Color combination, special two-tone, Big Dooley

Years 1983–87, 2023 Models 2 Factory citations 7

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Also described as Warranty, 100,000 kilometers, 3 years

Also documented for GMC

Documented applications

Bolt EV — first generation (2017–2023)

2023 Factory-verified internal

GM factory document — 2023 chevrolet 23 bolt ev body builder sm en us 2022aug26, p.11.
GM factory document — 2023 chevrolet 23 bolt euv body builder sm en us 2022aug29, p.12.

C/K pickup — Square body (1983–1991)

1983–1987 Factory-verified

only in: 30 series fleetside with R05 dual rear wheels

GM Heritage factory kit — 1983 Chevrolet Truck, p.37.
GM Heritage factory kit — 1984 Chevrolet Truck, p.35.
GM Heritage factory kit — 1985 Chevrolet Truck, p.34.
GM Heritage factory kit — 1986 Chevrolet Truck, p.167.
GM Heritage factory kit — 1987 Chevrolet Truck, p.51.

This page aggregates every documented appearance of ZY9 in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.