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It is located midway along the frame of your truck.
Remove the fuel filter from the bracket on the frame rail.
Replace the fuel pipe O-rings if you find any cuts, nicks or distortion
in them. Slide the new filter into the bracket. Remove the caps you put
on the fuel pipes and connect the threaded fittings back to the filter.
Tighten it to 18 ft-lbs.
For 2000 GMC Truck Sierra 2500 4WD
5.3L SFI 8cyl the Fuel Filter is located:
Under vehicle, driver side, below seating area, near
fuel tank, mounted on frame rail in fuel line.
u can do the check the other way around/ disconnect the fuel line that supply the injectors/ put the pipe in a small plastic container to see if fuel is being supplied by the pump and avoid fuel spill in ur engine/ crank the engine for at least 5 seconds see if the fuel squirts with pressure/ if it does then ur fuel pump is ok / blockage is somewhere down the fuel line/ u can check fuel lines by blowing it with air but u gonna need the help of an air compressor.....
First thing unhook positive battery cable, unhook main cable on starter selanoid and small wire on selanoid (there may be 2 small wires) There may be a bracket on front of starter that has to be removed, and then the 2 main bolts that hold it to engine block and it should come out.
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.
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