U80 / U57 ◑ Single-source

Pontiac · Regular Production Option

Rear speaker / stereo tape

Years 1975 Models 1

Documented applications

Firebird / Trans Am →

• 1975 ◑ Single-source

  birdfire labels both "rear seat speaker"

This page aggregates every documented appearance of U80 / U57 in the Pontiac reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.