![]() AFTER COMPLETING THE STEPS ABOVE, IF YOU FIND NO POWER AT THE FUEL SYSTEM CONTROL MODULE, AT THE DARK GREEN/WHITE WIRE, MOVE TO THE POWERTRAIN CONTROL MODULE. wire/PCM integrity pass If any of the three conditions have been satisfied. *Important Green/white wire conditions*Ĭheck for one of the following three conditions. IF THE POWERTRAIN CONTROL MODULE IS SENDING THE SIGNAL TO COMMAND THE FUEL PUMP ON, THEN THE TEST LIGHT WILL BE ILLUMINATED. WITH A TEST LIGHT CONNECTED TO THAT WIRE, TURN THE KEY TO THE RUN POSITION. ![]() NEXT, CHECK FOR FUEL PUMP SIGNAL AT THE FUEL SYSTEM CONTROL MODULE.Ĥ. ![]() THIS WILL POWER THE PUMP TO RUN AND CHECK FOR A FAULTY FUEL PUMP.ģ. CONNECT PIN32 (RD/WH BATT + ) TO PIN47 (GY FUEL PUMP 12+) CONNECT PIN1 (BLACK GROUND) TO PIN16 (PINK GROUND)Ģ. PLEASE REFERENCE THE DIAGRAM TO HELP PROPERLY DIAGNOSE A FAULTY FUEL SYSTEM CONTROL MODULE.īEFORE TESTING, ENSURE THAT BOTH FUEL RELATED FUSES HAVE BEEN REPLACED:ġ. YOU WILL ALSO FIND THE PIN OUT DIAGRAM FOR THE FUEL SYSTEM CONTROL MODULE FOUND ON 2007 AND NEWER GM VEHICLES. AT THE BOTTOM OF THIS PAGE, YOU WILL FIND THE YOUTUBE VIDEO FOR THIS PROCEDURE.
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