How to Change the Gas Filter on a 2000 Yukon

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THe GMC Yukon uses an in-line fuel filter to protect the engine against debris and sediments that may be in the gas tank. Once the filter gets clogged, it will need to be replaced to ensure the truck gets good fuel economy and utilizes all the power the truck is capable of. The recommended interval for changing out the filter is 30,000 to 40,000 miles. This will ensure any debris and sediment that may get sucked in the fuel line does not reach the engine.

Things You'll Need

  • Line wrench set
  • Socket set
  • Socket wrench
  • New fuel filter
  • Ensure the Yukon is parked on a flat and level surface. Open the hood for access to the engine compartment.

  • Locate the fuse panel behind the battery. Open the fuse panel by taking off the cover. Take the fuse for the fuel pump out by hand.

  • Start the truck and allow it to idle until it stalls. This will depressurize the fuel system. Turn the ignition to the "Off" position and take the key out. Insert the fuse back in the fuse panel.

  • Locate the gas filter under the truck. Follow the fuel line under the truck to the driver-side front door. The filter will be tucked away, bolted to the frame rail.

  • Unscrew the inlet line with a line wrench. Use a second line wrench to hold the filter still. Repeat to remove the outlet line.

  • Unbolt the filter from the frame rail with a socket wrench. Slide the filter out from the mounting bracket.

  • Position the new filter to the bracket and secure it with the socket wrench. The arrow on the filter needs to be pointing toward the front of the truck; this designates the direction of the fuel flow.

  • Tighten the fuel lines to the filter with a line wrench. Use a second line wrench to hold the filter still while tightening the line. The filter has a stationary nut for the line wrench to grip.

  • Start the truck to circulate the fuel in the fuel lines. The truck may not start right away, as there is air in the fuel lines. Bleed the air out by turning the ignition to the "Start" position and waiting for three seconds. The fuel pump will push fuel in the lines, pushing out the air. Once the air is pushed out of the lines, the truck will start.

  • Allow the truck to idle for five minutes. Inspect the filter for any leaks.

Tips & Warnings

  • Taking off the gas cap and allowing the truck to sit for four hours will also help to depressurize the fuel system. Have a drain pan standing by to catch any fuel from the fuel lines.
  • Wear protective eye gear as fuel can be hazardous to the eyes.

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References

  • Photo Credit pumping gas image by Mat Hayward from Fotolia.com
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