- 2025–2026 Factory-verified
all trims: S
HS1 Factory-verified
Also described as Safety alert seat
Also documented for BuickChevroletGMC
Documented applications
- 2023, 2025–2026 Factory-verified
Premium Luxury, Sport: S; V-Series, V-Series Blackwing: S
- 2025–2027 Factory-verified
- 2023, 2025–2027 Factory-verified
2027: S on all trims
- 2023, 2025–2027 Factory-verified
all trims: S; Professional Vehicle (S)
- 2025–2027 Factory-verified
- 2026–2027 Factory-verified
all trims: S
- 2025 Factory-verified
Premium Luxury, Sport: S
- 2025–2026 Factory-verified
all trims: S
- 2025 Factory-verified
All trims: S
This page aggregates every documented appearance of HS1 in the Cadillac reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.