Fuel Pump in a 1999 GMC Jimmy?

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That covers most of it.

Don't forget, you have electrical to the pump and the fuel quantity sending unit. They should both be on plugs, just don't get anxious.

Make sure you get as much fuel out of the tank as possible. You will be muscling the tank around and don't need any extra weight. As a note, it has been my experience that there is very little slack in any of the lines or wires.

If new gaskets, seals or sealing compound are required it is best to have them handy. Nothing like chasing parts on a bicycle or skateboard.

It isn't a piece of cake by any means but it is not at all an unreasonable job for driveway or garage. Don't try to rush and all will be fine.

Good luck....Show more

1999 Gmc Jimmy Fuel Pump...Show more

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RE:
Fuel Pump in a 1999 GMC Jimmy?
I have a Haynes for the mentioned vehicle. after reading about draining the tank and using a quick disconnect tool to get the lines off the top of the tank, is it just as easy as
1) Drain tank.
2) unbolt plate beneath tank
3) disconnect lines using tool
4) drop tank
5) take out old pump
6)......Show more

8. Remove the tank straps. NOTE:

o Ensure that the connections to both roll over valves are disconnected prior to lowering the fuel tank more than 51 mm (2 in) . The roll over valves are located at both the front and rear of the fuel tank.
o Use extreme care when lowering the fuel tank. The fuel sender is made of plastic. Lowering the fuel tank may damage the fuel sender.

Install a new seal ring. NOTE: Do not fold or twist the strainer when installing the sending unit. This action restricts fuel flow.

7. Tighten the clamp. NOTE:

o Tighten the strap fasteners by steps, alternating between the fasteners, until the specified torque is reached. A failure to tighten the strap fasteners as specified will cause the bottom of the tank to flex upward. This will result in the fuel gauge indicating that there is fuel remaining in the tank when the tank runs dry.

IMPORTANT : When removing or replacing the fuel tank, the fuel tank support fasteners should never be reused. Always use new fasteners when installing the fuel tank.

Pay attention on this stuff.Good luck....Show more

There might be an external fuel filter. It's important to change it. If you don't it could be clogged and wear out you new pump.

Trust me on this. I went through the same sh!t on my 99 suburban. I didn't know about the external filter, didn't replace it and the new pump only lasted about a month.

I fixed that problem and shes still a rollin'....Show more