put a new (used) radiator in my truck this weekend, it was a extra from a tear down we did earlier this year, and today on the way to work i start to over heat right as i was pulling into work. So after a couple hours i start going through some checks to see what the problem might be. I get the thermostat off and start back pumping water through engine and a effing chunk of a snake falls out from water pump.....so now i get to spend my weekend tearing apart my engin to get the rest of the snake as well as now i definatly need a NEW radiator and probably heator core.