Navigation system, single disc, with 6 disc CD changer, 6 speakers

Years 1989–92, 2003–08 Models 2 Factory citations 2

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Also described as Radio, AM/FM stereo, compact disc player, equalizer

Documented applications

Firebird — Third generation (1982–1992)

1989–1992 Single-source

the Camaro lists print U1C for their compact disc radio; Firebird years: 3rdgenformula option pages 1989–1992

Vibe — First generation (2003–2008)

2003–2008 Factory-verified

the list calls it AVN/DCD.

GM factory document — 2003 pontiac vibe awd rpo code list, p.1.
GM factory document — 2008 pontiac vibe fwd rpo code list, p.1.

This page aggregates every documented appearance of U1A in the Pontiac reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.