- 2019, 2021–2022 Factory-verified
2021: Elevation, AT4, Denali: S; Elevation Standard: not offered
USS Factory-verified
Also described as USB charging-only ports, 2, rear of center console
Also documented for BuickCadillacChevrolet
Documented applications
- 2019–2020, 2022 Factory-verified
the 2020 list marks it not for the next new major program
- 2019 Factory-verified
all trims: S
- 2022–2023 Factory-verified
- 2022–2023 Factory-verified
This page aggregates every documented appearance of USS in the GMC reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.