- 2014–2016 Factory-verified
only in: AWD (the guides name the AWD model); the 2007–2009 lists give this gearbox as MH6 and MY9.
M7X Factory-verified
Also documented for Chevrolet
Documented applications
This page aggregates every documented appearance of M7X in the GMC reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.