Fuel pump relay?

No, a failing fuel pump will cause the fuel pressure to drop. To see if the pump is weak or failing check the fuel pressure -- it should be between 58 and 65 PSI.
A hot relay can be normal, but if there is a problem with a wire connection, this will cause a relay to heat up. A connection problem can be inside of the relay itself or elswhere in the circuit. With these trucks a corroded ground can cause all kinds of problems. The fuel pump ground often corrodes. It is located just before the fuel tank and is connected to the frame crossmember. It is a black wire and comes out of the fuel pumps wiring harness. This one little ground is the cause of many fuel pump headaches. Try removing and cleaning this connection up.

The if the fuel pump is indeed at fault make sure you replace the fuel pump chassy wiring harness connector when the pump is replaced. This connector is a "one shot deal". When these connectors are plugged in that's it -- you cannot unplug and replug in this connector. If you do the connection will arc and heat up causing all kinds of problems---this is a defect in this type of connector.

Here is the fuel pump relay location below. Check out the diagrams (Below). Please let us know what you find.

Before I do that, are you sure its the fuel system?

Have you tested ignition and fuel system?

You tried spraying starting fluid down the throttle body and cranking it? Does it fire up then die? Fire up and stay running?

Whats the fuel pressure at the rail, dont just push on it and if fuel comes out think its good, you need to know how much pressure.

If pressure is within specs I would be checkign pulse from the fuel injectors.

https://www.2carpros.com/articles/car-cranks-but-wont-start

Get a helper disconnect a sparkplug wire or 2 and ground it to the engine atleast 3/16 away from ground-have helper crank engine over-do you have a snapping blue spark? If so-you have a fuel related problem, Do you hear the fuel pump come On when you turn key on? If not check fuel pump fuse and fuel pump relay if okay-check the fuel pressure to rule out the fuel filter/fuel pump/pressure regulator and listen to the injector/s are they pulsing or hook up a noid light. No snapping blue spark continue to troubleshoot the ignition system-power input to the coil/coil packs,coil's resistances,cap and rotor,distributor pick-up coil, ignition control module, cam and crank sensors and computer Note: If it doesn't apply disregard it and keep testing

The fuel pump comes on for about 2secs before the fuel pump relay de-activates when engine is cranking and oil pressure goes above 4psi this is time that fuel pump/oil pressure sending unit will constantly power the fuel pump.

Could be the computer control of the fuel pump relay

First check fuse number 7 in the fuse box inside the truck. It should be a 25 amp. Lets start with that as that is the data link fuse. Also 2wd or 4wd? Thanks

Sounds like you might have a bad instrument cluster which is available from your local parts store. So do you have a digital volt ohm meter? If so we can do some testing to make sure.

Could be relay or wiring....Seems the fuse for the pump handles the PCM as well!