- 2017–2019 Factory-verified
2019 guide: SLE-1, SLE-2: O; SLT-1, SLT-2, Denali: S; only in: AWD with the LGX engine; GM Authority's 2020 changes page lists it as deleted for 2020
M7U Factory-verified
Also documented for BuickCadillac
Documented applications
This page aggregates every documented appearance of M7U in the GMC reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.