Question about 2003 GMC Yukon XL
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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Posted on Jan 02, 2017
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
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
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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