Repair & Services
in Manchester, MD

Duramax diesel engines have earned a reputation for power, performance, and reliability. They are popular choices for heavy-duty trucks, other commercial vehicles, and personal use. At Ranglin’s Complete AutoCare, we specialize in providing top-quality Duramax repair and maintenance services to keep your engine running at peak performance.

A close up of a Duramax trademark of a black 2020 GMC Sierra pickup truck.

Duramax Engines: A Short Background

A Duramax engine is a line of diesel engines designed and manufactured by General Motors and Isuzu.

These engines are known for their high performance and reliability, making them a popular for pickup trucks and other heavy-duty vehicles, such as the Chevrolet Silverado and GMC Sierra. These engines are also in various other GM vehicles, including vans and SUVs.

The first generation of Duramax engines, introduced in 2001, was known as the LB7. This engine had a displacement of 6.6 liters and was rated at 235 horsepower and 500 lb-ft of torque.

The second generation, introduced in 2004, was known as the LLY. This engine featured improved injectors and a variable geometry turbocharger, which helped to boost its output to 310 horsepower and 605 lb-ft of torque.

In 2006, General Motors introduced the LBZ, which was an upgraded version of the LLY engine. This engine featured several improvements, including a larger turbocharger and a stronger block, which allowed it to produce up to 360 horsepower and 650 lb-ft of torque.

The LMM Duramax engine was introduced in 2007 and featured a diesel particulate filter (DPF) to meet new emissions regulations. This engine produced up to 365 horsepower and 660 lb-ft of torque.

The current generation of Duramax engines, introduced in 2011, is the LML. This engine features several improvements over previous generations, including an even stronger block and cylinder heads, improved injectors, and a more efficient turbocharger. The LML engine produces up to 397 horsepower and 765 lb-ft of torque.

Common Issues with Duramax Engines

Like any engine, Duramax engines can experience issues over time. Some common problems include:

  • Fuel injector problems: The fuel injectors on Duramax engines can become clogged or damaged, leading to issues with fuel delivery and engine performance.
  • Turbocharger failure: The turbocharger on Duramax engines can fail due to issues with the bearings or other components, resulting in decreased power and performance.
  • EGR valve issues: The EGR valve on Duramax engines can become clogged or fail, causing problems with emissions and engine performance.
  • Glow plug problems: The glow plugs on Duramax engines can fail, leading to difficulty starting the engine, especially in cold weather.

Duramax Services at Ranglin's Complete AutoCare

At Ranglin’s Complete AutoCare, our expert Duramax mechanics have the knowledge and experience to diagnose and repair the above issues and other problems hounding Duramax engines. We offer a full range of Duramax services, including:

Regular maintenance and prompt repairs are essential to keep your engine running efficiently and reliably. If you notice any issues with your engine, it is best to have it diagnosed and repaired by a qualified mechanic as soon as possible.

Trust Ranglin's Complete AutoCare for Your Duramax Engine Needs

At Ranglin’s Complete AutoCare, we are committed to providing our customers with top-quality Duramax engine maintenance services. Our experienced technicians use the latest diagnostic tools and techniques to diagnose and repair any issues with your engine accurately. We only use high-quality parts and components for our repairs and maintenance services. 

Contact us today to schedule your Duramax engine service or to learn more about our services. Call us at (667) 314 3910 or visit our diesel repair shop at 3037 Main Street, Manchester, MD 21102.

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