Speaker system, performance-enhanced audio

Years 1998–09, 2018–19, 2025–27 Models 8 Factory citations 32

Also described as Audio system feature, 6-speaker system, enhanced performanceAudio system feature, premium 6-speaker systemSpeaker system, enhanced audioAudio system feature, enhanced speaker systemSpeaker system, performance enhanced audio

Also documented for Cadillac Chevrolet GMC Hummer Oldsmobile Pontiac Saturn

Documented applications

Century — W-body (1997–2005)

1998–2004 Factory-verified

twin list is word for word the Regal's; may be Regal equipment

GM factory document — 1998 buick century rpo code list, p.1.
GM factory document — 1999 buick century rpo code list, p.1.
GM factory document — 2000 buick century rpo code list, p.1.
GM factory document — 2001 buick century rpo code list, p.1.
GM factory document — 2002 buick century rpo code list, p.1.
GM factory document — 2003 buick century rpo code list, p.1.
GM factory document — 2004 buick century rpo code list, p.1.

Encore GX — VSS-F (2020–2027)

2025–2027 Factory-verified

only in: FWD; Preferred, Sport Touring, Avenir: S

GM factory document — 2025 buick encore gx fleet order guide, p.1.
GM factory document — 2026 buick encore gx fleet order guide, p.1.
GM factory document — 2027 buick encore gx fleet order guide, p.1.

Envista — VSS-F (2024–2027)

2025–2026 Factory-verified

all trims: S

GM factory document — 2025 buick envista fleet order guide rpo codes, p.1.
GM factory document — 2025 buick envista fleet order guide, p.1.
GM factory document — 2026 buick envista fleet order guide rpo codes, p.1.
GM factory document — 2026 buick envista fleet order guide, p.1.

Lucerne — G-body (2006–2011)

2006–2009 Factory-verified

GM factory document — 2006 buick lucerne rpo code list, p.1.
GM factory document — 2009 buick lucerne rpo code list, p.1.

Regal — E2XX (2018–2020)

2018–2019 Factory-verified

2019: Preferred II, Essence, GS: S (2019 Sportback order guide); the 2019 guide reads enhanced 7-speaker system with active noise cancellation, AWD models only

GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
GM factory document — 2019 buick regal sportback order guide copy gm authority, p.2.

Regal — W-body (1997–2004)

1998–2004 Factory-verified

GM factory document — 1998 buick regal rpo code list, p.1.
GM factory document — 1999 buick regal rpo code list, p.1.
GM factory document — 2000 buick regal rpo code list, p.1.
GM factory document — 2001 buick regal rpo code list, p.1.
GM factory document — 2002 buick regal rpo code list, p.1.
GM factory document — 2003 buick regal rpo code list, p.1.
GM factory document — 2004 buick regal rpo code list, p.1.

Rendezvous — U-body / GMT257 (2002–2007)

2002–2007 Factory-verified

The 2006 and 2007 lists read "Enhanced Audio".

GM factory document — 2002 buick rendezvous awd rpo code list, p.1.
GM factory document — 2006 buick rendezvous awd rpo code list, p.1.
GM factory document — 2007 buick rendezvous fwd rpo code list, p.1.

Terraza — U-body / GMT201 (2005–2007)

2005–2007 Factory-verified

the 2005 list reads Performance Enhanced Audio

GM factory document — 2005 buick terraza rpo code list, p.1.
GM factory document — 2006 buick terraza rpo code list, p.1.
GM factory document — 2007 buick terraza rpo code list, p.1.

This page aggregates every documented appearance of UQ3 in the Buick reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.