Preferred equipment group 1, Z34 coupe

Years 1991, 1993 Models 1 Factory citations 2

Documented applications

Lumina — first generation, W-body (1990–1994)

1991, 1993 Factory-verified

only in: Z34 coupe

GM Heritage factory kit — 1991 Chevrolet Lumina, p.14.
GM Heritage factory kit — 1993 Chevrolet Lumina, p.10.

This page aggregates every documented appearance of WSA1 in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.