- 2015–2016 Factory-verified
2015: 1SB, 1SL FWD, 1SP FWD: O (dealer-installed); not with LUK; 2016: also on 1SR (GM Authority 2016 changes)
SEJ Factory-verified
Documented applications
This page aggregates every documented appearance of SEJ in the Buick reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.