Truck just quit like shut gas off

Hello,

It sounds like you might have a faulty crank position sensor.
Usually when a crank sensor goes bad the engine will stall, it could also produce random misfire. The engine light may or may not get triggered.
Typically the crank sensor will fault when the engine is hot.

You might find these articles helpful:

https://www.2carpros.com/articles/symptoms-of-a-bad-crankshaft-sensor
https://www.2carpros.com/articles/crankshaft-angle-sensor-replacement

I have attached the replacement procedure for the crank sensor.
Note: You will have to remove the starter in order to gain access to the sensor.

Please let me know of any questions.

Thank you.