2000 GMC Yukon FUEL PUMP

2000 GMC YUKON
17,500 MILES • V8 • 4WD • AUTOMATIC
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NDARLING
  • MEMBER
  • 1 POST
FUEL PUMP ISNT GETTING 12 VOLTS ONLY GETS 5 CHANGE PUMP 4 TIMES IN THE LAST 3 YEARS THIS TIME WE CHANGE RELAY WIRE TO PUMP AND PUMP LAST YEAR I WOULD BE DRIVING AND IT WOULD JUST QUIT ID WAIT A SECOND AND IT WOULD START RIGHT BACK UP HAD A DIAGNOSIS DONE THEY SAID THERE WAS NOTHING WRONG . PLEASE HELP ITS BEEN COSTLY
TY
Jul 22, 2010 at 1:19 PM
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JDL
  • ✓ASE Certified Mechanic
  • 16,098 POSTS
  • ASE Certified Mechanic
The gray wire at the fuel pump connector, is voltage for the fuel pump motor. Engine cranking, if that voltage is low, check the circuits at the fuel pump relay. Even if the relay is good, if there is a problem with wiring to the relay?
Jul 22, 2010 at 3:01 PM
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