- 2020–2021 Single-source
with the LSY engine and a 3.47 axle ratio (GM Authority); 2020: GM Authority 2020 changes page; 2021: GM Authority 2021 Acadia page
M3G Single-source
Also documented for BuickCadillac
Documented applications
This page aggregates every documented appearance of M3G in the GMC reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.