- 2018–2019 Factory-verified
SLE-2 with the All Terrain (GAT)
Also described as Interior, Jet Black, premium cloth, All TerrainInterior trim, cloth, Jet BlackInterior trim, Jet Black, clothInterior trim, Jet Black, cloth seating surfacesInterior, Jet Black, cloth
Also documented for Chevrolet
Documented applications
- 2015–2017, 2019, 2021–2022 Factory-verified
2015–2016 guides: SLE trim; the upfitter lists read level 2; 2021 from the upfitter list GM files for 2021 and 2022
- 2015, 2018–2019 Factory-verified
SLE (3SA) split-bench (AZ3) and bucket seats (A95); 2018: GM's 2018 Sierra 2500HD order guide; 2019: GM's 2019 Sierra 3500HD order guide
- 2025–2027 Factory-verified
Pro (1SA) and SLE (3SA); bench seat AZ3, and bucket seats A50 on SLE; the name matches the GM Authority 2026 Sierra HD interior colors page
- 2014, 2016–2019 Factory-verified
SLE (3SA), with the 40/20/40 bench (AZ3) or cloth buckets (A95).
- 2019–2020, 2022–2026 Factory-verified
- 2015–2018 Factory-verified
SLE; the lists read cloth, level 2; 2018 from GM's 2018 Yukon order guide
- 2022–2023 Factory-verified
- 2015–2017 Factory-verified
SLE (A95 or AZ3 seats)
- 2022–2023 Factory-verified
This page aggregates every documented appearance of H0U in the GMC reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.