- 2017–2019 Factory-verified
2019: Avenir: S; Sport Touring, Essence, Premium: O; with WPB
DB3 Factory-verified
Also described as Sunshade, power, rear
Also documented for Cadillac
Documented applications
- 2015 Factory-verified
2015: 1SP, 1SR: S; part of PCK
This page aggregates every documented appearance of DB3 in the Buick reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.