SOURCE: Fuel problem 2002 GMC Sierra 1500
Really by the way you describe it you need to check the fuel pressure. There is a valve on the fuel rail for testing it. You will need a fuel pressure gauge. It should have 55 to 65 psi. It will not run on less than 50 psi. If you have less then it will be your pump. Good Luck
SOURCE: location of fuel filter on 2004 GMC Sierra 1500
if you don't see it along the left frame rail just ahead of the tank then it is in the tank
SOURCE: Need to replace fuel filter on 2000 GMC Sierra
under the drivers side door, on the frame....
SOURCE: Where is the fuel filter on my 2008 GMC Sierra
The fuel filter is in the fuel tank.This vehicle has a returnless fuel system.There is no fuel return line.Hope this helps.Good luck.
SOURCE: Is the fuel filter for the 2004 GMC Sierra 1500
You may be lucky and the fuel filter is still on the inside frame rail under the drivers door. 2004 was the change off year and 2005 was defiantly the no serviceable fuel filter.
You can go to the dealer with your vin number and they can look up in there system if you have the external fuel filter, or you can just look for it on the inside of your frame rail.
Thank you for using fixya and be safe.
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