- 2015–2018 Factory-verified
SLT, Denali: A; includes UTR, UTV, UTU, door lock shields and glass-break sensors; the guides name it Enhanced Security Package; 2018 from GM's 2018 Yukon order guide
UTT Factory-verified
Also documented for CadillacChevrolet
Documented applications
- 2015–2017 Factory-verified
SLE: not available; SLT, Denali: A; includes UTR, UTV, UTU, door lock shields and glass-break sensors; the guides name it Enhanced Security Package
This page aggregates every documented appearance of UTT in the GMC reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.