- 2015–2019 Factory-verified
2015: Base, WT (2WT): S; WT (4WT), LT, Z71: not offered; extended cab with LCV only (2015 guide); GM Authority's 2019 Colorado page says it was dropped during the 2019 model year; 2018 from GM's 2018 Colorado order guide (PDF)
N8D Factory-verified
Also documented for GMC
Documented applications
This page aggregates every documented appearance of N8D in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.