Seat, rear center, folding

Years 1998–99 Models 2 Factory citations 4

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Also documented for Cadillac Chevrolet GMC Oldsmobile Pontiac

Documented applications

Century — W-body (1997–2005)

1998–1999 Factory-verified

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

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

This page aggregates every documented appearance of AT5 in the Buick reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.