- 2019, 2021–2022 Factory-verified
2021: Elevation Standard, Elevation, AT4: S; Denali: not offered
UST Factory-verified
Also described as USB data ports, 2, auxiliary input jack, front console
Also documented for BuickChevrolet
Documented applications
- 2019 Factory-verified
SL, SLE, SLE Diesel: S
This page aggregates every documented appearance of UST in the GMC reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.