Question about 2003 GMC Yukon XL

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If the fuel tank pressure switch went bad, would it interrupt power to the pump preventing the pump from running?

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  • GMC Master
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There is no pressure switch - just a pump fuse, a relay and a pressure regulator. The pump runs continuously when the engine is running, and the regulator sends gas back to the tank if the engine doesn't need it at the correct operating pressure.

Posted on Jul 07, 2017

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6 Suggested Answers

6ya6ya

6ya staff

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Posted on Jan 02, 2017

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MrRodneyLong

Rodney Long

  • 74 Answers

SOURCE: 95 F150 2wd, interrupted fuel from the front fuel tank

my idea, the pumps are working agianst each other. what is the line pressure supposed to be? I think the rear pump is burning the new pumps up. is the rear pump running when the front pump is running? Let me know MrrodneyLong@gmail.com

Posted on Jul 04, 2008

Anonymous

  • 124 Answers

SOURCE: 2003 Yukon XL Front passenger side door: Electric

yes it does sound like that is your problem. try checking for used one.

Posted on Mar 11, 2009

dennymulford

Dennis Mulford

  • 1055 Answers

SOURCE: fuel delivery

yes i had the same problem like too never found it but it was the fuel pressure regulator
and on that engine its located below the upper intake you have too pull it off too get too it!!!
it takes about two hours too do the job!!!

Posted on Apr 23, 2009

Anonymous

  • 111 Answers

SOURCE: 2003 gmc yukon denali xl

Sounds like the fuel pump relay is bad.

Posted on May 21, 2009

Poncherello

  • 312 Answers

SOURCE: do you have to drop your tank to change fuel pump

Yes, you will need to remove the fuel tank. Replacing the fuel pump is a pain in the *** if you've never done it before.

Posted on Oct 03, 2009

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