- 2015 Single-source
GM Authority's 2016 changes article says MNK replaced the 2015 Trax's MH8 and MHB 6 speed automatics; no GM document for 2015
MHB Single-source
Also documented for Buick
Documented applications
This page aggregates every documented appearance of MHB in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.