- 2025–2027 Factory-verified
Preferred, Sport Touring, Avenir: S
U25 Factory-verified
Also documented for ChevroletPontiac
Documented applications
- 2025–2026 Factory-verified
all trims: S
This page aggregates every documented appearance of U25 in the Buick reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.