staff@slashgear.com (Prarthana Gopal)
2024-04-26 14:15:48
www.slashgear.com
The LMM Duramax, which was introduced in 2007, was not too different from the LBZ, save for the emissions control parts that were added to comply with the new regulations. This was a major cause of discontent among Duramax enthusiasts, given that it introduced reliability issues that weren’t as prevalent in previous-generation engines that didn’t feature emissions devices and also lowered the fuel economy.
Additionally, there were also issues with the pistons and crankshafts. While this might not be an issue for people driving vehicles with a stock version of the LMM engine, performing excessive modifications made the pistons and crankshaft more likely to snap. This was also an issue with the LBZ, but the LMM’s pistons and crankshafts are, unfortunately, more prone to cracking.
Another issue with the LMM engine was that the cooling lines were susceptible to leakages. In the event of a leak, the transmission system would overheat, and the inner components were likely to suffer significant damage. The easiest way to fix this issue is by changing the cooling lines to aftermarket lines. LMM engines also deal with excessive regeneration, which is a process by which the diesel particulate filter removes any accumulated particulate matter. Excessive regeneration can cause engine troubles, but these problems can be mitigated by using a fuel additive that reduces the buildup of particulate matter.