- 2003–2004 Factory-verifiedGM Heritage factory kit — 2003 Chevrolet Cavalier, p.20.GM Heritage factory kit — 2004 Chevrolet Cavalier, p.22.
WE4 Factory-verified
Also documented for BuickPontiac
Documented applications
This page aggregates every documented appearance of WE4 in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.