Radio, AM/FM stereo, seek/scan, auto reverse music search cassette, CD, auto tone, clock, ETR, Bose

Years 2001–02 Models 5 Factory citations 17

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Also described as Radio, AM/FM stereo, cassette and CD, auto tone control, clock, Bose

Also documented for Cadillac GMC

Documented applications

Avalanche — GMT800 (2002–2006)

2002 Factory-verified

GM factory document — 2002 chevrolet avalanche 2wd rpo code list, p.1.
GM Heritage factory kit — 2002 Chevrolet Avalanche, p.56.

Silverado — GMT800 (1999–2007)

2001–2002 Factory-verified

GM factory document — 2001 chevrolet chevy c silverado 2wd rpo code list, p.1.
GM factory document — 2002 chevrolet chevy c silverado 2wd rpo code list, p.1.
GM Heritage factory kit — 2001 Chevrolet Silverado, p.57.
GM Heritage factory kit — 2002 Chevrolet Silverado, p.47.

Silverado HD — GMT800 (2001–2007)

2001, 2002 Factory-verified

GM factory document — 2001 chevrolet chevy c silverado 2wd rpo code list, p.1.
GM factory document — 2002 chevrolet chevy c silverado 2wd rpo code list, p.1.
GM Heritage factory kit — 2001 Chevrolet Silverado HD, p.63.
GM Heritage factory kit — 2002 Chevrolet Silverado HD, p.42.

Suburban — GMT800 (2000–2006)

2001–2002 Factory-verified

GM factory document — 2001 chevrolet chevy suburban 2wd rpo code list, p.1.
GM factory document — 2002 chevrolet chevy suburban 2wd rpo code list, p.1.
GM Heritage factory kit — 2001 Chevrolet Suburban, p.52.
GM Heritage factory kit — 2002 Chevrolet Suburban, p.39.

Tahoe — GMT800 (2000–2006)

2001–2002 Factory-verified

GM factory document — 2001 chevrolet tahoe 2wd rpo code list, p.1.
GM factory document — 2002 chevrolet tahoe 2wd rpo code list, p.1.
GM Heritage factory kit — 2002 Chevrolet Tahoe, p.32.

This page aggregates every documented appearance of UL9 in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.