Is it inside the gas tank or outside ?
SOURCE: Fuel filter location Sierra
I have been told by a mechanic that the fuel filter is inside the fuel tank. Have to either drop the tank or remove the pickup bed. Access is on the top of the tank. This is poor engineering.
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: 1998 GMC Sierra- runs rough then stalls when
had this problem on my neighbors 98 chevy truck with the same engine !!
it turnd out too be the fuel pressure regulator,you have too pull the upper intake too replace it!!
SOURCE: 93 gmc sierra 5.7 liter engine, injection carb,
you say you replaced the fuse, but does the fuse have power? the gray wire at pump should have power when cranking, or for 2 seconds when turning key on. At fuel pump relay, put power onto gray wire, the pump should run if the wiring is good. if it doenst run then ck for power at fuse while power is on gray wire.
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.
The fuel filter is about a foot away from the fuel tank on the driver's side of your truck. Just follow the fuel line from the gas tank. It is an inline filter about 4 inch long cylinder about 2-3 inches thick.
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