Player, multiple compact disc

Years 1998–05 Models 3 Factory citations 6

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Also documented for Cadillac Chevrolet GMC Oldsmobile Pontiac Saturn

Documented applications

LeSabre — H-body (2000–2005)

2000–2002 Factory-verified

GM factory document — 2000 buick lesabre rpo code list, p.1.
GM factory document — 2002 buick lesabre rpo code list, p.1.

Park Avenue — G-body (1997–2005)

1998–2005 Factory-verified

GM factory document — 1998 buick park avenue rpo code list, p.1.
GM factory document — 2005 buick park avenue rpo code list, p.1.

Riviera — G-body (1995–1999)

1998–1999 Factory-verified

GM factory document — 1998 buick riviera rpo code list, p.1.
GM factory document — 1999 buick riviera rpo code list, p.1.

This page aggregates every documented appearance of U1S in the Buick reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.