- 2018–2019 Factory-verified
LT Leather: S; GM Authority's 2020 changes page lists its deletion for 2020 and gives Q6S
SP6 Factory-verified
Also documented for Buick
Documented applications
This page aggregates every documented appearance of SP6 in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.