- 2017 Factory-verified
premium paint; not on Base
G1M Factory-verified
Also documented for CadillacChevroletGMC
Documented applications
- 2016 Confirmed
premium paint, late availability (GM Authority 2016 changes)
- 2015–2016 Factory-verified
new for 2015 (GM's 2015 list); 2016: touch-up WA-410Y; premium paint; not on GS (1SX); not with Ebony with Saddle accents
- 2016 Factory-verified
2016: premium paint
This page aggregates every documented appearance of G1M in the Buick reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.