Spare tire, full size, on-off road

Years 1983–90 Models 2 Factory citations 11

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Also documented for Chevrolet

Documented applications

Jimmy — first generation (1983–1994)

1983–1984, 1986–1989 Factory-verified

replaces the compact spare; the 1989 page prints zK5; shared S/T platform code; cited from the joint S-10/15 Blazer/Jimmy pages of the S-10 Blazer kit

GM Heritage factory kit — 1983 Chevrolet S 10 Blazer, p.9.
GM Heritage factory kit — 1984 Chevrolet S 10 Blazer, p.10.
GM Heritage factory kit — 1986 Chevrolet S 10 Blazer, p.9.
GM Heritage factory kit — 1987 Chevrolet S 10 Blazer, p.45.
GM Heritage factory kit — 1988 Chevrolet S 10 Blazer, p.12.
GM Heritage factory kit — 1989 Chevrolet Blazer, p.18.

Sonoma — first generation (1982–1993)

1983–1985, 1989–1990 Factory-verified

1990 from the ZM6 requirement remark; shared S-series code; cited from the joint S-10/S-15 pages of the S-10 kits

GM Heritage factory kit — 1983 Chevrolet S 10, p.29.
GM Heritage factory kit — 1984 Chevrolet S 10, p.19.
GM Heritage factory kit — 1985 Chevrolet S 10, p.25.
GM Heritage factory kit — 1989 Chevrolet S 10, p.24.
GM Heritage factory kit — 1990 Chevrolet S 10, p.23.

This page aggregates every documented appearance of ZK5 in the GMC reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.