5 / 6 ✓ Factory-verified

Cadillac · Regular Production Option

License plate frame — one / two

Years 1966 Models 1 Factory citations 1

Documented applications

DeVille / Calais →

• 1966 ✓ Factory-verified

  All

  ⛭ GM Heritage factory kit — 1966 Cadillac VVI, p.71.

This page aggregates every documented appearance of 5 / 6 in the Cadillac reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.