It does not have a user-serviceable fuel filter. In 2004 when GM went to what is called a "returnless" fuel system, they incorporated the fuel filter into the in-tank fuel pump. That means from 2004 to present, the only way to replace the fuel filter is to replace the entire fuel pump.
SOURCE: Need to replace fuel filter on 2000 GMC Sierra
under the drivers side door, on the frame....
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: LOW OIL PRESSURE ON 2007 GMC SIERRA 1500. CHANGED
have it tested using a manual gage if still low then main baring ore most likely bad that would mean a over hall if is really low and bearings bad should be making rattle noise when started up first few seconds
Testimonial: "thanks alot.truck is not making a rattling noise.we did check it with a manual gauge.it read about 10 at idol. press. gets better as you incr speed"
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