- 2025–2026 Factory-verified
Preferred, Sport Touring: not offered; Avenir: S; RRE in 2027 with the same wording
RUZ Factory-verified
Also documented for Cadillac
Documented applications
This page aggregates every documented appearance of RUZ in the Buick reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.