- 2015–2016 Factory-verified
2015: WT, LT, Z71: O; Base: not offered; requires SIE; not in the 2017 or 2018 guides
S42 Factory-verified
Also documented for GMC
Documented applications
This page aggregates every documented appearance of S42 in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.