Question about 2000 GMC Safari

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3 bad fuel pumps in 4 days - 2000 GMC Safari

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  • mw2k27 Dec 19, 2008

    we installed 3 the truck run once for a full day and then today we installed the 3rd on it only ran for 20 min and wont go

  • mw2k27 Dec 19, 2008

    we have not tried them out of the truck,can u think of any reason why 3 would go is there something were missing a switch a fuse anything??? please help this has cost us way too much money

  • Mike Butler
    Mike Butler May 11, 2010

    Did you try direct power to failing ones to see if they would work out of the vehicle?

  • Mike Butler
    Mike Butler May 11, 2010

    Have you tested any of them with 12vdc direct to be sure. How far did you get with installation? Tried just hooking up harness, out of tank etc?

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You might try a fuel system cleaning at a shop it is cheaper than a pressure regulator it worked for us on 2000 gmc safari

Posted on Jan 16, 2009

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  • GMC Master
  • 6,674 Answers

Yah, I'm thinking weak relay, or faulty pressure regulator for starters. Can't blame the pump, if it isn't getting power to run it. Also make sure ground is good. Filter has been changed.?That's why I would have confirmed power to pump before I pulled the first one out. Check on ( Autozone.com ) for fuel system components, electrical, relays etc that are associated with your vehicles fuel system.

Posted on Dec 19, 2008

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