Ok, I have a 1988 GMC K5 Jimmy 4x4. Lately it hasn't been running very well and has gotten progressively worse until today it wouldn't even idle without dying. It's also doing something really weird - none of the electronics (map lights, radio, headlights, anything, etc...) will work unless the truck is running. I checked all the fuses and they're OK so I'm stumped there. Next is the truck not running. I know it is starving for fuel since it will run on starting fluid but it wont run without it. I would think it would be the fuel pump that is the problem. Now the fun part - I don't know where the fuel pump is It has an aftermarket electric pump, not a mechanical one but I'm not sure as to where one would mount it but I'm hoping it's not on top of the gas tank. Anyone know what I need to do before I go find the fuel pump and replace it?