Speaker system, 4, base

Years 1991–94, 2005–09 Models 6 Factory citations 14

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Also described as Speaker system, Bose

Also documented for Cadillac Pontiac Saturn

Documented applications

Aveo — T200 (2004–2008)

2008 Factory-verified

GM factory document — 2008 chevrolet aveo rpo code list, p.1.

Aveo — T250 (2009–2011)

2009 Factory-verified

GM factory document — 2009 chevrolet aveo rpo code list, p.1.

Caprice — fourth generation, B-body (1991–1996)

1991 Factory-verified

GM Heritage factory kit — 1991 Chevrolet Caprice, p.82.

Cobalt — Delta (2005–2010)

2005–2009 Factory-verified

GM factory document — 2005 chevrolet cobalt rpo code list, p.1.
GM factory document — 2006 chevrolet cobalt rpo code list, p.1.
GM factory document — 2007 chevrolet cobalt rpo code list, p.1.
GM factory document — 2008 chevrolet cobalt rpo code list, p.1.
GM factory document — 2009 chevrolet cobalt rpo code list, p.1.

Lumina — first generation, W-body (1990–1994)

1991–1994 Factory-verified

GM Heritage factory kit — 1991 Chevrolet Lumina, p.75.
GM Heritage factory kit — 1992 Chevrolet Lumina, p.57.
GM Heritage factory kit — 1993 Chevrolet Lumina, p.74.
GM Heritage factory kit — 1994 Chevrolet Lumina, p.43.

Malibu — Sixth generation, Epsilon (2004–2008)

2005 Factory-verified

GM factory document — 2005 chevrolet malibu rpo code list, p.1.
GM Heritage factory kit — 2005 Chevrolet Malibu, p.23.

This page aggregates every documented appearance of UQ4 in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.