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1997 GMC K3500 dually 4L80 4x4
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I have seen a lot of bad injector connectors, but that wouldn't usually give you a no start. Any idm dtcs? The injectors are on pairs of transformers, one bad circuit kills two injectors. I usually see the harness bad where it bends around the Fuel Injector Driver just before the connector. Good luck.
 
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