where is the Logic Modular? on 1997 Oldsmobile Bravada

Truck keeps shutting off and have to wait 5-10 minutes for it to start and then when it get's started it will go for about a mile and will shut off again. It seems to do it when it is hot and humid and after it's been on a hour trip?

Asked by for the 1997 Oldsmobile Bravada