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 the 100,000-mile/5-year Powertrain Warranty2.

Note: This engine requires 2WD 1/2-ton models.

1 E85 is a combination of 85% ethanol and 15% gasoline. Visit chevy.com/biofuels to see if there is an E85 fuel station near you.
2 Whichever comes first. See dealer for limited warranty details.