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P1262 Diagnostic Trouble Code Discussion for November 2008

Injector Positive Control Circuit Malfunction - Group 2

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Trouble Ticket Help Requests for DTC P1262
Help Request Posted
2001 GMC Sierra 2500 HD SL 6.6L Misfire, MIL Lamp on VIN: 1GCHK23161
P1262: Injector Positive Control Circuit Malfunction - Group 2. Truck arrived to us after recently having all eight fuel injectors replaced by the local GM dealer. Further investigation indicated the injectors were replaced with customer-supplied 'rebuild' injectors. Upon our initial testing, technician isolated leakback i...
November 14, 2008