- 2025 Factory-verified
O on all trims
SD3 Factory-verified
Also described as LPO, foldable cargo organizer
Also documented for BuickCadillacChevrolet
Documented applications
- 2022–2023, 2025–2026 Factory-verified
2025: Elevation, AT4: O
- 2022–2023, 2025–2026 Factory-verified
2025: Elevation, AT4: O
This page aggregates every documented appearance of SD3 in the GMC reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.