Hi guys, My 2008 ve ss 6.0L starting overheating after short drives and i could hear a boiling sound coming from the engine bay. Ive taken it to a mechanic and theyve had the car for 4 days now and still cant work out the problem. Im just wondering if anyone here has had this issue before. So far the mechanic has refilled the coolant, flushed the cooling system and radiator and changed out the thermostat. The radiator is less than a year old and the hoses about the same. Every day he keeps saying he cant work out the problem and im thinking of taking it to a mechanic that knows what he's doing. Do any of you know what could be causing it?