Vacuum Operated Door Locks

Years 1963–79 Models 2 Factory citations 2

Also described as Vacuum door locks

Documented applications

Chevelle / El Camino

1969 Factory-verified

GM Heritage factory kit — 1969 Chevrolet Chevelle, p.72.
GM Heritage factory kit — 1969 Chevrolet El Camino, p.56.

Impala / Full-Size

1963–70s (varies) Confirmed

This page aggregates every documented appearance of A93 in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.