Door locks, single key, entire fleet keyed alike

Years 1983, 2017 Models 2 Factory citations 2

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Also described as Roof wiring equipment

Documented applications

Caprice — Caprice PPV (2011–2017)

2017 Factory-verified

A; not with 6E3, whose key code differs

GM factory document — 2017 chevrolet caprice ppv order guide copy gm authority, p.5, p.9.

Malibu — fourth generation, A-body (1983)

1983 Factory-verified

special equipment option (SEO); one of two roof wiring codes on the page (with 6E5, at a different price); the page does not show how the two differ

GM Heritage factory kit — 1983 Chevrolet Malibu, p.15.

This page aggregates every documented appearance of 6E4 in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.