Question about 1987 GMC Jimmy

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How do you change out internal fuel pumps on a 1987 gmc jimmy? i don't see any bolts on the top of the fuel tank.

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Hello mhandte.

The sending unit assembly is retained into the tank by a ring that must be tapped counterclockwise to remove it.
I use a brass punch and a hammer to avoid making sparks while removing.
Keep a fire extinguisher handy when doing this in a well ventilated area.
These rings are sometimes tight and often rusted so it may be a good idea to get a new one when you get the pump.
Also the large O-ring below the sender will often be expanded from the fuel and difficult to reuse. Get a new one of those as well.

I hope your repair goes well for you.
Thank you for using FixYa.

KL

Posted on Nov 10, 2010

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Just follow the wiring and fuel lines to the tank. The pump is behind that area. Make sure the fuel level is well below that area before opening. Hope this helps!

Posted on Nov 10, 2010

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