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

    Buick · 2018-2020

    Regal — E2XX (2018–2020)

    regal · regal sportback · regal tourx · regal 1sv · regal preferred · regal preferred ii · regal essence · regal gs

    232 option rows 232 RPO codes 2 model years
    100% Factory-verified
    • ✓ Factory-verified · 231
    • ● Confirmed · 1
    • ◑ Single-source · 0
    • ⚠ Disputed · 0

    Applicable options

    Documented RPO codes

    Have a VIN? Decode it at DecodeThis
    Model year
    Code Option Years Notes & factory source Confidence
    Engines
    KL9 Engine control, stop-start system 2018–2019
    2019: all trims: S (2019 Sportback order guide)
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1, p.5.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.7.
    		Factory-verified
    LGX Engine, 3.6L V6, direct injection, DOHC, variable valve timing, aluminum 2018–2019
    only in: Sportback; 2019: GS: S (2019 Sportback order guide); new for 2018; the 2019 guide gives 310 hp and 282 lb-ft
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1, p.5.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.7.
    		Factory-verified
    LTG Engine, 2.0L turbo, DOHC, 4-cylinder, SIDI, variable valve timing (VVT) 2018–2019
    2019: Regal, Preferred, Preferred II, Essence, Avenir: S (2019 Sportback order guide); the 2018 Sportback guide gives 250 hp and 260 lb-ft (295 lb-ft with AWD)
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1, p.5.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.7.
    		Factory-verified
    Transmissions
    M3D Transmission, 9 speed automatic 2018–2019
    only in: Sportback; 2019: Regal, Preferred, Preferred II, Essence, Avenir: S (2019 Sportback order guide)
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1, p.5.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.8.
    		Factory-verified
    M3T Transmission, 9 speed automatic 2018–2019
    only in: Sportback; 2019: GS: S (2019 Sportback order guide); new for 2018; same wording as M3D
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1, p.5.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.8.
    		Factory-verified
    MRC Transmission, 8 speed automatic 2018–2019
    2019: Preferred II, Essence: S (2019 Sportback order guide)
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1, p.5.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.8.
    		Factory-verified
    Axles
    D95 Axle, 3.08 final drive ratio 2018–2019
    2019: Preferred II, Essence: S (2019 Sportback order guide)
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1, p.5.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.7.
    		Factory-verified
    F46 Drivetrain, intelligent all-wheel drive with active twin clutch 2018–2019
    2019: Preferred II, Essence, GS: S (2019 Sportback order guide); the TourX list prints Drivetrain only
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1, p.5.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.7.
    		Factory-verified
    FXK Axle, 2.89 final drive ratio 2018–2019
    only in: Sportback; 2019: all trims: S (2019 Sportback order guide)
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1, p.5.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.7.
    		Factory-verified
    G99 Axle, rear, electronic, twin clutch 2018–2019
    2019: Preferred II, Essence, GS: S (2019 Sportback order guide)
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1, p.5.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.7.
    		Factory-verified
    Packages & Trims
    1SB Equipment group 1SB, Preferred 2018–2019
    Sportback model 4ZW68 FWD; TourX model 4ZW35 AWD
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.2.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.2.
    GM factory document — 2019 buick regal sportback fleet order guide wayback, p.1.
    		Factory-verified
    1SC Equipment group 1SC, Preferred II 2018–2019
    only in: Sportback; models 4ZX68 FWD and 4ZG68 AWD; the 2019 page says the FWD (4ZX68) and AWD (printed 42G68) 1SC are no longer orderable as of 1-28-19
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.2.
    GM factory document — 2019 buick regal sportback fleet order guide wayback, p.1.
    		Factory-verified
    1SL Equipment group 1SL, Essence 2018–2019
    Sportback models 4ZY68 FWD and 4ZH68 AWD; TourX model 4ZY35 AWD
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.2.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.2.
    GM factory document — 2019 buick regal sportback fleet order guide wayback, p.1.
    		Factory-verified
    1SU Equipment group 1SU, Avenir 2019
    only in: Sportback; model 4ZY68 FWD
    GM factory document — 2019 buick regal sportback fleet order guide wayback, p.1.
    		Factory-verified
    1SV Equipment group 1SV, Regal 2018–2019
    Sportback model 4ZU68 FWD; TourX model 4ZU35 AWD
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.2.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.2.
    GM factory document — 2019 buick regal sportback fleet order guide wayback, p.1.
    		Factory-verified
    1SX Equipment group 1SX, GS 2018–2019
    only in: Sportback; model 4ZZ68 AWD
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.2.
    GM factory document — 2019 buick regal sportback fleet order guide wayback, p.1.
    		Factory-verified
    A44 Memory package 2018–2019
    only in: Sportback; 2019: GS: S (2019 Sportback order guide); same GM wording as A45; the 2019 guide adds a front passenger 8-way seat preset
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.3.
    		Factory-verified
    A45 Memory package 2018–2019
    2019: Avenir: S; Essence: O (2019 Sportback order guide)
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.9.
    		Factory-verified
    B26 Driver Confidence package #1 2018–2019
    2019: Preferred, Preferred II, Essence: O; Avenir: S; the package contents differ by trim (2019 Sportback order guide); the 2019 guide calls it Driver Confidence Package I
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.1.
    		Factory-verified
    BAQ Appearance package 2018–2019
    only in: Sportback; 2019: GS: O (2019 Sportback order guide)
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.13.
    		Factory-verified
    BGP Driver Confidence package #2 2018–2019
    2019: Essence, Avenir: O; GS: O, and the GS version adds head-up display (2019 Sportback order guide); the 2019 guide calls it Driver Confidence Package II and requires B26
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.13.
    		Factory-verified
    PDE LPO, Winter/Summer Floor Mat Package 2019
    2019: Preferred, Preferred II, Essence, Avenir: O (2019 Sportback order guide)
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.14.
    		Factory-verified
    PDG LPO, Summer/Winter Package 2019
    2019: Preferred, Preferred II, Essence, Avenir, GS: O (2019 Sportback order guide)
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.14.
    		Factory-verified
    PDH LPO, Buick Interior Protection Package 2018–2019
    2019: Preferred, Preferred II, Essence, Avenir, GS: O (2019 Sportback order guide)
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.13.
    		Factory-verified
    WPY Sights and Sounds package 2018–2019
    2019: Preferred, Preferred II, Essence, GS: O; Avenir: S (2019 Sportback order guide)
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.9.
    		Factory-verified
    Equipment
    5A7 Wheel, spare, none 2018–2019
    2019: Regal, Avenir, GS: S; Preferred, Preferred II, Essence: O (2019 Sportback order guide)
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.6.
    		Factory-verified
    9L3 Tire, spare, none 2018–2019
    2019: Regal, Avenir, GS: S; Preferred, Preferred II, Essence: O (2019 Sportback order guide)
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.6.
    		Factory-verified
    A51 Seats, front bucket 2018–2019
    2019: Regal, Preferred, Preferred II, Essence, Avenir: S (2019 Sportback order guide)
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.4.
    		Factory-verified
    A64 Seat, rear 60/40 split-folding 2018–2019
    2019: Regal, Preferred: S (2019 Sportback order guide)
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.4.
    		Factory-verified
    A69 Safety belts, 3-point, rear, all seating positions 2018–2019
    2019: all trims: S (2019 Sportback order guide); the 2019 guide reads seat belts
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.4.
    		Factory-verified
    A70 Safety belts, 3-point, driver and front passenger 2018–2019
    2019: all trims: S (2019 Sportback order guide); the 2019 guide reads seat belts
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.4.
    		Factory-verified
    AE2 Trunk emergency release handle 2018–2019
    only in: Sportback; 2019: all trims: S (2019 Sportback order guide)
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.5.
    		Factory-verified
    AE8 Seat adjuster, driver 8-way power 2018–2019
    2019: Preferred, Preferred II, Essence, Avenir, GS: S (2019 Sportback order guide)
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.4.
    		Factory-verified
    AEF Window, power 2018–2019
    2019: all trims: S (2019 Sportback order guide); the 2019 guide adds front passenger express up and down
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.5.
    		Factory-verified
    AEQ Windows, power 2018–2019
    2019: all trims: S (2019 Sportback order guide); the 2019 guide reads rear, with express-down
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.5.
    		Factory-verified
    AF6 Seat, driver massage control 2018–2019
    only in: Sportback; 2019: GS: S (2019 Sportback order guide)
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.4.
    		Factory-verified
    AG5 Seat adjuster, front passenger 4-way manual, including recline 2018–2019
    2019: Regal: S (2019 Sportback order guide); the 2018 list reads 2-way manual, and the 2019 guide counts recline as extra ways
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.4.
    		Factory-verified
    AG6 Seat adjuster, front passenger 6-way manual, including recline 2018–2019
    2019: Preferred, Preferred II: S (2019 Sportback order guide); the 2018 list reads 4-way manual, and the 2019 guide counts recline as extra ways
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.4.
    		Factory-verified
    AH3 Seat adjuster, driver 6-way manual 2018–2019
    2019: Regal: S (2019 Sportback order guide)
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.4.
    		Factory-verified
    AH8 Seat adjuster, passenger 8-way power 2018–2019
    2019: Essence, Avenir, GS: S (2019 Sportback order guide)
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.4.
    		Factory-verified
    AHC Seat, driver manual cushion extension 2018–2019
    only in: Sportback; 2019: GS: S (2019 Sportback order guide); the 2019 guide reads thigh cushion extension
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.5.
    		Factory-verified
    AHE Seat adjuster, driver power bolster 2018–2019
    only in: Sportback; 2019: GS: S (2019 Sportback order guide); the 2019 guide reads seat, driver power bolsters
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.5.
    		Factory-verified
    AHF Seat, front passenger manual cushion extension 2018–2019
    only in: Sportback; 2019: GS: S (2019 Sportback order guide); the 2019 guide reads thigh cushion extension
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.5.
    		Factory-verified
    AHH Seat, front passenger power bolster 2018–2019
    only in: Sportback; 2019: GS: S (2019 Sportback order guide); the 2019 guide reads bolsters
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.5.
    		Factory-verified
    AJC Head restraints, 2-way adjustable 2018–2019
    2019: Regal, Preferred, Preferred II, Essence, Avenir: S (2019 Sportback order guide)
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.3.
    		Factory-verified
    AJW Glass, laminated 2018–2019
    2019: all trims: S (2019 Sportback order guide); the 2019 guide adds acoustic front side glass
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.5.
    		Factory-verified
    AKE Seat, front passenger massage control 2018–2019
    only in: Sportback; 2019: GS: S (2019 Sportback order guide)
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.5.
    		Factory-verified
    AKP Glass, solar absorbing 2018–2019
    2019: all trims: S (2019 Sportback order guide)
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.5.
    		Factory-verified
    AKX Windshield, solar absorbing 2018–2019
    2019: all trims: S (2019 Sportback order guide)
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.5.
    		Factory-verified
    AL0 Air bag, passenger sensing system 2018–2019
    2019: all trims: S (2019 Sportback order guide)
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.1.
    		Factory-verified
    AL9 Seat adjuster, driver 2-way power lumbar control 2018–2019
    2019: Preferred, Preferred II, Essence: S (2019 Sportback order guide)
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.4.
    		Factory-verified
    ANY Cargo management, rear storage area 2018
    only in: TourX
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    		Factory-verified
    AQJ Seats, front bucket 2018–2019
    only in: Sportback; 2019: GS: S (2019 Sportback order guide); the 2019 guide reads high performance
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.4.
    		Factory-verified
    ARJ Seats, 40/20/40 rear fold flat, tri-folding 2018–2019
    2019: Preferred II, Essence, Avenir, GS: S (2019 Sportback order guide)
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.4.
    		Factory-verified
    ASV Sensor, humidity 2018–2019
    2019: all trims: S (2019 Sportback order guide)
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.5.
    		Factory-verified
    AT9 Seat adjuster, front passenger 2-way power lumbar 2018–2019
    2019: Essence: S (2019 Sportback order guide)
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.4.
    		Factory-verified
    ATH Keyless open 2018–2019
    2019: all trims: S (2019 Sportback order guide)
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.3.
    		Factory-verified
    AVK Seat adjuster, driver 4-way power lumbar 2018–2019
    2019: Avenir, GS: S; Essence: O (2019 Sportback order guide)
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.4.
    		Factory-verified
    AVU Seat adjuster, front passenger 4-way power 2018–2019
    2019: Avenir, GS: S; Essence: O (2019 Sportback order guide); the 2019 guide reads 4-way power lumbar
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.4.
    		Factory-verified
    AXG Window, power 2018–2019
    2019: all trims: S (2019 Sportback order guide); the 2019 guide adds driver express up and down
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.5.
    		Factory-verified
    AYF Air bags, frontal, driver and right-front passenger 2018–2019
    2019: all trims: S (2019 Sportback order guide)
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.1.
    		Factory-verified
    B34 Floor mats, carpeted front 2018–2019
    2019: all trims: S (2019 Sportback order guide)
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.3.
    		Factory-verified
    B35 Floor mats, carpeted rear 2018–2019
    2019: all trims: S (2019 Sportback order guide)
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.3.
    		Factory-verified
    BII Sill plates, GS specific 2018–2019
    only in: Sportback; 2019: GS: S (2019 Sportback order guide)
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.6.
    		Factory-verified
    BTM Keyless start 2018–2019
    2019: all trims: S (2019 Sportback order guide)
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.3.
    		Factory-verified
    BTT Remote panic alarm 2018–2019
    2019: all trims: S (2019 Sportback order guide)
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.4.
    		Factory-verified
    BTV Remote vehicle starter system 2018–2019
    2019: Preferred II, Essence, Avenir, GS: S; Preferred: O (2019 Sportback order guide)
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.4.
    		Factory-verified
    C25 Wiper, rear intermittent 2018
    only in: TourX
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    		Factory-verified
    C3U Moonroof, power 2018
    only in: TourX
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    		Factory-verified
    C4P Air conditioning, single-zone manual 2018–2019
    2019: Regal, Preferred: S (2019 Sportback order guide)
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.1.
    		Factory-verified
    C59 Air vents, rear 2018–2019
    2019: all trims: S (2019 Sportback order guide)
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.1.
    		Factory-verified
    C93 Lighting, interior 2018–2019
    2019: Preferred II, Essence, Avenir, GS: S (2019 Sportback order guide); the 2019 guide reads ambient
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.3.
    		Factory-verified
    CAV LPO, cargo tray 2018–2019
    2019: Preferred, Preferred II, Essence, Avenir, GS: O (2019 Sportback order guide)
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.14.
    		Factory-verified
    CF5 Moonroof, power 2018–2019
    only in: Sportback; 2019: Preferred, Preferred II, Essence, Avenir, GS: O (2019 Sportback order guide)
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.14.
    		Factory-verified
    CJ2 Air conditioning, dual-zone automatic climate control 2018–2019
    2019: Preferred II, Essence, Avenir, GS: S (2019 Sportback order guide)
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.1.
    		Factory-verified
    CNG Sill plates, Buick 2018–2019
    2019: Preferred, Preferred II, Essence, Avenir: S (2019 Sportback order guide)
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.6.
    		Factory-verified
    D31 Mirror, inside rearview 2018–2019
    2019: Regal: S (2019 Sportback order guide)
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.3.
    		Factory-verified
    DD3 Visors, driver and front passenger illuminated vanity mirrors 2018–2019
    2019: all trims: S (2019 Sportback order guide)
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.5.
    		Factory-verified
    DD8 Mirror, inside rearview auto-dimming 2018–2019
    2019: Preferred, Preferred II, Essence, Avenir, GS: S (2019 Sportback order guide)
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.3.
    		Factory-verified
    DLF Mirrors, outside heated power-adjustable 2018–2019
    2019: Regal, Preferred, Preferred II, Essence: S (2019 Sportback order guide)
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.6.
    		Factory-verified
    DXA Mirrors, outside heated, power-adjustable, driver side auto-dimming 2018–2019
    2019: Avenir, GS: S; Essence: O (2019 Sportback order guide); the TourX list prints autodimming
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.6.
    		Factory-verified
    F45 Chassis, continuously variable real time damping with interactive drive control 2018–2019
    only in: Sportback; 2019: GS: S (2019 Sportback order guide); new for 2018
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1, p.5.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.7.
    		Factory-verified
    FX3 StabiliTrak, stability control system with traction control 2018–2019
    2019: all trims: S (2019 Sportback order guide)
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1, p.5.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.7.
    		Factory-verified
    GNA Suspension, front MacPherson strut 2018–2019
    2019: all trims: S (2019 Sportback order guide)
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1, p.5.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.8.
    		Factory-verified
    GNC Suspension, rear 4-link 2018–2019
    only in: Sportback; 2019: Regal, Preferred, Preferred II, Essence, Avenir: S (2019 Sportback order guide)
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1, p.5.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.8.
    		Factory-verified
    GNQ Suspension, rear 5-link 2018–2019
    2019: Preferred II, Essence, GS: S (2019 Sportback order guide)
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1, p.5.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.8.
    		Factory-verified
    IO5 Audio system, Buick Infotainment System, AM/FM stereo 2018
    letter O in the code as GM prints it; GM prints no zero form
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    		Factory-verified
    IO6 Audio system, Buick Infotainment System with navigation, AM/FM stereo 2018
    letter O in the code as GM prints it; GM prints no zero form
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    		Factory-verified
    IOB Audio system, Buick Infotainment System 2018
    letter O in the code as GM prints it; GM prints no zero form
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    		Factory-verified
    IOR Audio system, 7" diagonal Buick Infotainment System 2018–2019
    only in: Sportback; 2019: Regal, Preferred: S (2019 Sportback order guide); letter O in the code as GM prints it; GM prints no zero form
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.1.
    		Factory-verified
    IOS Audio system, 8" diagonal Buick Infotainment System 2018–2019
    only in: Sportback; 2019: Preferred II, Essence, Avenir, GS: S (2019 Sportback order guide); letter O in the code as GM prints it; GM prints no zero form
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.2.
    		Factory-verified
    IOT Audio system, 8" diagonal Buick Infotainment System with navigation 2018–2019
    only in: Sportback; 2019: Preferred, Preferred II, Essence, Avenir, GS: O (2019 Sportback order guide); letter O in the code as GM prints it; GM prints no zero form
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.19.
    		Factory-verified
    J17 Brakes, 4-wheel antilock, 4-wheel disc, 17" front and 16" rear 2018–2019
    2019: Preferred II, Essence: S (2019 Sportback order guide); the TourX list prints the shorter 4-wheel disc form
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1, p.5.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.7.
    		Factory-verified
    J60 Brakes, 4-wheel antilock, 4-wheel disc, 16" front and rear 2018–2019
    only in: Sportback; 2019: Regal, Preferred, Preferred II, Essence, Avenir: S (2019 Sportback order guide)
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1, p.5.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.7.
    		Factory-verified
    J71 Brake, parking, electronic 2018–2019
    2019: all trims: S (2019 Sportback order guide)
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1, p.5.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.7.
    		Factory-verified
    JF5 Pedals, sport alloy 2018–2019
    only in: Sportback; 2019: GS: S (2019 Sportback order guide)
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.4.
    		Factory-verified
    JJ2 Brake lining, high-performance, noise and dust performance 2018–2019
    2019: all trims: S (2019 Sportback order guide)
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1, p.5.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.7.
    		Factory-verified
    JQ5 Brakes, Brembo, performance, 4-wheel antilock, 4-wheel vented disc 2018–2019
    only in: Sportback; 2019: GS: S (2019 Sportback order guide); new for 2018
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1, p.5.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.7.
    		Factory-verified
    K05 Engine block heater 2018–2019
    2019: Regal, Preferred, Preferred II, Essence, Avenir, GS: O (2019 Sportback order guide)
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1, p.5.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.15.
    		Factory-verified
    K34 Cruise control 2018–2019
    2019: all trims: S (2019 Sportback order guide)
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.2.
    		Factory-verified
    K4C Wireless charging 2018–2019
    2019: Preferred II, Essence: O (with B26); Avenir: S; GS: O (with BAQ) (2019 Sportback order guide)
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.9.
    		Factory-verified
    KA1 Seats, heated driver and front passenger 2018–2019
    2019: Essence, Avenir, GS: S (2019 Sportback order guide)
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.4.
    		Factory-verified
    KEM Air cleaner, ionizing 2019
    2019: Essence, Avenir, GS: S (2019 Sportback order guide); new for 2019
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.1.
    		Factory-verified
    KRH Air filtration system 2018–2019
    2019: all trims: S (2019 Sportback order guide)
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.1.
    		Factory-verified
    KSG Cruise control, adaptive, full-speed range 2018–2019
    2019: Essence, Avenir, GS: O (2019 Sportback order guide)
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.20.
    		Factory-verified
    KTI Tire inflator kit 2018–2019
    2019: Regal, Preferred II, Essence, Avenir, GS: S (2019 Sportback order guide)
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.6.
    		Factory-verified
    KU9 Seats, ventilated driver and front passenger 2018–2019
    only in: Sportback; 2019: GS: S (2019 Sportback order guide)
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.4.
    		Factory-verified
    MCY Audio system feature, USB port 2018–2019
    2019: all trims: S (2019 Sportback order guide); the 2019 guide reads inside the front console
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.2.
    		Factory-verified
    MDT Moldings 2018
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    		Factory-verified
    N34 Steering wheel, leather-wrapped, 3-spoke 2018–2019
    2019: Preferred, Preferred II, Essence, Avenir: S (2019 Sportback order guide)
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.5.
    		Factory-verified
    N37 Steering column, tilt and telescopic 2018–2019
    2019: all trims: S (2019 Sportback order guide)
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.5.
    		Factory-verified
    N52 Steering wheel 2018–2019
    2019: Regal: S (2019 Sportback order guide); the 2019 guide reads 3-spoke
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.5.
    		Factory-verified
    N55 Steering wheel, leather-wrapped, 3-spoke 2018–2019
    only in: Sportback; 2019: GS: S (2019 Sportback order guide); the 2019 guide reads sport, flat bottom
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.5.
    		Factory-verified
    NJ0 Steering, power, electric, rack-mounted, variable assist 2018–2019
    2019: Preferred II, Essence, Avenir, GS: S; Preferred: O (2019 Sportback order guide); 2018: included and only available with B26 on Preferred; same wording as NJ1
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1, p.5.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.8.
    		Factory-verified
    NJ1 Steering, power, electric, rack-mounted, variable assist 2018–2019
    only in: Sportback; 2019: Regal, Preferred: S (2019 Sportback order guide); same wording as NJ0
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1, p.5.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.7.
    		Factory-verified
    NKC Noise control system, active noise cancellation 2018–2019
    2019: all trims: S (2019 Sportback order guide)
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.2.
    		Factory-verified
    P0G GM Commercial Link, 1 year of service 2018–2019
    only in: Sportback; 2019: Preferred, Preferred II, Essence, Avenir, GS: O (2019 Sportback order guide)
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.35.
    		Factory-verified
    P0H GM Commercial Link, 2 years of service 2018–2019
    only in: Sportback; 2019: Preferred, Preferred II, Essence, Avenir, GS: O (2019 Sportback order guide)
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.35.
    		Factory-verified
    P0I GM Commercial Link, 3 years of service 2018–2019
    only in: Sportback; 2019: Preferred, Preferred II, Essence, Avenir, GS: O (2019 Sportback order guide); the 2019 guide prints POI with a letter O; P0I in the 2018 list
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.36.
    		Factory-verified
    P0J OnStar Fleet Safety and Security, additional 21 months 2019
    2019: Preferred, Preferred II, Essence, Avenir, GS: O (2019 Sportback order guide); new for 2019; the guide prints POJ with a letter O; fleet orders
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.33.
    		Factory-verified
    P0K OnStar Fleet Safety and Security, additional 33 months 2019
    2019: Preferred, Preferred II, Essence, Avenir, GS: O (2019 Sportback order guide); new for 2019; the guide prints POK with a letter O; fleet orders
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.33.
    		Factory-verified
    P0L OnStar Fleet Safety and Security, additional 45 months 2019
    2019: Preferred, Preferred II, Essence, Avenir, GS: O (2019 Sportback order guide); new for 2019; the guide prints POL with a letter O; fleet orders
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.33.
    		Factory-verified
    P0M OnStar Fleet Remote Access, additional 21 months 2019
    2019: Preferred, Preferred II, Essence, Avenir, GS: O (2019 Sportback order guide); new for 2019; the guide prints POM with a letter O; fleet orders
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.33.
    		Factory-verified
    P0N OnStar Fleet Remote Access, additional 33 months 2019
    2019: Preferred, Preferred II, Essence, Avenir, GS: O (2019 Sportback order guide); new for 2019; fleet orders
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.34.
    		Factory-verified
    P0O OnStar Fleet Remote Access, additional 45 months 2019
    2019: Preferred, Preferred II, Essence, Avenir, GS: O (2019 Sportback order guide); new for 2019; fleet orders
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.34.
    		Factory-verified
    PQF OnStar Protection Service, 6 months 2018
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    		Factory-verified
    PQG OnStar Protection Service, 18 months 2018
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    		Factory-verified
    PQH OnStar Protection Service, 30 months 2018
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    		Factory-verified
    PQI OnStar Security Service, 6 months 2018
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    		Factory-verified
    PQL OnStar Security Service, 18 months 2018
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    		Factory-verified
    PQM OnStar Security Service, 30 months 2018
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    		Factory-verified
    PQP OnStar Fleet Guidance Service, additional 6 months 2018
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    		Factory-verified
    PQQ OnStar Fleet Guidance Service, additional 18 months 2018
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    		Factory-verified
    PQT OnStar Fleet Guidance Service, additional 30 months 2018
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    		Factory-verified
    PR6 SiriusXM Satellite Radio, additional 9 months of the SiriusXM All Access Package 2018–2019
    2019: Preferred, Preferred II, Essence, Avenir, GS: O (2019 Sportback order guide); fleet orders
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.34.
    		Factory-verified
    PR7 SiriusXM Satellite Radio, additional 21 months of the SiriusXM All Access Package 2018–2019
    2019: Preferred, Preferred II, Essence, Avenir, GS: O (2019 Sportback order guide); fleet orders
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.34.
    		Factory-verified
    PR8 SiriusXM Satellite Radio, additional 33 months of the SiriusXM All Access Package 2018–2019
    2019: Preferred, Preferred II, Essence, Avenir, GS: O (2019 Sportback order guide); fleet orders
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.35.
    		Factory-verified
    PRD OnStar Protection Service, 42 months 2018
    only in: Sportback
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    		Factory-verified
    PRE OnStar Security Service, 42 months 2018
    only in: Sportback
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    		Factory-verified
    PRF OnStar Fleet Guidance Service, additional 42 months 2018
    only in: Sportback
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    		Factory-verified
    Q6M Wheels, 19" (48.3 cm) aluminum 2018–2019
    only in: Sportback; 2019: GS: S (2019 Sportback order guide); the 2019 guide adds Technical Gray accents
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.7.
    		Factory-verified
    QCL Tire, compact spare, T125/70R17 2018–2019
    only in: Sportback; 2019: Preferred, Preferred II, Essence: S (2019 Sportback order guide); the 2019 guide adds blackwall
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.6.
    		Factory-verified
    R0X Tires, 245/45R18 all-season, blackwall 2018–2019
    only in: Sportback; 2019: Preferred II, Essence: S; Preferred: O (2019 Sportback order guide); the 2019 guide prints ROX with a letter O in places
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.6.
    		Factory-verified
    R3X Tires, P235/50R18 all-season, blackwall 2018
    only in: TourX
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    		Factory-verified
    RA9 Tires, P225/55R17, all-season, blackwall 2018–2019
    only in: Sportback; 2019: Regal, Preferred: S (2019 Sportback order guide)
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.6.
    		Factory-verified
    RCV Wheels, 18" (45.7 cm) 5-spoke Dynamic aluminum 2018–2019
    only in: Sportback; 2019: Preferred: O (2019 Sportback order guide)
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.26.
    		Factory-verified
    RD1 Wheels, 18" (45.7 cm) aluminum 2018–2019
    only in: Sportback; 2019: Preferred II, Essence: S (2019 Sportback order guide); the 2019 guide adds machine-faced with painted pockets
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.6.
    		Factory-verified
    RMI Tires, 245/40R19 all-season, blackwall 2018–2019
    only in: Sportback; 2019: Avenir, GS: S (2019 Sportback order guide)
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.6.
    		Factory-verified
    ROV OnStar 4G LTE for Fleet, 20GB, 12 months 2018
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    		Factory-verified
    ROW OnStar 4G LTE for Fleet, 36GB, 24 months 2018
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    		Factory-verified
    RSC Wheels, 17" (43.2 cm) aluminum 2018–2019
    only in: Sportback; 2019: Regal, Preferred: S (2019 Sportback order guide); the 2019 guide adds 5-spoke
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.6.
    		Factory-verified
    RV1 Wheels, 18" (45.7 cm) aluminum 2018
    only in: TourX
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    		Factory-verified
    RV9 Wheel, compact spare, 17" (43.2 cm) steel 2018–2019
    only in: Sportback; 2019: Preferred, Preferred II, Essence: S (2019 Sportback order guide)
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.6.
    		Factory-verified
    RWU LPO, cargo area organizer, collapsible 2018–2019
    2019: Preferred, Preferred II, Essence, Avenir, GS: O (2019 Sportback order guide); the 2019 guide adds universal
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.13.
    		Factory-verified
    RYT LPO, first aid kit 2018–2019
    2019: Preferred, Preferred II, Essence, Avenir, GS: O (2019 Sportback order guide)
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.14.
    		Factory-verified
    RZ1 LPO, premium carpeted front and rear floor mats, black 2019
    2019: Preferred, Preferred II, Essence, Avenir, GS: O (2019 Sportback order guide); new for 2019
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.13.
    		Factory-verified
    S08 LPO, Highway Safety Kit 2018–2019
    2019: Preferred, Preferred II, Essence, Avenir, GS: O (2019 Sportback order guide)
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.14.
    		Factory-verified
    S0M LPO, illuminated door sill plates 2018–2019
    2019: Preferred, Preferred II, Essence, Avenir, GS: O (2019 Sportback order guide); the 2019 guide prints SOM with a letter O in places
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.14.
    		Factory-verified
    S5W LPO, seat back organizer 2018–2019
    2019: Preferred, Preferred II, Essence, Avenir, GS: O (2019 Sportback order guide)
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.14.
    		Factory-verified
    S6P LPO, remote start kit 2019
    2019: Regal: O (2019 Sportback order guide); new for 2019
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.14.
    		Factory-verified
    SBZ LPO, sport pedal kit 2018–2019
    2019: Preferred, Preferred II, Essence, Avenir, GS: O (2019 Sportback order guide)
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.14.
    		Factory-verified
    SFE LPO, wheel locks 2018–2019
    2019: Preferred, Preferred II, Essence, Avenir, GS: O (2019 Sportback order guide)
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.14.
    		Factory-verified
    SIF LPO, universal tablet holder 2018–2019
    2019: Preferred, Preferred II, Essence, Avenir, GS: O (2019 Sportback order guide)
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.14.
    		Factory-verified
    T2T Remote control 2018–2019
    2019: all trims: S (2019 Sportback order guide)
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.4.
    		Factory-verified
    T3U Fog lamps 2018–2019
    only in: TourX; 2019: Preferred II, Essence, Avenir: S (2019 Sportback order guide)
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.5.
    		Factory-verified
    T4A Headlamps, halogen composite 2018–2019
    2019: Regal, Preferred, Preferred II, Essence, GS: S (2019 Sportback order guide)
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.5.
    		Factory-verified
    T4L Headlamps, LED 2018–2019
    2019: Avenir: S; Preferred, Preferred II, Essence, GS: O (2019 Sportback order guide)
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.9.
    		Factory-verified
    T7E Daytime running lamps 2018–2019
    2019: all trims: S (2019 Sportback order guide)
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.5.
    		Factory-verified
    T83 Headlamp control, automatic on and off 2018–2019
    2019: all trims: S (2019 Sportback order guide)
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.5.
    		Factory-verified
    T95 Lamps, cornering 2018–2019
    2019: part of B26 and BAQ (2019 Sportback order guide)
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.12.
    		Factory-verified
    TC2 Hands-free liftgate 2018
    only in: TourX
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    		Factory-verified
    TDM Teen Driver 2018–2019
    2019: all trims: S (2019 Sportback order guide)
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.2.
    		Factory-verified
    TR7 Headlamp control, leveling system, automatic 2018–2019
    2019: part of B26 and BAQ (2019 Sportback order guide)
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.12.
    		Factory-verified
    U2K SiriusXM Satellite Radio 2018–2019
    2019: all trims: S (2019 Sportback order guide)
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.2.
    		Factory-verified
    U2M Audio system, SiriusXM and HD Radio 2018–2019
    2019: Avenir: S; Preferred, Preferred II, Essence, GS: O (2019 Sportback order guide); the 2019 guide reads HD Radio only
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.2.
    		Factory-verified
    U65 Audio system feature, 7-speaker system 2018–2019
    only in: Sportback; 2019: Regal, Preferred, Preferred II, Essence: S (2019 Sportback order guide); 2019: FWD models only
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.2.
    		Factory-verified
    U77 Antenna, integral rear 2018–2019
    2019: Regal, Preferred: S (2019 Sportback order guide)
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.5.
    		Factory-verified
    U80 Compass display 2018–2019
    2019: all trims: S (2019 Sportback order guide)
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.2.
    		Factory-verified
    UD5 Park assist, front and rear 2018–2019
    only in: Sportback; 2019: GS: S (2019 Sportback order guide)
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.6.
    		Factory-verified
    UD7 Park assist, rear 2018–2019
    2019: Avenir: S; Preferred, Preferred II, Essence: O (2019 Sportback order guide)
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.10.
    		Factory-verified
    UDD Display, driver instrument information enhanced, 4.2" multi-color 2018–2019
    2019: Preferred II, Essence, Avenir: S; Preferred: O (2019 Sportback order guide)
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.3.
    		Factory-verified
    UE1 OnStar Guidance Plan, limited trial service 2018–2019
    2019: all trims: S (2019 Sportback order guide); the Sportback list also prints OnStar and Buick connected services capable, as does the 2019 guide
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.3.
    		Factory-verified
    UE4 Following distance indicator 2018–2019
    2019: Essence, Avenir, GS: O (2019 Sportback order guide)
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.20.
    		Factory-verified
    UEU Forward collision alert 2018–2019
    2019: Essence, Avenir, GS: O (2019 Sportback order guide)
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.20.
    		Factory-verified
    UFG Rear cross-traffic alert 2018–2019
    2019: Avenir, GS: S; Preferred, Preferred II, Essence: O (2019 Sportback order guide)
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.4.
    		Factory-verified
    UGE Tail lamps, LED 2018–2019
    2019: all trims: S (2019 Sportback order guide)
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.6.
    		Factory-verified
    UGN Automatic braking, forward 2018–2019
    2019: Essence, Avenir, GS: O (2019 Sportback order guide); the TourX list prints Front Automatic Braking
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.25.
    		Factory-verified
    UHX Lane keep assist 2018–2019
    2019: Essence, Avenir, GS: O (2019 Sportback order guide)
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.21.
    		Factory-verified
    UJM Tire pressure monitoring system 2018–2019
    2019: all trims: S (2019 Sportback order guide); the TourX list prints Tire Pressure Monitor System
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.5.
    		Factory-verified
    UKC Lane change alert with side blind zone alert 2018–2019
    2019: Avenir, GS: S; Preferred, Preferred II, Essence: O (2019 Sportback order guide)
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.3.
    		Factory-verified
    UKJ Pedestrian braking, front 2018–2019
    2019: Essence, Avenir, GS: O (2019 Sportback order guide); the TourX list prints Pedestrian detection, front
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.20.
    		Factory-verified
    UMN Speedometer, miles/kilometers 2018–2019
    2019: all trims: S (2019 Sportback order guide)
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.5.
    		Factory-verified
    UQ3 Audio system feature, enhanced speaker system 2018–2019
    2019: Preferred II, Essence, GS: S (2019 Sportback order guide); the 2019 guide reads enhanced 7-speaker system with active noise cancellation, AWD models only
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.2.
    		Factory-verified
    UQA Audio system feature, Bose premium 8-speaker system 2018–2019
    2019: Preferred, Preferred II, Essence, Avenir, GS: O (2019 Sportback order guide)
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.19.
    		Factory-verified
    US3 Antenna, rear integrated diversity 2018–2019
    2019: Preferred II, Essence, Avenir, GS: S; Preferred: O (2019 Sportback order guide)
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.5.
    		Factory-verified
    USS USB charging port 2018–2019
    2019: all trims: S (2019 Sportback order guide)
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.2.
    		Factory-verified
    UTJ Theft-deterrent system 2018–2019
    2019: all trims: S (2019 Sportback order guide)
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.5.
    		Factory-verified
    UV6 Head-up display 2018–2019
    only in: Sportback; 2019: GS: O (2019 Sportback order guide)
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.20.
    		Factory-verified
    UVC Rear vision camera 2018–2019
    2019: all trims: S (2019 Sportback order guide)
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.4.
    		Factory-verified
    UVD Steering wheel, heated 2018–2019
    2019: Preferred II, Essence, Avenir, GS: S (2019 Sportback order guide)
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.5.
    		Factory-verified
    V33 Tool kit, road emergency 2018–2019
    only in: Sportback; 2019: Preferred, Preferred II, Essence: S (2019 Sportback order guide)
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.6.
    		Factory-verified
    VAV LPO, all-weather floor mats 2018–2019
    2019: Preferred, Preferred II, Essence, Avenir, GS: O (2019 Sportback order guide)
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.13.
    		Factory-verified
    VK3 License plate bracket, front 2018–2019
    2019: Regal, Preferred, Preferred II, Essence, Avenir, GS: O (2019 Sportback order guide)
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.14.
    		Factory-verified
    VQK LPO, front and rear molded splash guards 2018–2019
    2019: Preferred, Preferred II, Essence, Avenir: O (2019 Sportback order guide)
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.14.
    		Factory-verified
    VV4 OnStar 4G LTE 2018–2019
    2019: all trims: S (2019 Sportback order guide); the Sportback list also prints Buick 4G LTE for it; the 2019 guide calls it Buick 4G LTE
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.3.
    		Factory-verified
    WH6 LPO, cargo net 2018–2019
    2019: Preferred, Preferred II, Essence, Avenir, GS: O (2019 Sportback order guide)
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.13.
    		Factory-verified
    WR8 Wheels, 19" (48.3 cm) aluminum, Pearl Nickel finish 2019
    2019: Avenir: S (2019 Sportback order guide); new for 2019
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.7.
    		Factory-verified
    Paint
    G0Y Paint, Rioja Red Metallic 2019
    2019: premium paint; not on Regal or GS (2019 Sportback order guide)
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.32.
    		Factory-verified
    G6R Paint, Carrageen Metallic 2019
    2019: premium paint; not on Regal, Avenir or GS (2019 Sportback order guide)
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.32.
    		Factory-verified
    GAN Paint, Quicksilver Metallic 2019
    2019: premium paint; not on Avenir (2019 Sportback order guide)
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.32.
    		Factory-verified
    GAZ Paint, Summit White 2019
    2019: not on Avenir or GS (2019 Sportback order guide)
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.32.
    		Factory-verified
    GB9 Paint, Ebony Twilight Metallic 2019
    2019: premium paint (2019 Sportback order guide)
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.32.
    		Factory-verified
    GDX Paint, Dark Moon Blue Metallic 2019
    2019: premium paint; not on Regal or GS (2019 Sportback order guide)
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.32.
    		Factory-verified
    GG7 Paint, Sport Red 2019
    2019: GS only (2019 Sportback order guide)
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.32.
    		Factory-verified
    GP6 Paint, White Frost Tricoat 2019
    2019: premium paint; not on Regal (2019 Sportback order guide)
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.32.
    		Factory-verified
    GR5 Paint, Smoked Pearl Metallic 2019
    2019: premium paint; not on Regal (2019 Sportback order guide)
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.32.
    		Factory-verified
    Interior Trim
    H0Y Interior trim, Ebony seats with Ebony interior accents, leather-appointed 2019
    only in: Essence; seat A51 front bucket; 2019 (2019 Sportback order guide)
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.32.
    		Factory-verified
    HBR Interior trim, Whisper Beige seats with Ebony interior accents, perforated leather 2019
    only in: Avenir; seat A51 front bucket; 2019 (2019 Sportback order guide)
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.32.
    		Factory-verified
    HBX Interior trim, Ebony seats with Ebony interior accents, cloth 2019
    only in: Preferred (1SB); the table row covers Regal and Preferred, but footnote 1 on HBX1 says not available on 1SV, so the 1 reads as a footnote mark; seat A51 front bucket; 2019 (2019 Sportback order guide, p.32; no [FD] because the guide prints the code only with the attached footnote digit)
    		 Confirmed
    HCJ Interior trim, Shale seats with Ebony interior accents, cloth 2019
    only in: Regal, Preferred; seat A51 front bucket; 2019 (2019 Sportback order guide)
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.32.
    		Factory-verified
    HDI Interior trim, Ebony seats with Ebony interior accents, premium cloth 2019
    only in: Preferred II; seat A51 front bucket; 2019 (2019 Sportback order guide)
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.32.
    		Factory-verified
    HNW Interior trim, Shale seats with Ebony interior accents, premium cloth 2019
    only in: Preferred II; seat A51 front bucket; 2019 (2019 Sportback order guide)
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.32.
    		Factory-verified
    HNX Interior trim, Shale seats with Ebony interior accents, leather-appointed 2019
    only in: Essence; seat A51 front bucket; 2019 (2019 Sportback order guide)
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.32.
    		Factory-verified
    HX1 Interior trim, Ebony seats with Ebony interior accents, sport front buckets, perforated leather 2019
    only in: GS; seat A51 front bucket; 2019 (2019 Sportback order guide)
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.32.
    		Factory-verified
    HXC Interior trim, Ebony seats with Ebony interior accents, perforated leather 2019
    only in: Avenir; seat A51 front bucket; 2019 (2019 Sportback order guide)
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.32.
    		Factory-verified
    Internal / Process
    FE9 internal Emissions, Federal requirements 2018–2019
    ; 2019: Regal, Preferred, Preferred II, Essence, Avenir, GS: O (2019 Sportback order guide)
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1, p.5.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.14.
    		Factory-verified
    NB8 internal Emissions override, California 2018–2019
    ; 2019: Regal, Preferred, Preferred II, Essence, Avenir, GS: O (2019 Sportback order guide)
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1, p.5.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.15.
    		Factory-verified
    NB9 internal Emissions override, state-specific 2018–2019
    ; 2019: Regal, Preferred, Preferred II, Essence, Avenir, GS: O (2019 Sportback order guide)
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1, p.5.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.15.
    		Factory-verified
    NC7 internal Emissions override, Federal 2018–2019
    ; 2019: Regal, Preferred, Preferred II, Essence, Avenir, GS: O (2019 Sportback order guide)
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1, p.5.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.15.
    		Factory-verified
    NE1 internal Emissions, Connecticut, Delaware, Maine, Maryland, Massachusetts, New Jersey, New York, Oregon, Pennsylvania, Rhode Island, Vermont and Washington state requirements 2018–2019
    ; 2019: Regal, Preferred, Preferred II, Essence, Avenir, GS: O (2019 Sportback order guide)
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1, p.5.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.14.
    		Factory-verified
    R9Y internal Fleet free maintenance credit 2018–2019
    ; 2019: Preferred, Preferred II, Essence, Avenir, GS: O (2019 Sportback order guide); fleet and government order types only
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1, p.5.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.15.
    		Factory-verified
    YF5 internal Emissions, California state requirements 2018–2019
    ; 2019: Regal, Preferred, Preferred II, Essence, Avenir, GS: O (2019 Sportback order guide)
    GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1, p.5.
    GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
    GM factory document — 2019 buick regal sportback order guide copy gm authority, p.14.
    		Factory-verified

    Source document: buick/regal-e2xx.md. Rows marked — record an option the factory offered whose RPO code is not documented in the consulted sources.