Extra-capacity rear suspension

Years 1973–87, 1990–93 Models 3 Factory citations 9

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Also described as Spring, rear, extra capacitySprings, rear, heavy duty

Also documented for GMC

Documented applications

C/K Trucks

1973–82 Confirmed

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C/K pickup — Square body (1983–1991)

1983–1987 Factory-verified

GM Heritage factory kit — 1983 Chevrolet Truck, p.20.
GM Heritage factory kit — 1984 Chevrolet Truck, p.47.
GM Heritage factory kit — 1985 Chevrolet Truck, p.42.
GM Heritage factory kit — 1986 Chevrolet Truck, p.156.
GM Heritage factory kit — 1987 Chevrolet Truck, p.60.

S-10 pickup — First generation (1982–1993)

1990–1993 Factory-verified

GM Heritage factory kit — 1990 Chevrolet S 10, p.13.
GM Heritage factory kit — 1991 Chevrolet S 10, p.22.
GM Heritage factory kit — 1992 Chevrolet S 10, p.17.
GM Heritage factory kit — 1993 Chevrolet S 10, p.12.

This page aggregates every documented appearance of G51 in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.