5.3L Vortec V8 engine

  • 320 hp @ 5400 rpm
  • 335 lb-ft of torque @ 4000 rpm
  • E85 capable1
  • Active Fuel Management improves fuel economy by deactivating half of the engine's cylinders when the power isn't needed
  • Variable-Valve Timing
  • Sequential Fuel Injection
  • Iron block
  • Backed by 5-year/100,000 mile Powertrain Warranty2

This engine requires 2WD models.

1 E85 is a blend of 85% ethanol and 15% gasoline. Go to www.gmc.com and search E85 as an alternative fuel.
2 Whichever comes first. See dealer for limited warranty details