Primary color, exterior, Marblehead Gray Metallic

Years 1998–99 Models 3 Factory citations 5

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Also documented for Chevrolet Oldsmobile Pontiac

Documented applications

Century — W-body (1997–2005)

1998–1999 Factory-verified

the 1998 list prints O3U (letter O); 03U in the 1999 list and in GM's other lists with the same wording; GM prints "(96)"

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

Regal — W-body (1997–2004)

1998–1999 Factory-verified

the 1998 list prints O3U (letter O); 03U in the 1999 list and in GM's other lists with the same wording; GM prints "(96)"

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

Skylark — N-body (1992–1998)

1998 Factory-verified

GM prints "(95)".

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

This page aggregates every documented appearance of 03U in the Buick reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.