- 2018 Factory-verified
touch-up WA-454C; Jet Black interior only; printed as new in GM's 2018 order guide; also on GM Authority's 2018 RPO change list, which it calls GM's official list
G9A Factory-verified
Documented applications
This page aggregates every documented appearance of G9A in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.