Chevy/GMC Truck and Duramax Turbo Diesel Forum Discussion of General Topics related to All Chevy and GMC Trucks as well as the Diesels in them

2005 LLY Limp mode, tractor sound

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Old Jan 15, 2023 | 07:16 PM
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From: Sonora, Ca
Default 2005 LLY Limp mode, tractor sound

PO201, PO202, PO203, PO204, PO205, PO206, PO207, PO208, P1246, P1249, P1293

My check engine light came on while driving, a couple of seconds later the engine died. It restarted, then made a terrible sound that some say is similar to a diesel tractor. Several months ago this truck went into limp mode for the first time ever. The problem turned out to be bad electrical connectors at the injectors #7 and I think #2. I got the connector repair kits, installed them, cleared the codes and it ran perfect. Any thoughts from the LLY experts?
 
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