From 2007 to 2013, the company assembled the 6.0-liter V8 GM LFA or Vortec 6000 Hybrid, which was used in hybrid versions of vehicles like the Cadillac Escalade, Chevrolet Tahoe, and GMC Yukon. A phase regulator, an AFM system, and a new LZ1 index were added to the engine a year after production began.
LR4, LM7, LY2, LY5, LFA, L92, and L86 are the Vortec line.
Specifications
| Production years | 2007-2013 |
| Displacement, cc | 5972 |
| Fuel system | distributed injection |
| Power output, hp | 332 (379 together with electric motor) |
| Torque output, Nm | 498 |
| Cylinder block | aluminum V8 |
| Block head | aluminum 16v |
| Cylinder bore, mm | 101.6 |
| Piston stroke, mm | 92 |
| Compression ratio | 10.8 |
| Features | OHV |
| Hydraulic lifters | yes |
| Timing drive | chain |
| Phase regulator | since 2009 |
| 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 Escalade Hybrid 2010) — city — highway — combined |
12.4 10.5 11.2 |
| Engine lifespan, km | ~400 000 |
The engine was installed on:
- Cadillac Escalade 3 (GMT926) in 2008 – 2013;
- Chevrolet Silverado 2 (GMT901) in 2008 – 2013;
- Chevrolet Tahoe 3 (GMT921) in 2007 – 2013;
- GMC Sierra 3 (GMT902) in 2008 – 2013;
- GMC Yukon 3 (GMT922) in 2007 – 2013;
- GMC Yukon XL 3 (GMT932) in 2007 – 2013.
Disadvantages of the GM LFA engine
Keep an eye on the radiator and pump’s condition because overheating causes a lot of issues here;
Because of fuel pump failure or throttle contamination, engine speed frequently floats;
This unit’s tripling is typically caused by one of the ignition coils cracking;
Saving oil is not a good idea because it will cause the camshaft liners to wear down quickly;
The exhaust manifold bolts are frequently unscrewed, and the thermal casing frequently comes off.