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What vehicles use the Duramax Engine

  • Chevrolet Silverado: The Duramax engine has been an option for Chevrolet Silverado heavy-duty trucks, such as the Silverado 2500HD and Silverado 3500HD.

  • GMC Sierra: Similar to the Silverado, the Duramax engine has been available in GMC Sierra heavy-duty trucks, including the Sierra 2500HD and Sierra 3500HD.

  • Chevrolet Express: The Duramax engine has been used in Chevrolet Express full-size vans, making them popular for commercial and fleet applications.

  • GMC Savana: Similar to the Chevrolet Express, the Duramax engine has been available in GMC Savana full-size vans for commercial use.

  • Chevrolet Colorado: The Duramax engine has been offered as an option in the mid-size Chevrolet Colorado pickup truck, providing a diesel powertrain choice in the mid-size truck segment.

  • GMC Canyon: Like the Chevrolet Colorado, the GMC Canyon mid-size pickup truck has also been available with the Duramax diesel engine.

  • Chevrolet Silverado 1500: In recent years, GM introduced a smaller, inline-six Duramax diesel engine option for the Chevrolet Silverado 1500, offering improved fuel efficiency and torque.

  • GMC Sierra 1500: Similarly, the GMC Sierra 1500 has also been available with the smaller Duramax diesel engine.

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Common Duramax Engine Problems

  1. Glow Plugs: Keep an eye on glow plug issues, especially if you own a 2006 model, as both the 2006 LLY and LBZ models are known for their glow plug problems.

  2. Injectors: Injector problems can lead to difficulties starting, rough idling, misfiring, and poor fuel efficiency. Particularly, some 2001 to 2004 Duramax models, like the LB7, are prone to injector issues.

  3. Fuel System: Look out for starting problems, excessive smoke, poor fuel economy, and loss of engine power, as the Duramax’s fuel system can have issues related to fuel filter housing and air getting into the fuel lines.

  4. Water Pump: Duramax engines may require water pump replacement around 80,000 miles, so watch for signs of overheating, coolant leaks, corrosion on the water pump, and whining noises from the front of the engine.

  5. Fan Clutch: In models from 2005 and earlier, Duramax had problems with fan clutches, which can result in engine overheating.

  6. Oil: Be aware of oil leaks into the turbocharger due to a faulty PCV design, which can lead to more serious engine problems.

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