The 3.7-liter General Motors LLR engine was assembled at a plant in America from 2006 to 2012 and installed on GMT345 / 355 platform models such as the Chevrolet Colorado and Hummer H3. This inline 5-cylinder engine is distinguished by enviable reliability, but its consumption is high.
The Atlas family: LLV, LLR, LL8.
Specifications
| Production years | 2006-2012 |
| Displacement, cc | 3653 |
| Fuel system | distributed injection |
| Power output, hp | 242 |
| Torque output, Nm | 328 |
| Cylinder block | aluminum R5 |
| Block head | aluminum 20v |
| Cylinder bore, mm | 95.5 |
| Piston stroke, mm | 102 |
| Compression ratio | 10.0 |
| Features | DOHC |
| Hydraulic lifters | yes |
| Timing drive | chain |
| Phase regulator | at the exhaust |
| Turbocharging | no |
| Recommended engine oil | 5W-30 |
| Engine oil capacity, liter | 5.7 |
| Fuel type | petrol |
| Euro standards | EURO 3 |
| Fuel consumption, L/100 km (for Hummer H3 2007) — city — highway — combined |
15.7 12.4 13.8 |
| Engine lifespan, km | ~400 000 |
| Weight, kg | 191 |
The engine was installed on:
- Chevrolet Colorado 1 (GMT355) in 2006 – 2012;
- GMC Canyon 1 (GMT355) in 2006 – 2012;
- Hummer H3 (GMT345) in 2006 – 2010.
Disadvantages of the GM LLR engine
- This is a completely reliable and resource unit, but its consumption is not the smallest.
- At high mileage, valve seat wear and chain stretch are common.
- Many complaints are related to the low resource of the water pump and viscous fan coupling.
- It is important to monitor their condition, as aluminum motors do not tolerate overheating.
- And here the rear crankshaft oil seal often flows and the exhaust manifold bursts.
