droppedmitsu
+1y
Could need a new radiator cap, that would cause those problems. You might not think you have a leak but it could be a tiny one right now and that would also cause problems. If neither of those problems I would try taking he radiator out of the truck and flushing it out with water from hose with a spray nozzle. Also check your fan, it could be wore out. It should NOT spin freely, it should have some resistance to it if its in good condition.