Change fuel filter in 2004 chevy avalanche

change fuel filter in 2004 chevy avalanche

Hi, they go in the filter, you will need to remove the bad gas from the tank and
replace the fuel pump assembly and put fresh gas in the tank, see note below, .

For a 2003 it is on the frame rail under the drivers side door. Don’t bother taking off the black holster that holds the fuel filter onto the frame rail.
1 )Simply unscrew the nuts on both sides of the fuel filter. It will be under pressure. Wear safety goggles. A couple of cups of fuel will spill.
2) Look at the fuel line on the engine side. Notice the clip holding in the line. Remove the line from the clip.
3) Remove the fuel lines from the filter starting with the side toward the engine. This side has more play/laxity in the line.
4) Slide out the fuel filter from the black holster.
5) Slide in the new fuel filter with the flow directional arrow pointing toward the engine.
6) Attach the fuel line to the filter starting with the tank side first. Don’t force it and thread out the fittings.
7) Attach the engine side fuel line. The fitting would come together by hand screwing the male into the female end. I did have to use a wrench to gently start it.

Total project time 20-40 min. Change it every 30k.

The debris removed collect in the pores of the filter media. As the fuel filter does its job, the element becomes restricted. Debris reduces the fuel that can flow. If the filter restricts too much fuel, the fuel pump cannot provide enough pressure to the injectors. Lowered fuel pressure will reduce power and may cause the engine to hesitate, misfire or stall.

The fuel system on the 2004 Chevy Avalanche comes with an in-line canister-
type fuel filter. The fuel filter is the last line of defense against small particles and
 .

The fuel system on the 2004 Chevy Avalanche comes with an in-line canister-
type fuel filter. The fuel filter is the last line of defense against small particles and
 .