- 2018–2019 Factory-verified
only in: Sportback; 2019: GS: S (2019 Sportback order guide); the 2019 guide reads thigh cushion extension
AHF Factory-verified
Also documented for Cadillac
Documented applications
This page aggregates every documented appearance of AHF in the Buick reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.