GM then introduced the Duramax LBZ for the 2006 – 2007 Chevrolet Silverado HD, Chevrolet Kodiak, Chevrolet Express, GMC Sierra, GMC Topkick, and GMC Savanna. It came in the Chevrolet Silverado, Hummer H1 Alpha, and the GMC Sierra until 2005. The Duramax LLY took over from the LB7 in 2004.
It was the simplest in the lineup because it did not have a diesel particulate filter (DPF) or exhaust gas recirculation (EGR). The first engine was the 6.6L Duramax LB7 used in the 2001 – 2004 Chevrolet Kodiak, Chevrolet Silverado, GMC Topkick, and GMC Sierra HD. In short, the newer model years show improved performance. Quick Answer: Avoid Duramax Year Models 2001-2010 This information is based on the number of complaints filed by users concerning the different model years. In this post, we’ll tell you which Duramax years to avoid and which one to go for if you’re looking to buy a used Chevy or GMC truck. Over the years, the engine has gone through several upgrades and improvements to ensure GMC and Chevrolet pickup trucks perform better than their competition. It proved to be a powerful and great contender in the light diesel market. The Duramax debuted in 2001 as the successor to the 6.2L and 6.5L Detroit engines.
The Duramax V8 engine is a 6.6-liter Diesel engine produced by DMAX, a combined effort between General Motors and Isuzu.
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