- 2023 Factory-verified
Essence, Premium: O; dealer-installed
PCL Factory-verified
Also described as LPO, Illumination PackageSafety Package II
Also documented for ChevroletGMC
Documented applications
- 2025–2027 Factory-verified
O on all trims; includes S0M and S3I
- 2019 Factory-verified
Essence: O; new for 2019; contents KEM, CE1, UD5, UEU and UFL
This page aggregates every documented appearance of PCL in the Buick reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.