- 2023, 2025–2027 Factory-verified
the 2023 Upfitter list marks it a duplicate of B38; O: Passenger 1LT; not offered: Passenger 1LS; in the 2025–2027 guides only in the Passenger guides
5B8 Factory-verified
Also documented for GMC
Documented applications
This page aggregates every documented appearance of 5B8 in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.