- 2024–2026 Factory-verified
only in: CT4; all trims: S; 2024 from GM Authority's 2024 CT4 specifications (RPO LSY and L3B listed)
LSY Factory-verified
Also described as Engine, 2.0L turbo, 4 cylinder, SIDI, automatic stop/startEngine, 2.0L 4 cylinder, twin-scroll turbo, SIDIEngine, 2.0L turbo, I4, SIDI, automatic stop/startEngine, 2.0L turbo, 4 cylinder, SIDIEngine, 2.0L turbo, 4 cylinder, spark ignition direct injection
Also documented for BuickChevroletGMC
Documented applications
- 2025–2026 Factory-verified
only in: CT5 (Premium Luxury, Sport); Premium Luxury, Sport: S
- 2019 Factory-verified
2019: Luxury 2.0L turbo RWD and Premium Luxury 2.0L turbo RWD: S (printed NEW!, SAE certification pending); replaces LTG in the 2019 guide; from the 2019 CT6 order guide (a GM document)
- 2025 Factory-verified
Premium Luxury, Sport: S; 235 hp at 5000 rpm, 258 lb-ft at 1500–4000 rpm
- 2025–2026 Factory-verified
Luxury, Premium Luxury: S; Sport: not available; GM Authority names this engine for the 2026 XT5
- 2025 Factory-verified
Luxury: S
This page aggregates every documented appearance of LSY in the Cadillac reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.