5.3L EcoTec3 V8 engine

The aluminum-block 5.3L EcoTec3 V8 engine with FlexFuel1 capability can run on unleaded gasoline or up to 85% ethanol blends. It features the latest engine technologies that help deliver confident power when needed and enhanced fuel efficiency at cruising speeds.

  • 355 hp 
  • 383 lb-ft of torque  
  • Active Fuel Management®
  • Direct Injection
  • Variable Valve Timing

1E85 is a blend of 85% ethanol and 15% gasoline. Go to www.gmc.com and search E85 for more information about E85 as an alternative fuel.