The 3.6-liter V6 General Motors LY7 engine was assembled at the concern’s factory from 2003 to 2012 and was installed on the Cadillac STS, GMC Acadia, Chevrolet Malibu or Suzuki XL-7 under the N36A index. On the Holden model, a simplified modification of the LE0 was installed with phase regulators only at the intake.
High Feature engine family: L3B, LP9, LF1, LFX, LFY, LGX, LLT, LY7.
Specifications
| Production years | 2003-2012 |
| Displacement, cc | 3564 |
| Fuel system | direct injection |
| Power output, hp | 240 – 275 |
| Torque output, Nm | 305 – 345 |
| Cylinder block | aluminum V6 |
| Block head | aluminum 24v |
| Cylinder bore, mm | 94 |
| Piston stroke, mm | 85.6 |
| Compression ratio | 10.2 |
| Features | DOHC |
| Hydraulic lifters | yes |
| Timing drive | chain |
| Phase regulator | Dual VVT |
| Turbocharging | no |
| Recommended engine oil | 5W-30 |
| Engine oil capacity, liter | 5.7 |
| Fuel type | petrol |
| Euro standards | EURO 4 |
| Fuel consumption, L/100 km (for Cadillac STS 2005) — city — highway — combined |
17.7 9.4 12.4 |
| Engine lifespan, km | ~280 000 |
| Weight, kg | 185 |
The engine was installed on:
- Buick Enclave 1 (GMT967) in 2007 – 2008;
- Buick LaCrosse 1 (GMX365) in 2004 – 2008;
- Buick Rendezvous 1 (GMT257) in 2004 – 2007;
- Cadillac CTS I (GMX320) in 2004 – 2007; CTS II (GMX322) in 2007 – 2009;
- Cadillac SRX I (GMT265) in 2003 – 2010;
- Cadillac STS I (GMX295) in 2004 – 2007;
- Chevrolet Equinox 1 (GMT191) in 2007 – 2009;
- Chevrolet Malibu 7 (GMX386) in 2007 – 2012;
- GMC Acadia 1 (GMT968) in 2006 – 2008;
- Pontiac G6 1 (GMX381) in 2007 – 2009;
- Pontiac G8 1 (GMX557) in 2007 – 2009;
- Pontiac Torrent 1 (GMT191) in 2007 – 2009;
- Saturn Aura 1 (GMX354) in 2006 – 2009;
- Saturn Outlook 1 (GMT966) in 2006 – 2008;
- Saturn Vue 2 (GMT319) in 2007 – 2009;
- Suzuki XL-7 2 (GMT193) in 2006 – 2009.
Disadvantages of the GM LY7 engine
- The main problem of this power unit is considered to be a low resource of timing chains;
- They can stretch up to 100,000 km, and replacing them is quite complicated and expensive;
- When replacing chains, it is easy to ruin the front cover, but it is very expensive;
- The motors of this series are very afraid of overheating, and the radiators, as luck would have it, leak regularly;
- Weaknesses also include a short-lived pump and a capricious control unit.
