How to change the fuel pump on a 2003 Yukon?

Answer 1

Back your truck up on a set of ramps, if it will start. If the truck wont start use a jack to raise the back of the truck up. Put a floor jack or motorcycle jack under the gas tank. Then where the gas hose goes from the tank to the gas cap you will need to slide the hose clamps down the hose so you can disconnect the hoses. Raise the floor jack up under the fuel tank to hold it while you tack off the two straps that hold the tank. After you remove the straps, lower the tank enough to disconnect the two fuel lines and vent line. You will need a clamp release tool to disconnect the hoses. Last you need to disconnect the wires the supply power to the pump and fuel level. Lower the tank so you can pull the tank from under the truck. There is a lock ring that holed the pump to the tank , turn the ring until you can remove it. After you remove the ring the pump will pull out of the tank. The new pump will contain a new wiring harness that you will need to install. The directions to do this will be in the box with the new pump. All parts needed will come with the pump. Just put everything back in the reverse order you took it apart. This took me about 1 ½ hours to do from start to finish. Good Luck!

Answer 2

Disconnect fuel filler hose, fuel lines from the top of the tank, drop your fuel tank, remove retaining ring, carefully pull unit out. Installation is reverse. When installing seal, lubricate it so it doesn't harden up.