- 2013–2014, 2019 Factory-verified
Dark Argent Metallic lower accent in 2013–2014; the 2019 guide marks it new, premium paint with Black Carbon Metallic lower accent, not at start of production; GM Authority's 2021 changes page says Satin Steel Metallic was dropped for 2021
GYM Factory-verified
Also documented for Chevrolet
Documented applications
This page aggregates every documented appearance of GYM in the Buick reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.