Lock control, side door, electric, automatic

Years 1982, 1986, 1998–99 Models 2 Factory citations 2

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Also described as Automatic power door locks

Also documented for Chevrolet Oldsmobile Pontiac

Documented applications

Century — A-body (1982–1996)

1982, 1986 Single-source

LeSabre — H-body (1992–1999)

1998–1999 Factory-verified

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

This page aggregates every documented appearance of AU4 in the Buick reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.