Automatic transmission

Years 1970–82 Models 2 Factory citations 4

Also described as 3-speed automatic transmission3-speed automatic (merchandising)

Documented applications

Corvette (C3)

1978 Factory-verified

$0.00; 38,614 built

GM Heritage factory kit — 1978 Chevrolet Corvette, p.22.
1979 Factory-verified

$0.00; 41,454 built

GM Heritage factory kit — 1979 Chevrolet Corvette, p.7.
1980 Factory-verified

$0.00; 34,838 built

GM Heritage factory kit — 1980 Chevrolet Corvette, p.59.
1981 Factory-verified

$0.00; no count given by CAC (others omit the line); factory kit lists RPO MX1 on the option index (p.5)

GM Heritage factory kit — 1981 Chevrolet Corvette, p.5.

C/K Trucks

1970s–82 Single-source

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This page aggregates every documented appearance of MX1 in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.