- 2015–2017, 2019, 2021–2022 Factory-verified
2015–2016: Canyon, SLE, SLT: O; SL: not offered; 2021 from the upfitter list GM files for 2021 and 2022
5Y4 Factory-verified
Also documented for CadillacChevrolet
Documented applications
This page aggregates every documented appearance of 5Y4 in the GMC reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.