- 2012 Factory-verified
2012: 1SG: within the group; 1SL: S (GM 2012 ordering guide); GM Authority's 2016 page says AG1 replaced it in PCM for 2016
ADS Factory-verified
Also documented for Chevrolet
Documented applications
This page aggregates every documented appearance of ADS in the Buick reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.