The Cadillac CTS, STS, Chevrolet Traverse, Buick Enclave, and GMC Acadia crossovers were equipped with the 3.6-liter V6 General Motors LLT engine, which was manufactured in the US and Canada between 2007 and 2017. In essence, this power unit is a direct fuel injection version of the LY7 engine.
L3B, LP9, LF1, LFX, LFY, LGX, LLT, and LY7 are the high feature engine family.
Specifications
| Production years | 2007-2017 |
| Displacement, cc | 3564 |
| Fuel system | direct injection |
| Power output, hp | 280 – 315 |
| Torque output, Nm | 350 – 380 |
| Cylinder block | aluminum V6 |
| Block head | aluminum 24v |
| Cylinder bore, mm | 94 |
| Piston stroke, mm | 85.6 |
| Compression ratio | 11.3 |
| 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 4/5 |
| Fuel consumption, L/100 km (for Cadillac CTS 2010) — city — highway — combined |
16.6 8.7 11.6 |
| Engine lifespan, km | ~280 000 |
| Weight, kg | 180 |
The engine was installed on:
- Buick Enclave 1 (GMT967) in 2008 – 2017;
- Buick LaCrosse 2 (GMX353) in 2009 – 2011;
- Cadillac CTS II (GMX322) in 2007 – 2011;
- Cadillac STS I (GMX295) in 2007 – 2011;
- Chevrolet Camaro 5 (GMX521) in 2009 – 2011;
- Chevrolet Traverse 1 (GMT561) in 2008 – 2017;
- GMC Acadia 1 (GMT968) in 2008 – 2016;
- Saturn Outlook 1 (GMT966) in 2008 – 2010.
Disadvantages of the GM LLT engine
Although this motor is entirely dependable, its timing chain has a limited resource;
This is particularly true for the first-year units, whose chain extended up to 100,000 kilometers;
Additionally, a capricious direct fuel injection system can cause a lot of problems;
It is vulnerable to valve deposits, just like all direct injection engines;
Keep an eye on the cooling system’s condition: the pump doesn’t run for very long, and radiators are leaking.