Bosch Fuel Injector Pigtail
Hard To Find Connector For All LLY/LBZ Duramax Fuel Injectors. Made With OEM Bosch Connectors, JPT Terminals, And 16″ Of 16 Gauge GXL Wire
04.5-07 6.6L LLY LBZ Duramax
Sooner or later, most 2004.5+ LLY LBZ Duramax’s will experience the dreaded “injector harness problem”. GM routed the fuel injector wiring harnesses very tight on these engines, which can result in premature wire fatigue and connector-pin failure and/or intermittent loose connections at the fuel injector connector. When this happens, the ECM puts the engine into “limp mode” and shuts off half of the cylinders, resulting in an engine that sounds like it is about to scatter its parts all over the highway! Usually this will set “injector drive circuit” codes and/or misfire codes.
The common “ice pick fix” is a good trick to get you home, but generally it is not a good permanent repair solution, as the harness/connector/pins will eventually loosen up again.