truck has moments where it does not want to stay on

You need to test things when the problem occurs , check for good ground at fuel pump , Some vehicles are particular about fuel pressure just having it won't do . Look for any obvious wiring problems/corrosion at disconnects/along frame rail . Mice can invade even a daily driver .

Throttle body may require cleaning, throttle position sensor may need to be replaced, sit in driver seat turn ignition to on don’t start vehicle, depress accelerator slowly to the floor, release and start engine normally, check operation and idle rpm.