What does LLY stand for on Duramax?
What does LLY stand for on Duramax?
LLY doesnt stand for anything specific, its just the RPO (regular production order) code that means “Duramax diesel engine”.
Are there any problems with the LLY Duramax?
LLY Duramax trucks don’t suffer from the same injector failure problems that LB7 trucks frequently had. Instead, many LLY Duramax problems stem from overheating. A new variable vane turbocharger and an EGR system were also added. Check out our LLY Duramax Specifications chart below for detailed information!
When did the Duramax LLY diesel engine come out?
Ways to identify this engine: The Duramax LLY was introduced in 2004 to replace the popular LB7. Like the LB7, the LLY utilizes a high pressure common rail direct injection system. The LLY was General Motors’ first attemp at implementing emission controls on a diesel engine to meet stricter emissions requirements in the future.
How to identify your Duramax RPO code DMAX swap?
Ways to identify this engine: Nearly identical to the LBZ, the LMM debuted midway into the 2007 model year (2007.5). The slight variations between the LBZ and LMM gave the LMM a small boost in power output. The LMM features new emissions equipment that meet strict new diesel emission laws, and is currently in production today.
How to identify a Duramax engine by VIN number?
Duramax Engine ID by VIN Number. Many model years were crossover or transitional years for the Duramax diesel, thus it is often necessary to decipher the engine model/version using the vehicle’s VIN number. The chart below may be used to identify which Duramax engine your truck has based on the 8th digit of the vehicle identification number (VIN).
Ways to identify this engine: The Duramax LLY was introduced in 2004 to replace the popular LB7. Like the LB7, the LLY utilizes a high pressure common rail direct injection system. The LLY was General Motors’ first attemp at implementing emission controls on a diesel engine to meet stricter emissions requirements in the future.
Ways to identify this engine: Nearly identical to the LBZ, the LMM debuted midway into the 2007 model year (2007.5). The slight variations between the LBZ and LMM gave the LMM a small boost in power output. The LMM features new emissions equipment that meet strict new diesel emission laws, and is currently in production today.
What’s the compression ratio of a Duramax LLY?
A relatively high compression ratio when compared to later Duramax mills (17.5:1 vs. 16.8:1) and its use of a quick-lighting, low-rpm torque-producing variable geometry turbo makes the LLY rods slightly more susceptible to bending than the LB7’s.
Duramax Engine ID by VIN Number. Many model years were crossover or transitional years for the Duramax diesel, thus it is often necessary to decipher the engine model/version using the vehicle’s VIN number. The chart below may be used to identify which Duramax engine your truck has based on the 8th digit of the vehicle identification number (VIN).
