- 2023 Single-source
chrome accent pieces; GM Authority reports it unavailable to order from October 2022; 2023: GM Authority 2023 Black Accent Package article
PDI Factory-verified
Also described as LPO, Bright Accent PackageNightfall EditionSierra HD Pro Safety packageGMC Pro Safety
Also documented for CadillacChevrolet
Documented applications
- 2026–2027 Factory-verified
AT4: O; Elevation, AT4X, Denali: not offered; the 2025 list carries the same name under XNF
- 2027 Factory-verified
Pro, Elevation, AT4, AT4X, Denali Ultimate: not offered; Denali: O (ADI available); includes S0M and S3I
- 2024–2027 Factory-verified
includes forward collision alert (UEU), following distance indicator (UE4), front pedestrian braking (UKJ), IntelliBeam (TQ5), lane departure warning (UFL), buckle to drive (T8Z) and automatic emergency braking (UHY); on every trim; 2024: GM Authority 2024 changes page (standard on all trims); Pro, SLE, SLT, AT4, AT4X, Denali, Denali Ultimate: included in the trim group
- 2025–2026 Factory-verified
This page aggregates every documented appearance of PDI in the GMC reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.