Manual transaxle, 5 speed

Years 1986–96 Models 3 Factory citations 16

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Also described as Manual transaxle, 5 speed (3.73 first gear)

Documented applications

Beretta — L-body (1987–1996)

1988–1996 Factory-verified

base transmission with the L4 engines; the kits name Isuzu as maker from 1991; GM later reused MR3 for an Eaton truck transmission; cavalier-gen1 reads MR3 as "Manual transaxle, 5 speed (3.73 first gear)"

GM Heritage factory kit — 1988 Chevrolet Beretta, p.6.
GM Heritage factory kit — 1989 Chevrolet Beretta, p.6.
GM Heritage factory kit — 1990 Chevrolet Beretta, p.26.
GM Heritage factory kit — 1991 Chevrolet Beretta, p.6.
GM Heritage factory kit — 1992 Chevrolet Beretta, p.6.
GM Heritage factory kit — 1993 Chevrolet Beretta, p.4.
GM Heritage factory kit — 1994 Chevrolet Beretta, p.18.
GM Heritage factory kit — 1995 Chevrolet Beretta, p.21.
GM Heritage factory kit — 1996 Chevrolet Beretta, p.21.

Cavalier — first generation (1982–1987)

1986–1987 Factory-verified

power team pages only; with the 2.0 L L4, base on the wagon, convertible and hatchback, available on the others; the rparts GM list reads it as the Isuzu 5 speed

GM Heritage factory kit — 1986 Chevrolet Cavalier, p.4.
GM Heritage factory kit — 1987 Chevrolet Cavalier, p.4.

Corsica — L-body (1987–1996)

1989–1993 Factory-verified

with the L4 engines; the 1988 kit names no transmission code; 1994–1996 are not claimed: the 1994 power teams page (p.16) and drive-axle pages (1994 p.31, 1996 p.27) still print MR3, and the 1995 manual-transmission and clutch page (p.27) prints the Isuzu manual as MJ1, but the 1994 feature page (p.6) says the 5 speed was discontinued for 1994 and the 1994–1996 order guides offer the 3 and 4 speed automatics only; same description as beretta-gen1

GM Heritage factory kit — 1989 Chevrolet Corsica, p.20.
GM Heritage factory kit — 1990 Chevrolet Corsica, p.18.
GM Heritage factory kit — 1991 Chevrolet Corsica, p.6.
GM Heritage factory kit — 1992 Chevrolet Corsica, p.6.
GM Heritage factory kit — 1993 Chevrolet Corsica, p.4.

This page aggregates every documented appearance of MR3 in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.