- 2015, 2018, 2021 Factory-verified
2015: WT (2WT), LT (2LT), Z71 (2Z7): S; Base, WT (4WT), LT (4LT), Z71 (4Z7): not offered; 2018 from GM's 2018 Colorado order guide (PDF)
CH9 Factory-verified
Also documented for GMC
Documented applications
This page aggregates every documented appearance of CH9 in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.