- 2025–2027 Factory-verified
Pro (1SA); bench seat AZ3; the name matches the GM Authority 2026 Sierra HD interior colors page
H2G Factory-verified
Also described as Interior trim, vinyl, level 1, Jet Black
Also documented for BuickCadillacChevrolet
Documented applications
- 2019–2020, 2022–2026 Factory-verified
This page aggregates every documented appearance of H2G in the GMC reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.