Generator, 66 amp

Years 1983–86 Models 6 Factory citations 20

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Also described as Generator

Also documented for Chevrolet

Documented applications

Jimmy (full-size) — Square body (1983–1991)

1983–1986 Factory-verified

included with B3J, Z82, V10 and C60; shared square-body platform code; cited from the Chevrolet Blazer kit

GM Heritage factory kit — 1983 Chevrolet Blazer, p.9.
GM Heritage factory kit — 1984 Chevrolet Blazer RV Full Size, p.18.
GM Heritage factory kit — 1985 Chevrolet Blazer RV Full Size, p.11.
GM Heritage factory kit — 1986 Chevrolet Blazer, p.12.

Jimmy — first generation (1983–1994)

1983–1985 Factory-verified

included with C60, C49 or V10; 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.8.
GM Heritage factory kit — 1984 Chevrolet S 10 Blazer, p.8.
GM Heritage factory kit — 1985 Chevrolet S 10 Blazer, p.11.

Sierra — Square body (1983–1991)

1984–1986 Factory-verified

shared platform code; cited from the square-body C/K pickup kits; 1983 is left out: its page names K81 only in the B3J diesel equipment package contents

GM Heritage factory kit — 1984 Chevrolet Truck, p.45.
GM Heritage factory kit — 1985 Chevrolet Truck, p.43.
GM Heritage factory kit — 1986 Chevrolet Truck, p.159.

Sonoma — first generation (1982–1993)

1983–1985 Factory-verified

66 amp; the merged S-10 Blazer doc writes Generator, 66 amp; 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.31.
GM Heritage factory kit — 1984 Chevrolet S 10, p.17.
GM Heritage factory kit — 1985 Chevrolet S 10, p.23.

Suburban — Square body (1983–1991)

1983–1986 Factory-verified

included with Z82, C60, C69, B3J, V10, C36 or C49; shared square-body platform code; cited from the Chevrolet Suburban kit

GM Heritage factory kit — 1983 Chevrolet Suburban, p.16.
GM Heritage factory kit — 1984 Chevrolet Suburban, p.19.
GM Heritage factory kit — 1985 Chevrolet Suburban, p.19.
GM Heritage factory kit — 1986 Chevrolet Suburban, p.19.

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

1983, 1984, 1986 Factory-verified

Delcotron; shared G-van platform code; cited from the Chevrolet G-Van kit

GM Heritage factory kit — 1983 Chevrolet Vandura, p.15.
GM Heritage factory kit — 1984 Chevrolet G Van, p.17.
GM Heritage factory kit — 1986 Chevrolet G Van, p.26.

This page aggregates every documented appearance of K81 in the GMC reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.