Automatic transaxle, 4-speed overdrive (THM 440-T4)

Years 1983–90, 1992 Models 2 Factory citations 9

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Also described as Automatic transaxle, 4 speed (THM 440-T4)

Also documented for Buick Oldsmobile Pontiac

Documented applications

Celebrity — A-body (1982–1990)

1983–1990 Factory-verified

1983: with the LT7 diesel only; 1984: V6 or diesel; 1985 on: V6 only, and 1988–1989 required on V6 wagons; sold as MX0 on the option-weight pages and in the 1989 order guide

GM Heritage factory kit — 1983 Chevrolet Celebrity, p.5.
GM Heritage factory kit — 1984 Chevrolet Celebrity, p.41.
GM Heritage factory kit — 1985 Chevrolet Celebrity, p.5.
GM Heritage factory kit — 1986 Chevrolet Celebrity, p.5.
GM Heritage factory kit — 1987 Chevrolet Celebrity, p.9.
GM Heritage factory kit — 1988 Chevrolet Celebrity, p.7.
GM Heritage factory kit — 1989 Chevrolet Celebrity, p.29, p.68.
GM Heritage factory kit — 1990 Chevrolet Celebrity, p.17.

Lumina — first generation, W-body (1990–1994)

1992 Factory-verified

with the LH0; the 1992 p.30 entry prints the code in a parenthetical after the transmission name, which counts as an entry on MVMA pages (controller ruling), and the 1992 power-teams page prints MES; 1990 and 1991 are not claimed: the pages that print ME9 for those years (1990 pp.19, 23; 1991 pp.25, 73) have no readable model-year field and no dated page of either kit prints it; celebrity-gen1 reads ME9 as "Automatic transaxle, 4-speed overdrive (THM 440-T4)"

GM Heritage factory kit — 1992 Chevrolet Lumina, p.30.

This page aggregates every documented appearance of ME9 in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.