- 2018 Factory-verified
touch-up WA-409B; extra cost, not on SL; deleted for 2019 (GM's 2019 change list via GM Authority)
GGA Factory-verified
Also documented for BuickCadillacChevrolet
Documented applications
This page aggregates every documented appearance of GGA in the GMC reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.