- 2016–2017 Factory-verified
touch-up paint WA-383A; extra charge; not with SL or Denali; the 2016 guide marks it new; 2017: not with WFP
GB7 Factory-verified
Also documented for Chevrolet
Documented applications
This page aggregates every documented appearance of GB7 in the GMC reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.