2003 gmc sierra 1500 obd2 wiring diagram. p0785 – shift/timing solenoid Wiring gmc Chevy and gmc truck/suv dead obd2 port quick fix
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OBD TEST problem - GM Forum - Buick, Cadillac, Olds, GMC & Pontiac chat
2003 Gmc Sierra 1500 Obd2 Wiring Diagram. p0785 – shift/timing solenoid