- 2023, 2025–2027 Factory-verified
the 2023 Upfitter list reads Ornamentation - Nameplate - None (SEO); O on all trims; in the 2025–2027 guides only in the Cargo and Passenger guides
5H3 Factory-verified
Also documented for Chevrolet
Documented applications
This page aggregates every documented appearance of 5H3 in the GMC reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.