ok well i replaced the water pump, thermostat and radiator cap. now why would my truck be over heating? does anyone have any info for me please help.

 

low on fluid? cracked radiator or heater core maybe

 

make sure you put the thermostat in the correct way. also if you take out the stat and id doesnt over heat then the stat is bad. also when was the last time the system was backed flushed? there could be some gunk built up inside. or the fan is shot