6.6L DURAMAX Diesel Engine Warranty
For trucks equipped with the 6.6L Duramax Diesel engine, the complete engine assembly — including turbocharger components — is covered for defects in the material or workmanship for 3 years or 36,000 miles, whichever comes first.

These engine parts continue to be covered for 5 years or 100,000 miles, whichever comes first:

• Cylinder block and heads and all internal parts
• Intake and exhaust manifolds
• Timing gears
• Timing gear chain or belt and cover
• Flywheel
• Harmonic balancer
• Valve covers
• Oil pan
• Oil pump, water pump and fuel pump
• Engine mounts, seals and gaskets
• Diesel Fuel Metering System: injection pump, nozzles, high-pressure lines and high-pressure sealing devices
• Glow Plug Control System: control/glow plug assembly, glow plugs, cold advance relay and ECM
• Fuel injection control module, integral oil cooler, transmission adapter plate, left and right common fuel rails, fuel filter assembly, fuel temperature sensor and function block