Speaker system, 4, custom

Years 2004–08, 2017–19 Models 3 Factory citations 10

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Also described as Audio system feature, 4-speaker system, 2 tweeters and 2 front door speakers

Also documented for Buick Pontiac

Documented applications

Equinox — first generation (2005–2009)

2005 Factory-verified

GM factory document — 2005 chevrolet equinox rpo code list, p.1.

Malibu — Sixth generation, Epsilon (2004–2008)

2004–2008 Factory-verified

GM factory document — 2004 chevrolet malibu rpo code list, p.1.
GM factory document — 2005 chevrolet malibu rpo code list, p.1.
GM factory document — 2006 chevrolet malibu rpo code list, p.1.
GM factory document — 2007 chevrolet malibu rpo code list, p.1.
GM factory document — 2008 chevrolet malibu classic rpo code list, p.1.
GM Heritage factory kit — 2005 Chevrolet Malibu, p.23.

Sonic — first generation (2012–2020)

2017–2019 Factory-verified

only in: sedan; LS: S

GM factory document — 2017 chevrolet sonic order guide copy gm authority, p.64.
GM factory document — 2018 chevrolet sonic order guide copy gm authority, p.70.
GM factory document — 2019 chevrolet sonic order guide may 4 2018 copy gm authority, p.63.

This page aggregates every documented appearance of UW4 in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.