- 2017–2018 Factory-verified
2017: 2LT; 2018: ACTIV, 2LT; high-back front buckets (AV5); 2018 from GM's 2018 order guide
HH5 Factory-verified
Documented applications
This page aggregates every documented appearance of HH5 in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.