025–2026 Sport, V-Series, V-Series Blackwing: S ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.3 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.3 · 2026 cadillac ct4 fleet order guide, p.4 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.4 confirmed
    JJ2 Brake lining, noise and dust performance 2026 Luxury, Premium Luxury, Sport, V-Series: S ⛭ GM factory document — 2026 cadillac ct4 fleet order guide, p.7 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.7 confirmed
    JM8 Brake, automatic vehicle hold 2025–2026 Luxury, Premium Luxury, Sport, V-Series: S; V-Series Blackwing: O ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.6 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.6 · 2026 cadillac ct4 fleet order guide, p.7 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.7 confirmed
    K05 Engine block heater 2025–2026 Luxury, Premium Luxury, Sport, V-Series: O ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.16 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.16 · 2026 cadillac ct4 fleet order guide, p.14 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.16 confirmed
    K12 Air filter, pollutant 2025–2026 all trims: S ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.1 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.1 · 2026 cadillac ct4 fleet order guide, p.1 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.1 confirmed
    K34 Cruise control 2025–2026 Luxury, V-Series Blackwing: S ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.2 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.9 · 2026 cadillac ct4 fleet order guide, p.2 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.2 confirmed
    K4C Wireless phone charging 2025–2026 all trims: S ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.5 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.5 · 2026 cadillac ct4 fleet order guide, p.6 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.6 confirmed
    K6L Air filter, pollutant, odor and fine dust 2025–2026 Premium Luxury, Sport, V-Series, V-Series Blackwing: O ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.18 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.18 · 2026 cadillac ct4 fleet order guide, p.16 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.18 confirmed
    KA1 Seats, heated driver and front passenger 2025–2026 2025: V-Series Blackwing: S; Luxury, Premium Luxury, Sport, V-Series: O; 2026: all trims: S ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.23 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.4 · 2026 cadillac ct4 fleet order guide, p.4 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.4 confirmed
    KB7 Paddle shift controls, steering wheel mounted, alloy 2025–2026 Sport, V-Series: S; Premium Luxury, V-Series Blackwing: O ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.5 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.5 · 2026 cadillac ct4 fleet order guide, p.5 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.5 confirmed
    KBC Paddle shift controls, steering wheel mounted 2025–2026 only in: CT4; Luxury, Premium Luxury: S ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.5 · 2026 cadillac ct4 fleet order guide, p.5 confirmed
    KD4 Power outlet, front auxiliary, 12 volt 2025–2026 all trims: S ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.3 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.3 · 2026 cadillac ct4 fleet order guide, p.4 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.4 confirmed
    KI3 Steering wheel, heated 2025–2026 2025: V-Series Blackwing: S; Luxury, Premium Luxury, Sport, V-Series: O; 2026: all trims: S ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.24 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.4 · 2026 cadillac ct4 fleet order guide, p.5 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.5 confirmed
    KL9 Automatic stop/start 2025–2026 Luxury, Premium Luxury, Sport, V-Series: S ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.7 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.7 · 2026 cadillac ct4 fleet order guide, p.7 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.8 confirmed
    KNR Cooler, rear differential 2025–2026 only in: CT4-V and CT4-V Blackwing; V-Series Blackwing: S ⛭ GM factory document — 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.7 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.8 confirmed
    KPA Power outlet, rear auxiliary, 12 volt 2025–2026 all trims: S ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.3 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.3 · 2026 cadillac ct4 fleet order guide, p.4 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.4 confirmed
    KSG Adaptive Cruise Control 2025–2026 Premium Luxury, Sport, V-Series: S; V-Series Blackwing: O ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.2 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.2 · 2026 cadillac ct4 fleet order guide, p.2 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.2 confirmed
    KTI Tire inflator kit 2025–2026 only in: CT4-V and CT4-V Blackwing; V-Series Blackwing: S ⛭ GM factory document — 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.6 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.6 confirmed
    KU9 Seats, ventilated driver and front passenger seat cushions and seatbacks 2025–2026 2025: Premium Luxury, Sport, V-Series, V-Series Blackwing: O; 2026: Premium Luxury, Sport, V-Series: S; V-Series Blackwing: O ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.23 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.23 · 2026 cadillac ct4 fleet order guide, p.4 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.4 confirmed
    MCR SD card reader 2025–2026 all trims: S ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.3 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.4 · 2026 cadillac ct4 fleet order guide, p.4 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.4 confirmed
    MDB Moldings, Black 2025–2026 Sport, V-Series, V-Series Blackwing: S ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.5 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.5 · 2026 cadillac ct4 fleet order guide, p.6 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.6 confirmed
    N30 Steering wheel, Super Cruise 2025–2026 Premium Luxury, Sport, V-Series: O ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.24 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.24 · 2026 cadillac ct4 fleet order guide, p.22 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.23 confirmed
    N37 Steering column, manual tilt and telescoping 2025–2026 Luxury, Premium Luxury, Sport, V-Series: S ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.4 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.4 · 2026 cadillac ct4 fleet order guide, p.5 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.5 confirmed
    N38 Steering column, power tilt and telescoping 2025–2026 only in: CT4-V and CT4-V Blackwing; V-Series Blackwing: S ⛭ GM factory document — 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.4 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.5 confirmed
    NK4 Steering wheel, leather-wrapped 2025–2026 Sport, V-Series, V-Series Blackwing: S ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.8 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.4 · 2026 cadillac ct4 fleet order guide, p.5 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.5 confirmed
    NP5 Steering wheel, leather-wrapped 2025–2026 only in: CT4; Luxury, Premium Luxury: S ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.4 · 2026 cadillac ct4 fleet order guide, p.5 confirmed
    P0H OnStar Connect Plus, 12 months 2026 all trims: O ⛭ GM factory document — 2026 cadillac ct4 fleet order guide, p.37 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.38 confirmed
    P0I OnStar Connect Plus, 24 months 2026 all trims: O ⛭ GM factory document — 2026 cadillac ct4 fleet order guide, p.37 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.38 confirmed
    P0J OnStar Protect, 24 months 2025–2026 all trims: O; the 2025 lists call it OnStar Security ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.35 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.37 · 2026 cadillac ct4 fleet order guide, p.32 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.34 confirmed
    P0K OnStar Protect, 36 months 2025–2026 all trims: O; the 2025 lists call it OnStar Security ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.36 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.38 · 2026 cadillac ct4 fleet order guide, p.32 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.34 confirmed
    P0L OnStar Protect, 48 months 2025–2026 all trims: O; the 2025 lists call it OnStar Security ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.36 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.38 · 2026 cadillac ct4 fleet order guide, p.33 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.34 confirmed
    P0Q OnStar Protect, 60 months 2025–2026 all trims: O; the 2025 lists call it OnStar Security ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.37 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.38 · 2026 cadillac ct4 fleet order guide, p.33 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.35 confirmed
    P0U OnStar Protect, 12 months 2025–2026 all trims: O; the 2025 lists call it OnStar Security ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.35 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.37 · 2026 cadillac ct4 fleet order guide, p.32 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.34 confirmed
    P0V OnStar Telematics, 12 months 2025–2026 all trims: O; the 2025 lists call it OnStar Insights ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.37 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.39 · 2026 cadillac ct4 fleet order guide, p.35 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.36 confirmed
    P0W OnStar Telematics, 24 months 2025–2026 all trims: O; the 2025 lists call it OnStar Insights ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.37 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.39 · 2026 cadillac ct4 fleet order guide, p.35 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.37 confirmed
    P0X OnStar Telematics, 36 months 2025–2026 all trims: O; the 2025 lists call it OnStar Insights ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.38 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.39 · 2026 cadillac ct4 fleet order guide, p.36 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.37 confirmed
    P0Y OnStar Telematics, 48 months 2025–2026 all trims: O; the 2025 lists call it OnStar Insights ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.38 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.40 · 2026 cadillac ct4 fleet order guide, p.36 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.37 confirmed
    P0Z OnStar Telematics, 60 months 2025–2026 all trims: O; the 2025 lists call it OnStar Insights ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.38 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.40 · 2026 cadillac ct4 fleet order guide, p.36 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.38 confirmed
    P1N API Pro, 12 months 2026 all trims: O ⛭ GM factory document — 2026 cadillac ct4 fleet order guide, p.43 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.43 confirmed
    P1O API Pro, 24 months 2026 all trims: O ⛭ GM factory document — 2026 cadillac ct4 fleet order guide, p.44 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.44 confirmed
    P1P API Pro, 36 months 2026 all trims: O ⛭ GM factory document — 2026 cadillac ct4 fleet order guide, p.44 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.44 confirmed
    P1Q API Elite, 6 months 2026 all trims: O ⛭ GM factory document — 2026 cadillac ct4 fleet order guide, p.45 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.44 confirmed
    P1R API Starter, 6 months 2026 all trims: O ⛭ GM factory document — 2026 cadillac ct4 fleet order guide, p.41 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.41 confirmed
    P1S API Starter, 12 months 2026 all trims: O ⛭ GM factory document — 2026 cadillac ct4 fleet order guide, p.41 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.42 confirmed
    P1T API Starter, 24 months 2026 all trims: O ⛭ GM factory document — 2026 cadillac ct4 fleet order guide, p.42 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.42 confirmed
    P1U API Starter, 36 months 2026 all trims: O ⛭ GM factory document — 2026 cadillac ct4 fleet order guide, p.42 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.42 confirmed
    PPW Wireless Apple CarPlay and wireless Android Auto 2025–2026 all trims: S ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.5 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.5 · 2026 cadillac ct4 fleet order guide, p.6 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.6 confirmed
    PQG OnStar Connect Plus, 36 months 2026 all trims: O ⛭ GM factory document — 2026 cadillac ct4 fleet order guide, p.37 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.39 confirmed
    PQH OnStar Connect Plus, 48 months 2026 all trims: O ⛭ GM factory document — 2026 cadillac ct4 fleet order guide, p.38 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.39 confirmed
    PQI OnStar Connect Plus, 60 months 2026 all trims: O ⛭ GM factory document — 2026 cadillac ct4 fleet order guide, p.38 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.39 confirmed
    PQL OnStar Video Telematics with Hardware, 12 months 2026 all trims: O ⛭ GM factory document — 2026 cadillac ct4 fleet order guide, p.38 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.40 confirmed
    PQM OnStar Video Telematics with Hardware, 24 months 2026 all trims: O ⛭ GM factory document — 2026 cadillac ct4 fleet order guide, p.39 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.40 confirmed
    PQP OnStar Video Telematics with Hardware, 36 months 2026 all trims: O ⛭ GM factory document — 2026 cadillac ct4 fleet order guide, p.39 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.40 confirmed
    PQQ OnStar Video Telematics with Hardware, 48 months 2026 all trims: O ⛭ GM factory document — 2026 cadillac ct4 fleet order guide, p.40 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.41 confirmed
    PQT OnStar Video Telematics with Hardware, 60 months 2026 all trims: O ⛭ GM factory document — 2026 cadillac ct4 fleet order guide, p.40 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.41 confirmed
    PR6 SiriusXM, additional 9 months of the SXM Platinum Plan 2025 O on all trims; fleet and government order types; 2026 gives the code another meaning (API Elite, 24 months) ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.40 confirmed
    PR6 API Elite, 24 months 2026 O on all trims; fleet telematics data plan; another meaning than 2025 (SiriusXM, additional 9 months) ⛭ GM factory document — 2026 cadillac ct4 fleet order guide, p.46 confirmed
    PR7 SiriusXM, additional 21 months of the SXM Platinum Plan 2025 all trims: O ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.40 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.42 confirmed
    PR8 SiriusXM, additional 33 months of the SXM Platinum Plan 2025 all trims: O ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.40 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.42 confirmed
    PRE API Elite, 12 months 2026 all trims: O ⛭ GM factory document — 2026 cadillac ct4 fleet order guide, p.45 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.45 confirmed
    PZJ Wheels, 18 inch (45.7 cm) alloy, Pearl Nickel finish 2025–2026 Sport, V-Series: S; the 2025 CT4-V lists add "aluminum" before alloy ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.8 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.9 · 2026 cadillac ct4 fleet order guide, p.7 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.7 confirmed
    Q4A Tires, 235/40R18 all-season, self-sealing 2025–2026 only in: CT4; Premium Luxury: S ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.6 · 2026 cadillac ct4 fleet order guide, p.6 confirmed
    Q4C Tires, 235/40R18 summer-only, run-flat 2025–2026 only in: CT4-V and CT4-V Blackwing; V-Series: S ⛭ GM factory document — 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.9 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.6 confirmed
    Q4D Tires, 235/40R18 all-season, run-flat 2025–2026 Sport: S; V-Series: O ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.6 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.15 · 2026 cadillac ct4 fleet order guide, p.6 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.14 confirmed
    Q5O Tires, P225/45R17 all-season, self-sealing 2025–2026 only in: CT4; Luxury: S ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.6 · 2026 cadillac ct4 fleet order guide, p.6 confirmed
    Q6Z Wheels, 18 inch (45.7 cm) alloy, Satin Graphite finish 2025–2026 Sport, V-Series: O; the 2025 CT4-V lists add "aluminum" before alloy ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.14 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.15 · 2026 cadillac ct4 fleet order guide, p.13 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.14 confirmed
    Q7B Wheels, 18 inch (45.7 cm) alloy, Diamond Cut/Midnight Silver finish 2025–2026 only in: CT4; Premium Luxury: O ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.14 · 2026 cadillac ct4 fleet order guide, p.13 confirmed
    R37 Wheels, 18 inch (45.7 cm) alloy, Satin Graphite finish 2025–2026 only in: CT4-V and CT4-V Blackwing; V-Series Blackwing: O; the 2025 CT4-V list reads "aluminum alloy" ⛭ GM factory document — 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.15 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.14 confirmed
    R38 Wheels, 18 inch (45.7 cm) alloy, Polished/Dark Android finish 2025–2026 only in: CT4-V and CT4-V Blackwing; V-Series Blackwing: S; the 2025 CT4-V list reads "aluminum alloy" ⛭ GM factory document — 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.9 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.7 confirmed
    R65 Tires, 255/35ZR18 front, 275/35ZR18 rear, high-performance, summer-only 2025–2026 only in: CT4-V and CT4-V Blackwing; V-Series Blackwing: S ⛭ GM factory document — 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.6 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.7 confirmed
    R6P SiriusXM, 3 years 2025–2026 all trims: O ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.10 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.12 · 2026 cadillac ct4 fleet order guide, p.9 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.11 confirmed
    R7Z API Pro, 6 months 2026 all trims: O ⛭ GM factory document — 2026 cadillac ct4 fleet order guide, p.43 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.43 confirmed
    R8G OnStar One Fleet, 12 months 2025–2026 all trims: O; the 2025 lists call it OnStar One Business Plus ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.39 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.40 · 2026 cadillac ct4 fleet order guide, p.33 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.35 confirmed
    R8P OnStar One Fleet, 36 months 2025–2026 all trims: O; the 2025 lists call it OnStar One Business Plus ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.39 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.41 · 2026 cadillac ct4 fleet order guide, p.34 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.35 confirmed
    R8W OnStar One Fleet, 60 months 2025–2026 all trims: O; the 2025 lists call it OnStar One Business Plus ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.40 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.42 · 2026 cadillac ct4 fleet order guide, p.35 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.36 confirmed
    R8Z OnStar One Fleet, 48 months 2025–2026 all trims: O; the 2025 lists call it OnStar One Business Plus ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.40 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.41 · 2026 cadillac ct4 fleet order guide, p.34 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.36 confirmed
    R9L OnStar Digital Services, 3 years, deleted 2025–2026 all trims: O; another meaning than the next R9L row; removes R9M and the Super Cruise (UKL) 3 years; the 2026 lists read "Removes 3 Years of OnStar One" ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.11 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.12 · 2026 cadillac ct4 fleet order guide, p.10 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.12 confirmed
    R9L OnStar Basics, deleted (OnStar Fleet Basics for Fleet) 2025–2026 all trims: O; another meaning than the previous R9L row; included and only available on vehicles shipped to Puerto Rico, the Virgin Islands or Guam; the 2026 lists read "Removes OnStar Basics" ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.22 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.21 · 2026 cadillac ct4 fleet order guide, p.20 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.21 confirmed
    R9M OnStar One, 3 years 2025–2026 all trims: S; the 2025 lists read "3 Years of OnStar Digital Services" ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.3 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.3 · 2026 cadillac ct4 fleet order guide, p.3 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.3 confirmed
    R9V Mobile Service Plus, 4 years 2025–2026 all trims: O ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.11 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.12 · 2026 cadillac ct4 fleet order guide, p.10 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.12 confirmed
    R9W Mobile Service Plus, deleted 2025–2026 all trims: O ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.11 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.13 · 2026 cadillac ct4 fleet order guide, p.10 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.12 confirmed
    R9Y Mobile Service Plus, 1 year 2025–2026 all trims: O ⛭ GM factory document — 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.12 · 2026 cadillac ct4 fleet order guide, p.10 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.12 confirmed
    RFH OnStar One Fleet, 24 months 2025–2026 all trims: O; the 2025 lists call it OnStar One Business Plus ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.39 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.41 · 2026 cadillac ct4 fleet order guide, p.34 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.35 confirmed
    RFS API Elite, 36 months 2026 all trims: O ⛭ GM factory document — 2026 cadillac ct4 fleet order guide, p.46 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.45 confirmed
    RID Wheels, 17 inch (43.2 cm) alloy, Bright Silver finish 2025–2026 only in: CT4; Luxury: S ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.6 · 2026 cadillac ct4 fleet order guide, p.7 confirmed
    RIK LPO, Gloss Black nameplates 2025–2026 all trims: O ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.28 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide rpo codes, p.1 · 2026 cadillac ct4 fleet order guide, p.25 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide rpo codes, p.1 confirmed
    RQD Tires, 235/35R19 XL all-season, run-flat 2025–2026 Luxury, Premium Luxury, Sport, V-Series: O ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.30 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.29 · 2026 cadillac ct4 fleet order guide, p.27 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.28 confirmed
    RRR Wheels, 18 inch (45.7 cm) alloy, Tech Bronze finish 2025–2026 only in: CT4-V and CT4-V Blackwing; V-Series Blackwing: O; the 2025 CT4-V list reads "aluminum alloy" ⛭ GM factory document — 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.15 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.14 confirmed
    RSR Rear seat reminder 2025–2026 only in: CT4; all trims: S ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.3 · 2026 cadillac ct4 fleet order guide, p.4 confirmed
    RT2 Wheels, 18 inch (45.7 cm) alloy, Diamond Cut/Medium Android Satin finish 2025–2026 Sport, V-Series: O; the 2025 CT4-V lists add "aluminum" before alloy ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.14 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.15 · 2026 cadillac ct4 fleet order guide, p.13 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.14 confirmed
    RWU LPO, Cargo area organizer, collapsible 2025–2026 ⛭ GM factory document — 2025 cadillac ct4 fleet order guide rpo codes, p.1 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide rpo codes, p.1 · 2026 cadillac ct4 fleet order guide rpo codes, p.1 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide rpo codes, p.1 confirmed
    RYT LPO, Cadillac Edition first aid kit 2025–2026 ⛭ GM factory document — 2025 cadillac ct4 fleet order guide rpo codes, p.1 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide rpo codes, p.1 · 2026 cadillac ct4 fleet order guide rpo codes, p.1 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide rpo codes, p.1 confirmed
    S08 LPO, highway safety kit 2025–2026 ⛭ GM factory document — 2025 cadillac ct4 fleet order guide rpo codes, p.1 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide rpo codes, p.1 · 2026 cadillac ct4 fleet order guide rpo codes, p.1 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide rpo codes, p.1 confirmed
    SCY LPO, Tail lamps, clear 2025–2026 only in: CT4 ⛭ GM factory document — 2025 cadillac ct4 fleet order guide rpo codes, p.1 · 2026 cadillac ct4 fleet order guide rpo codes, p.1 confirmed
    SFZ LPO, Monochrome Cadillac emblems 2025–2026 only in: CT4 ⛭ GM factory document — 2025 cadillac ct4 fleet order guide rpo codes, p.1 · 2026 cadillac ct4 fleet order guide rpo codes, p.1 confirmed
    SGV LPO, 19 inch (48.3 cm) alloy wheels, Polished/Dark Android Gloss finish 2025–2026 ⛭ GM factory document — 2025 cadillac ct4 fleet order guide rpo codes, p.1 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide rpo codes, p.1 · 2026 cadillac ct4 fleet order guide rpo codes, p.1 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide rpo codes, p.1 confirmed
    SKO LPO, Seatback organizer 2025–2026 ⛭ GM factory document — 2025 cadillac ct4 fleet order guide rpo codes, p.1 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide rpo codes, p.1 · 2026 cadillac ct4 fleet order guide rpo codes, p.1 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide rpo codes, p.1 confirmed
    SOU LPO, 19 inch (48.3 cm) alloy wheels, Gloss Black finish 2025–2026 ⛭ GM factory document — 2025 cadillac ct4 fleet order guide rpo codes, p.1 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide rpo codes, p.1 · 2026 cadillac ct4 fleet order guide rpo codes, p.1 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide rpo codes, p.1 confirmed
    SOX LPO, 19 inch (48.3 cm) alloy wheels, Low Gloss Black with Bronze accents 2025–2026 ⛭ GM factory document — 2025 cadillac ct4 fleet order guide rpo codes, p.1 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide rpo codes, p.1 · 2026 cadillac ct4 fleet order guide rpo codes, p.1 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide rpo codes, p.1 confirmed
    SOY LPO, 19 inch (48.3 cm) alloy wheels, Low Gloss Black with Red accents 2025–2026 ⛭ GM factory document — 2025 cadillac ct4 fleet order guide rpo codes, p.1 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide rpo codes, p.1 · 2026 cadillac ct4 fleet order guide rpo codes, p.1 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide rpo codes, p.1 confirmed
    SPQ LPO, 19 inch (48.3 cm) alloy wheels, Low Gloss Black 2025–2026 ⛭ GM factory document — 2025 cadillac ct4 fleet order guide rpo codes, p.1 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide rpo codes, p.1 · 2026 cadillac ct4 fleet order guide rpo codes, p.1 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide rpo codes, p.1 confirmed
    SPY LPO, Wheel lug nuts, Black 2025–2026 ⛭ GM factory document — 2025 cadillac ct4 fleet order guide rpo codes, p.1 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide rpo codes, p.1 · 2026 cadillac ct4 fleet order guide rpo codes, p.1 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide rpo codes, p.1 confirmed
    SPZ LPO, Wheel locks, Black 2025–2026 ⛭ GM factory document — 2025 cadillac ct4 fleet order guide rpo codes, p.1 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide rpo codes, p.1 · 2026 cadillac ct4 fleet order guide rpo codes, p.1 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide rpo codes, p.1 confirmed
    SQU LPO, Wheel locks, Chrome 2025–2026 ⛭ GM factory document — 2025 cadillac ct4 fleet order guide rpo codes, p.1 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide rpo codes, p.1 · 2026 cadillac ct4 fleet order guide rpo codes, p.1 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide rpo codes, p.1 confirmed
    T4L Headlamps, LED 2025–2026 all trims: S ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.4 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.5 · 2026 cadillac ct4 fleet order guide, p.5 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.5 confirmed
    T87 LED lamps, front cornering 2025–2026 V-Series Blackwing: S; Premium Luxury, Sport, V-Series: O ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.26 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.5 · 2026 cadillac ct4 fleet order guide, p.23 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.5 confirmed
    T8Z Buckle to Drive 2025–2026 Luxury, Premium Luxury, Sport, V-Series: S; V-Series Blackwing: O ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.2 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.2 · 2026 cadillac ct4 fleet order guide, p.2 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.2 confirmed
    TDM Teen Driver 2025–2026 all trims: S ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.5 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.5 · 2026 cadillac ct4 fleet order guide, p.5 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.5 confirmed
    TQ5 IntelliBeam 2025–2026 all trims: S ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.5 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.5 · 2026 cadillac ct4 fleet order guide, p.5 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.5 confirmed
    TSQ Lighting, interior 2025–2026 Premium Luxury, Sport, V-Series, V-Series Blackwing: S ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.2 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.3 · 2026 cadillac ct4 fleet order guide, p.3 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.3 confirmed
    TTW Headlamp control, automatic on/off 2025–2026 Premium Luxury, Sport, V-Series, V-Series Blackwing: S ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.4 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.5 · 2026 cadillac ct4 fleet order guide, p.5 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.5 confirmed
    U2K SiriusXM with 360L 2025–2026 all trims: S ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.1 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.2 · 2026 cadillac ct4 fleet order guide, p.2 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.2 confirmed
    U2L Radio, HD 2025–2026 all trims: S ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.1 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.2 · 2026 cadillac ct4 fleet order guide, p.2 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.2 confirmed
    U80 Digital compass 2025–2026 all trims: S ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.2 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.2 · 2026 cadillac ct4 fleet order guide, p.2 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.2 confirmed
    UC3 Steering wheel controls, audio, phone and cruise control 2025–2026 all trims: S ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.4 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.5 · 2026 cadillac ct4 fleet order guide, p.5 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.5 confirmed
    UD5 Park assist, front and rear 2025–2026 Premium Luxury, Sport, V-Series, V-Series Blackwing: S ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.5 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.5 · 2026 cadillac ct4 fleet order guide, p.6 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.6 confirmed
    UD7 Park assist, rear 2025–2026 only in: CT4; Luxury: S ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.5 · 2026 cadillac ct4 fleet order guide, p.6 confirmed
    UDD Gauge cluster 2025–2026 Luxury, Premium Luxury, Sport, V-Series: S ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.2 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.9 · 2026 cadillac ct4 fleet order guide, p.2 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.3 confirmed
    UDV Gauge cluster, 12 inch diagonal 2025–2026 V-Series Blackwing: S; Premium Luxury, Sport, V-Series: O ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.20 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.2 · 2026 cadillac ct4 fleet order guide, p.18 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.3 confirmed
    UE1 OnStar services capable 2025–2026 all trims: S ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.3 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.3 · 2026 cadillac ct4 fleet order guide, p.3 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.3 confirmed
    UE4 Following Distance Indicator 2025–2026 all trims: S ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.2 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.2 · 2026 cadillac ct4 fleet order guide, p.2 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.2 confirmed
    UEU Forward Collision Alert 2025–2026 all trims: S ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.2 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.2 · 2026 cadillac ct4 fleet order guide, p.2 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.2 confirmed
    UFG Rear Cross Traffic Alert 2025–2026 all trims: S ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.3 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.3 · 2026 cadillac ct4 fleet order guide, p.4 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.4 confirmed
    UG1 Universal Home Remote 2025–2026 Premium Luxury, Sport, V-Series, V-Series Blackwing: S ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.5 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.5 · 2026 cadillac ct4 fleet order guide, p.5 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.6 confirmed
    UGC Turn signals, front LED lamps 2025–2026 V-Series Blackwing: S; Premium Luxury, Sport, V-Series: O ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.30 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.6 · 2026 cadillac ct4 fleet order guide, p.27 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.7 confirmed
    UGE Tail lamps, LED 2025–2026 all trims: S ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.6 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.6 · 2026 cadillac ct4 fleet order guide, p.6 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.6 confirmed
    UGN Enhanced Automatic Emergency Braking 2025–2026 Premium Luxury, Sport, V-Series: S; V-Series Blackwing: O ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.6 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.6 · 2026 cadillac ct4 fleet order guide, p.7 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.7 confirmed
    UHX Lane Keep Assist with Lane Departure Warning 2025–2026 all trims: S ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.2 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.3 · 2026 cadillac ct4 fleet order guide, p.3 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.3 confirmed
    UHY Automatic Emergency Braking 2025–2026 Luxury, V-Series Blackwing: S ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.6 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.9 · 2026 cadillac ct4 fleet order guide, p.7 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.7 confirmed
    UJN Tire Pressure Monitoring System 2025–2026 all trims: S ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.5 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.5 · 2026 cadillac ct4 fleet order guide, p.5 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.6 confirmed
    UKC Lane Change Alert with Side Blind Zone Alert 2025–2026 all trims: S ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.2 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.3 · 2026 cadillac ct4 fleet order guide, p.3 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.3 confirmed
    UKJ Front Pedestrian Braking 2025–2026 all trims: S ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.6 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.6 · 2026 cadillac ct4 fleet order guide, p.7 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.7 confirmed
    UKL Super Cruise 2025–2026 Premium Luxury, Sport, V-Series: O ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.17 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.17 · 2026 cadillac ct4 fleet order guide, p.15 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.17 confirmed
    UQG Audio system, premium, 8 speaker 2025–2026 only in: CT4; all trims: S ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.8 · 2026 cadillac ct4 fleet order guide, p.1 confirmed
    UQS Audio system, premium Surround Sound 2025–2026 V-Series, V-Series Blackwing: S; Luxury, Premium Luxury, Sport: O; CT4 lists name the Bose 14 speaker system; the CT4-V lists print only "Audio system feature" (2026: "Premium Surround Sound 15-speaker system"), with Bose 14 speaker on V-Series and AKG 15 speaker on V-Series Blackwing ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.18 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.1 · 2026 cadillac ct4 fleet order guide, p.16 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.1 confirmed
    UQT Performance data and video recorder 2025–2026 only in: CT4-V and CT4-V Blackwing; all trims: O ⛭ GM factory document — 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.13 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.12 confirmed
    UV2 HD Surround Vision 2025–2026 Premium Luxury, Sport, V-Series: O ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.20 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.20 · 2026 cadillac ct4 fleet order guide, p.18 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.19 confirmed
    UV6 Head-Up Display 2025–2026 Premium Luxury, Sport, V-Series, V-Series Blackwing: O ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.20 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.20 · 2026 cadillac ct4 fleet order guide, p.18 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.20 confirmed
    UVB HD Rear Vision Camera 2025–2026 all trims: S ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.2 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.2 · 2026 cadillac ct4 fleet order guide, p.3 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.3 confirmed
    UVZ Reverse Automatic Braking 2025–2026 Premium Luxury, Sport, V-Series: S; V-Series Blackwing: O ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.6 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.6 · 2026 cadillac ct4 fleet order guide, p.7 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.8 confirmed
    V76 Tow hook 2025–2026 all trims: S ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.6 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.6 · 2026 cadillac ct4 fleet order guide, p.6 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.7 confirmed
    VAS LPO, Grille, Bright 2025–2026 only in: CT4 ⛭ GM factory document — 2025 cadillac ct4 fleet order guide rpo codes, p.1 · 2026 cadillac ct4 fleet order guide rpo codes, p.1 confirmed
    VAV LPO, All-weather floor mats 2025–2026 ⛭ GM factory document — 2025 cadillac ct4 fleet order guide rpo codes, p.1 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide rpo codes, p.1 · 2026 cadillac ct4 fleet order guide rpo codes, p.1 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide rpo codes, p.1 confirmed
    VK3 License plate bracket, front 2025–2026 all trims: O ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.11 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.13 · 2026 cadillac ct4 fleet order guide, p.10 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.13 confirmed
    VLI LPO, All-weather cargo mat 2025–2026 ⛭ GM factory document — 2025 cadillac ct4 fleet order guide rpo codes, p.1 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide rpo codes, p.1 · 2026 cadillac ct4 fleet order guide rpo codes, p.1 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide rpo codes, p.1 confirmed
    VS2 Splitter, front, carbon fiber 2025–2026 only in: CT4-V and CT4-V Blackwing; V-Series Blackwing: O ⛭ GM factory document — 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.26 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.25 confirmed
    VV4 Wi-Fi hotspot capable 2025–2026 all trims: S ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.3 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.3 · 2026 cadillac ct4 fleet order guide, p.3 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.4 confirmed
    VYW LPO, Floor mats, premium carpeted 2025–2026 ⛭ GM factory document — 2025 cadillac ct4 fleet order guide rpo codes, p.1 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide rpo codes, p.1 · 2026 cadillac ct4 fleet order guide rpo codes, p.1 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide rpo codes, p.1 confirmed
    W2D LPO, Cargo net 2025–2026 ⛭ GM factory document — 2025 cadillac ct4 fleet order guide rpo codes, p.1 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide rpo codes, p.1 · 2026 cadillac ct4 fleet order guide rpo codes, p.1 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide rpo codes, p.1 confirmed
    XLC Launch Control 2025–2026 only in: CT4-V and CT4-V Blackwing; V-Series Blackwing: S ⛭ GM factory document — 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.7 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.8 confirmed
    XVR Surround Vision Recorder 2025–2026 Premium Luxury, Sport, V-Series: O ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.24 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.24 · 2026 cadillac ct4 fleet order guide, p.22 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.24 confirmed

    Paint

    Code Description Years Models/Notes Confidence
    G1W Crystal White Tricoat 2020, 2025 CT4 only; extra cost; not offered on V-Series in 2020; 2020 from GM Authority's 2020 CT4 exterior colors page ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.34 confirmed
    G4J Vibrant White Tricoat 2026 CT4 only; extra cost; new in the 2026 guide ⛭ GM factory document — 2026 cadillac ct4 fleet order guide, p.31 confirmed
    G7C Velocity Red 2020 extra cost; only on Sport and V-Series; 2020 from GM Authority's 2020 CT4 exterior colors page single-source
    G7E Red Obsession Tintcoat 2020 extra cost; 2020 from GM Authority's 2020 CT4 exterior colors page single-source
    G9K Satin Steel Metallic 2020 extra cost; 2020 from GM Authority's 2020 CT4 exterior colors page single-source
    GAE Drift Metallic 2025–2026 CT4-V only; extra cost; new in the 2025 guide ⛭ GM factory document — 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.36 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.33 confirmed
    GAI Deep Space Metallic 2025–2026 extra cost; the 2025 guides mark it new with late availability ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.34 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.36 · 2026 cadillac ct4 fleet order guide, p.31 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.33 confirmed
    GAZ Summit White 2020, 2025–2026 no extra cost; all trims; 2020 from GM Authority's 2020 CT4 exterior colors page ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.34 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.36 · 2026 cadillac ct4 fleet order guide, p.31 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.33 confirmed
    GBA Black Raven 2020, 2025–2026 no extra cost; all trims; 2020 from GM Authority's 2020 CT4 exterior colors page ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.34 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.36 · 2026 cadillac ct4 fleet order guide, p.31 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.33 confirmed
    GBL Magnus Metal Frost 2025 CT4-V only; included with and only available with the Petit Pataud Special Edition (ZLZ); limited availability; new in the 2025 guide ⛭ GM factory document — 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.36 confirmed
    GBW Typhoon Metallic 2025–2026 extra cost; the 2025 guides mark it new with late availability ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.34 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.36 · 2026 cadillac ct4 fleet order guide, p.31 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.33 confirmed
    GCP Cyber Yellow Metallic 2025–2026 extra cost; the 2026 guides mark it no longer available to order; the 2026 CT4 guide offers it on Sport only and marks it new ⛭ GM factory document — 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.36 · 2026 cadillac ct4 fleet order guide, p.31 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.33 confirmed
    GJ0 Evergreen Metallic 2020 extra cost; 2020 from GM Authority's 2020 CT4 exterior colors page single-source
    GJI Shadow Metallic 2020 extra cost; 2020 from GM Authority's 2020 CT4 exterior colors page single-source
    GJV Coastal Blue Metallic 2025–2026 extra cost; new in the 2026 CT4 guide ⛭ GM factory document — 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.36 · 2026 cadillac ct4 fleet order guide, p.31 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.33 confirmed
    GKK Wave Metallic 2020, 2025 CT4 only; extra cost; 2020 from GM Authority's 2020 CT4 exterior colors page ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.34 confirmed
    GLL Royal Spice Metallic 2020 extra cost; only on Sport and V-Series; 2020 from GM Authority's 2020 CT4 exterior colors page single-source
    GLR Garnet Metallic 2020 extra cost; only on Luxury and Premium Luxury; 2020 from GM Authority's 2020 CT4 exterior colors page single-source
    GLU Dark Moon Metallic 2020 extra cost; only on Luxury and Premium Luxury; 2020 from GM Authority's 2020 CT4 exterior colors page single-source
    GNT Radiant Red Tintcoat 2025–2026 extra cost; all trims ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.34 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.36 · 2026 cadillac ct4 fleet order guide, p.31 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.33 confirmed
    GXD Argent Silver Metallic 2025–2026 extra cost; all trims ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.34 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.36 · 2026 cadillac ct4 fleet order guide, p.31 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.33 confirmed
    GXF Midnight Sky Metallic 2025–2026 CT4 only; extra cost ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.34 · 2026 cadillac ct4 fleet order guide, p.31 confirmed

    Interior Trim

    Code Description Years Models/Notes Confidence
    E54 Interior, Jet Black with Phantom Blue accents, leather seating surfaces with mini-perforated custom quilted inserts and sueded front seatbacks 2025 V-Series Blackwing; included with and only available with the Petit Pataud Special Edition (ZLZ); limited availability; seat code AQJ ⛭ GM factory document — 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.35 confirmed
    EG1 Interior, Sky Cool Gray with Santorini Blue accents, leather seating surfaces with mini-perforated custom quilted inserts and sueded front seatbacks 2025 V-Series Blackwing; included with and only available with the Petit Pataud Special Edition (ZLZ); limited availability; seat code AQJ ⛭ GM factory document — 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.35 confirmed
    H0L Interior, Sangria with Jet Black accents, leather seating surfaces with mini-perforated inserts 2020, 2025–2026 CT4 Sport (Pendulum finish aluminum center console trim, requires Climate Package Y6F in the 2025 guide) and CT4-V V-Series (Twenty-Two Carbon Fiber center console trim); seat code AQ9; 2020 from GM Authority's 2020 CT4 interior colors page ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.34 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.35 · 2026 cadillac ct4 fleet order guide, p.31 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.33 confirmed
    H0M Interior, Cinnamon with Jet Black accents, leather seating surfaces with mini-perforated inserts 2020, 2025 CT4 Premium Luxury; Synergy finish aluminum center console trim; requires the Climate Package (Y6F); seat code AQ9; 2020 from GM Authority's 2020 CT4 interior colors page ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.34 confirmed
    H1Y Interior, Jet Black with Jet Black accents, leather seating surfaces with mini-perforated inserts 2020, 2025–2026 CT4 Premium Luxury; Synergy finish aluminum center console trim; the 2025 guide requires the Climate Package (Y6F); seat code AQ9; 2020 from GM Authority's 2020 CT4 interior colors page ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.34 · 2026 cadillac ct4 fleet order guide, p.31 confirmed
    H2G Interior, Jet Black with Jet Black accents, Inteluxe seats 2020, 2025–2026 CT4 Luxury; Pitch Dark Night center console trim; seat code AQ9; 2020 from GM Authority's 2020 CT4 interior colors page ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.34 · 2026 cadillac ct4 fleet order guide, p.31 confirmed
    H2X Interior, Jet Black with Jet Black accents, leather seating surfaces with mini-perforated inserts 2020, 2025–2026 CT4 Sport (Pendulum finish aluminum center console trim, requires Climate Package Y6F in the 2025 guide) and CT4-V V-Series (Twenty-Two Carbon Fiber center console trim); seat code AQ9; 2020 from GM Authority's 2020 CT4 interior colors page ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.34 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.35 · 2026 cadillac ct4 fleet order guide, p.31 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.33 confirmed
    HBE Interior, Jet Black with Jet Black accents, leather/performance cloth/sueded microfiber/Inteluxe seats with sueded front seatbacks 2025–2026 V-Series and V-Series Blackwing; Twenty-Two Carbon Fiber center console trim; seat code AQJ; includes the high performance steering wheel (BTH); on V-Series the 2025 guide requires the Cold Weather Package (Y19) ⛭ GM factory document — 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.35 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.33 confirmed
    HBF Interior, Natural Tan with Jet Black accents, leather seating surfaces with mini-perforated custom quilted inserts and sueded front seatbacks 2025–2026 V-Series Blackwing; Twenty-Two Carbon Fiber center console trim; seat code AQJ; requires the Climate Package (Y6F); includes Natural Tan seat belts (71B), BTH and IWE ⛭ GM factory document — 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.35 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.33 confirmed
    HEA Interior, Jet Black with Jet Black accents, leather seating surfaces with mini-perforated custom quilted inserts and sueded front seatbacks 2025–2026 V-Series Blackwing; Twenty-Two Carbon Fiber center console trim; seat code AQJ; requires the Climate Package (Y6F); includes the high performance steering wheel (BTH) and the sueded microfiber wrapped interior trim package (IWE) ⛭ GM factory document — 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.35 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.33 confirmed
    HEB Interior, Sky Cool Gray with Jet Black accents, leather seating surfaces with mini-perforated custom quilted inserts and sueded front seatbacks 2025–2026 V-Series Blackwing; Twenty-Two Carbon Fiber center console trim; seat code AQJ; requires the Climate Package (Y6F); includes BTH and IWE ⛭ GM factory document — 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.35 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.33 confirmed
    HMC Interior, Whisper Beige with Jet Black accents, Inteluxe seats 2020, 2025–2026 CT4 Luxury; Pitch Dark Night center console trim; seat code AQ9; 2020 from GM Authority's 2020 CT4 interior colors page ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.34 · 2026 cadillac ct4 fleet order guide, p.31 confirmed
    HNC Interior, Whisper Beige with Jet Black accents, leather seating surfaces with mini-perforated inserts 2020, 2025–2026 CT4 Premium Luxury; Synergy finish aluminum center console trim; the 2025 guide requires the Climate Package (Y6F); seat code AQ9; 2020 from GM Authority's 2020 CT4 interior colors page ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.34 · 2026 cadillac ct4 fleet order guide, p.31 confirmed
    HXR Interior, Jet Black with Jet Black accents, Inteluxe seats 2020, 2025 CT4 Sport with Pendulum finish aluminum center console trim; CT4-V V-Series with Twenty-Two Carbon Fiber center console trim; seat code AQ9; 2020 from GM Authority's 2020 CT4 interior colors page ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.34 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.35 confirmed
    HZQ Interior, Jet Black with Jet Black accents, Inteluxe seats 2025–2026 V-Series Blackwing; Twenty-Two Carbon Fiber center console trim; seat code AQ9 ⛭ GM factory document — 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.35 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.33 confirmed
    IWE Interior trim package, sueded microfiber wrapped 2025–2026 only in: CT4-V and CT4-V Blackwing; all trims: O ⛭ GM factory document — 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.13 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.13 confirmed

    Internal / Process

    Code Description Years Models/Notes Confidence
    FE9 Emissions, federal requirements 2025–2026 internal code all trims: O ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.15 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.15 · 2026 cadillac ct4 fleet order guide, p.13 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.15 confirmed
    NB8 Emissions override, California 2025–2026 internal code all trims: O ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.15 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.16 · 2026 cadillac ct4 fleet order guide, p.14 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.15 confirmed
    NB9 Emissions override, state-specific 2025–2026 internal code all trims: O ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.15 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.16 · 2026 cadillac ct4 fleet order guide, p.14 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.15 confirmed
    NC7 Emissions override, federal 2025–2026 internal code all trims: O ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.15 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.16 · 2026 cadillac ct4 fleet order guide, p.14 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.15 confirmed
    NE1 Emissions, Colorado, Connecticut, Delaware, Maine, Maryland, Massachusetts, Minnesota, Nevada, New Jersey, New York, Oregon, Pennsylvania, Rhode Island, Vermont, Virginia and Washington state requirements 2025–2026 internal code all trims: O; the 2026 lists print only "Emissions" ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.15 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.16 · 2026 cadillac ct4 fleet order guide, p.14 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.15 confirmed
    VGC Vehicle wrap 2025–2026 internal code only in: CT4-V and CT4-V Blackwing; V-Series Blackwing: S ⛭ GM factory document — 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.6 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.7 confirmed
    XES Shipping carrier, enclosed 2025–2026 internal code only in: CT4-V and CT4-V Blackwing; V-Series Blackwing: O ⛭ GM factory document — 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.13 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.12 confirmed
    YF5 Emissions, California state requirements 2025–2026 internal code all trims: O ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.15 · 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.16 · 2026 cadillac ct4 fleet order guide, p.14 · 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.15 confirmed

    Sources

    Factory documents (T1)

    Other sources