- 2025–2027 Factory-verified
S on all trims
UE4 Factory-verified
Also described as Following Distance Indicator
Also documented for BuickCadillacChevroletHummerOldsmobilePontiac
Documented applications
- 2023–2027 Factory-verified
included in a package on all trims
- 2025 Factory-verified
- 2025 Factory-verified
- 2025–2027 Factory-verified
- 2025–2027 Factory-verified
Pro, SLE, SLT, AT4, AT4X, Denali, Denali Ultimate: included in the trim group
- 2019–2020, 2022–2026 Factory-verified
- 2022–2023 Factory-verified
- 2022–2023 Factory-verified
This page aggregates every documented appearance of UE4 in the GMC reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.