Steering, power, not desired

Years 1983–89 Models 6 Factory citations 28

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Also documented for Chevrolet Pontiac Saturn

Documented applications

Jimmy — first generation (1983–1994)

1983–1984, 1986–1989 Factory-verified

not with Z82; 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.15.

Safari — First generation (1985–1994)

1986, 1987 Factory-verified

shared M-body code; cited from the joint Astro/Safari pages of the Astro kits.

GM Heritage factory kit — 1986 Chevrolet Astro Van, p.15.
GM Heritage factory kit — 1987 Chevrolet Astro Van, p.29.

Sierra — Square body (1983–1991)

1984–1987 Factory-verified

shared platform code; cited from the square-body C/K pickup kits; no-charge delete of power steering

GM Heritage factory kit — 1984 Chevrolet Truck, p.47.
GM Heritage factory kit — 1985 Chevrolet Truck, p.45.
GM Heritage factory kit — 1986 Chevrolet Truck, p.156.
GM Heritage factory kit — 1987 Chevrolet Truck, p.60.

Sonoma — first generation (1982–1993)

1983–1989 Factory-verified

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.20.
GM Heritage factory kit — 1985 Chevrolet S 10, p.25.
GM Heritage factory kit — 1986 Chevrolet S 10, p.17.
GM Heritage factory kit — 1987 Chevrolet S 10, p.24.
GM Heritage factory kit — 1988 Chevrolet S 10, p.35.
GM Heritage factory kit — 1989 Chevrolet S 10, p.24.

Suburban — Square body (1983–1991)

1983–1987 Factory-verified

only in: C/R models; not with Z82 or B3J; shared square-body platform code; cited from the Chevrolet Suburban kit

GM Heritage factory kit — 1983 Chevrolet Suburban, p.18.
GM Heritage factory kit — 1984 Chevrolet Suburban, p.20.
GM Heritage factory kit — 1985 Chevrolet Suburban, p.21.
GM Heritage factory kit — 1986 Chevrolet Suburban, p.22.
GM Heritage factory kit — 1987 Chevrolet Suburban, p.27.

Vandura and Rally — Second generation G-series (1983–1996)

1983, 1984, 1986, 1988 Factory-verified

G10 only; 1984 from the February 1984 data book pages in the mislabelled G-Van kit file; shared G-van platform code; cited from the Chevrolet G-Van kit

GM Heritage factory kit — 1983 Chevrolet Vandura, p.17.
GM Heritage factory kit — 1985 Chevrolet G Van, p.20.
GM Heritage factory kit — 1986 Chevrolet G Van, p.66.
GM Heritage factory kit — 1988 Chevrolet Vandura, p.23.

This page aggregates every documented appearance of N51 in the GMC reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.