Transmission, manual, 3 speed

Years 1973–75, 1978–79, 1982–87 Models 5 Factory citations 11

Query this via API →

Also described as 3-speed manual3-speed manual transmission

Also documented for GMC

Documented applications

Monte Carlo

1973–1975 Single-source

nominal base transmission, rarely built

Nova / Chevy II

1978–1979 Factory-verified

GM Heritage factory kit — 1978 Chevrolet Nova, p.58.
GM Heritage factory kit — 1979 Chevrolet Nova, p.56.

C/K Trucks

c. 1982 Single-source

Modern lists reuse MM3

C/K pickup — Square body (1983–1991)

1983–1987 Factory-verified

GM Heritage factory kit — 1983 Chevrolet Truck, p.13.
GM Heritage factory kit — 1984 Chevrolet Truck, p.22.
GM Heritage factory kit — 1985 Chevrolet Truck, p.21.
GM Heritage factory kit — 1986 Chevrolet Truck, p.20.
GM Heritage factory kit — 1987 Chevrolet Truck, p.37.

Chevy Van — Second generation G-series (1983–1996)

1983, 1984, 1986, 1987 Factory-verified

standard on G10 and G20 (the 1983 page also on G30 without C6P); the 1988 page names it only in a cooling restriction, so 1988 is not claimed.

GM Heritage factory kit — 1983 Chevrolet Vandura, p.6.
GM Heritage factory kit — 1984 Chevrolet G Van, p.8.
GM Heritage factory kit — 1986 Chevrolet G Van, p.15.
GM Heritage factory kit — 1987 Chevrolet G Van, p.14.

This page aggregates every documented appearance of MM3 in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.