Radio, electronically tuned AM stereo/FM stereo, cassette, graphic equalizer, digital clock, steering wheel touch controls

Years 1985–89 Models 2

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Also described as Radio, ETR AM stereo/FM stereo, auto reverse, seek and scan, equalizer, touch control, clock

Also documented for Chevrolet

Documented applications

Fiero (1984–1988)

1985–1987 Single-source

years from the OSG; conceptcarz's 1987 list agrees

Firebird — Third generation (1982–1992)

1987–1989 Single-source

Trans Am GTA; Firebird years: 3rdgenformula option pages 1987–1989

This page aggregates every documented appearance of UT4 in the Pontiac reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.