How do I replace the fuel pump?

First steps first. Check your fuel pressure. Then from there check to see if the injectors are getting a pulse this can be accomplished with the use of a noid light

Disconnect the injector/s harness -hook up a noid lite to it, have helper crank engine over -is the noid lite flashing?

Hi:
The fuel pump is in the fuel tank. From experience, the easyiest way to replace it is to remove the bed. There are 8 bolts holding it on, a couple wiring harnesses for the rear lights, and the filler tube which is attached by three screws. All you need is someone there to help you pick it up. Once it's off, you have full access to the top of the tank.

If you have any other questions, let me know.

Joe
NOTE: I recommend this way because fuel tank straps are usually rusted, and the tank is plastic and very easy to break when replacing it.

Is the pump shutting down? If so, have you checked the fuel pump relay?

Let me know.
Joe

If the ASD was bad, it wouldn't run. Also, if you still are getting fuel to the carb, then the pump is working which leaves us with spark. Does the engine start right back up? If it doesn't, will it start for a few seconds with starting fluid?

Finally, to answer your question, I did some checking and the truck is fuel injected. So, you could have a plugged fuel filter or a bad regulator that limits the fuel from getting to the injection. If you take off the air filter cover you will see the injectors. There should be a cone shaped mist of foel coming from them when the engine is running. Check to see if it stops. If it does, see if the truck will start with starting fluid and let me know what you find.

Joe