From 1999 until 2007, the company produced the GM LM7 or Vortec 5300 5.3-liter V8 engine, which was installed on SUVs and pickup trucks built on the GMT800 platform, including the Tahoe, Yukon, and Silverado. A Flexible-fuel version of this power unit is available under its own index, L59.
LR4, LM7, LY2, LY5, LFA, L92, and L86 are the Vortec line.
Specifications
| Production years | 1999-2007 |
| Displacement, cc | 5327 |
| Fuel system | distributed injection |
| Power output, hp | 270 – 300 |
| Torque output, Nm | 425 – 455 |
| Cylinder block | aluminum V8 |
| Block head | aluminum 16v |
| Cylinder bore, mm | 96 |
| Piston stroke, mm | 92 |
| Compression ratio | 9.5 |
| Features | OHV |
| Hydraulic lifters | yes |
| Timing drive | chain |
| Phase regulator | yes |
| Turbocharging | no |
| Recommended engine oil | 5W-30 |
| Engine oil capacity, liter | 5.7 |
| Fuel type | petrol |
| Euro standards | EURO 2 |
| Fuel consumption, L/100 km (for Chevrolet Tahoe 2000) — city — highway — combined |
17.9 10.1 13.0 |
| Engine lifespan, km | ~500 000 |
The engine was installed on:
- Cadillac Escalade 2 (GMT820) in 2001 – 2006;
- Chevrolet Avalanche 1 (GMT805) in 2001 – 2006;
- Chevrolet Express 2 (GMT610) in 2003 – 2007;
- Chevrolet Silverado 1 (GMT800) in 1998 – 2007;
- Chevrolet Suburban 9 (GMT830) in 1999 – 2006;
- Chevrolet Tahoe 2 (GMT820) in 1999 – 2006;
- GMC Savana 2 (GMT610) in 2003 – 2007;
- GMC Sierra 2 (GMT800) in 1998 – 2007;
- GMC Yukon 2 (GMT820) in 1999 – 2006;
- GMC Yukon XL 2 (GMT830) in 1999 – 2006.
Disadvantages of the GM LM7 engine
Many overheating-related engine issues, keep an eye on the radiator and pump’s condition;
Leaks occur when plastic pipes and tees crack due to overheating;
A poor oil selection causes the camshaft liners to wear down quickly;
This engine’s adsorber, ignition coils, and fuel pump are also weak points.