On the plus side, the LLY featured the largest turbo offered on any Duramax engine, and it utilizes variable geometry technology for optimum spool up, mid-range and top-end power. Go to newsstand. The Duramax became more complicated for to meet even stricter emissions. Fuel economy suffered severely, caused by the adoption of a diesel particulate filter and active regeneration. Rather, the high pressure fuel pump injection pump is responsible for vacuuming fuel from the tank.
Common problems typically associated with the L Duramax, ranging from LB7 injector issues to LML NOx sensor failures, fuel starvation and priming.
Duramax Buyer's Guide How to Pick the Best GM Diesel DrivingLine
How to buy a used Duramax, including the common problems associated with certain model years and the - GMC Sierra, Chevrolet Silverado. Find out which of the late-model GMC and Chevy trucks is the one to have.
and the pre-emissions versions ( to ) are highly sought after. Instead, this generation Duramax is known for overheating issues, namely.
Some owners have also suggested that turning the engine off and cycling the key to the on position several times will take the transmission out of limp mode. Horsepower and torque peaked for the LB7 ingenerating hp and lb-ft.
Commons L Duramax Problems & Concerns
Common-Rail Cummins. However, like any engine or any complex mechanism for that matterthe Duramax engine and Allison transmission have some common problems inherent to their design.
Video: 2007 gmc duramax issues THE DURAMAX ISSUES CONTINUE...
The goal of this engine was to meet strict emissions regulations, while offering up a small performance increase as collateral. The associated trouble codes will usually reveal which injector s are affected and will relate to an "open circuit" condition.
bought a 07 silverado classic crewcab, have miles on it, fuel milage has seemed to be mpg at 65 mph right since new, have.
If you have a Duramax LB7 diesel pickup or are looking to buy one, here are some common issues and problems we have run.
GM identified the problem and has reprogrammed the glow plug module to eliminate this risk.
When the Allison transmission senses an abnormal amount of slip in the transmission, it enters limp mode.
Rather, the high pressure fuel pump injection pump is responsible for vacuuming fuel from the tank. Some owners have also suggested that turning the engine off and cycling the key to the on position several times will take the transmission out of limp mode.
Duramax Buyers Guide
In addition, high-mile versions are prone to popping head gaskets. Go to newsstand.