- 2027 Factory-verified
only in: LYRIQ-V Premium; Dark Ash wood trim with backlit door accents, included with and only available with the Nappa leather package (PCH); GM Authority corroborates the code
HKZ Factory-verified
Documented applications
This page aggregates every documented appearance of HKZ in the Cadillac reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.