- 2018–2019 Factory-verified
2019: Preferred, Preferred II: S (2019 Sportback order guide); the 2018 list reads 4-way manual, and the 2019 guide counts recline as extra ways
AG6 Factory-verified
Also documented for ChevroletGMCPontiac
Documented applications
This page aggregates every documented appearance of AG6 in the Buick reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.