- 2022 Factory-verified
dealer-installed; 2022: all trims: O; the 2022 guide's footnote, added 3/28/2022, says it is no longer available to order; not in the 2023 guide
5ZB Factory-verified
Also documented for CadillacChevrolet
Documented applications
This page aggregates every documented appearance of 5ZB in the Buick reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.