Preferred equipment group 1, IROC-Z and Z28 convertible

Years 1989–92 Models 2 Factory citations 5

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Also described as Preferred equipment group 1, ZR1

Documented applications

Camaro — Gen 3 (1982–1992)

1989–1992 Factory-verified

IROC-Z (1989-1990), Z28 (1991-1992)

GM Heritage factory kit — 1989 Chevrolet Camaro, p.39.
GM Heritage factory kit — 1990 Chevrolet Camaro, p.39.
GM Heritage factory kit — 1991 Chevrolet Camaro, p.29.
GM Heritage factory kit — 1992 Chevrolet Camaro, p.85.

Corvette — C4 (1984–1996)

1990 Factory-verified

the ZR-1 column of the preferred equipment group pages (pp.55, 159)

GM Heritage factory kit — 1990 Chevrolet Corvette, p.55.

This page aggregates every documented appearance of CZA1 in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.