Mar 272015
 

WHEN IGNITION TURNED ON FUEL PUMP DOESN’T CYCLE. IT KEEPS RUNNING. ALSO TRUCKS RPM SURGES WHEN DRIVING AT CONSTANT SPEED. HOPING RELATED BUT DON’T KNOW WHAT IS SUPPOSED TO SHUT THE FUEL PUMP OFF ONCE PRIMED? THX IN ADVANCE . DJ

  One Response to “96 GMC JIMMY V6 SMALL ONE”

  1. Sounds like the fuel pump relay is sticking or bypassed. The relay is controlled by the VCM-Vehicle Control Module and is certainly getting voltage if it is working.

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