AM Push Button Radio & Tape Player

Years 1970–82 Models 4 Factory citations 4

Also described as AM radio w/ stereo 8-trackRadio AM/tape playerStereo tape system w/AM radio

Documented applications

Camaro

1970s–1981 Confirmed

Chevelle / El Camino

1970–1972 Factory-verified

GM Heritage factory kit — 1970 Chevrolet Chevelle, p.20.
GM Heritage factory kit — 1972 Chevrolet Chevelle, p.57.

Impala / Full-Size

1970- Confirmed

Nova / Chevy II

1975–1979 Factory-verified

GM Heritage factory kit — 1975 Chevrolet Nova, p.150.
GM Heritage factory kit — 1979 Chevrolet Nova, p.34.

This page aggregates every documented appearance of UM1 in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.