Dustin Roberts

Thanks man! I changed the lower radiator hose thinking it might have been collapsing and it still overheated after that. Haven't changed the upper. I think that is the only hose that hasn't been changed at this point. Do you think there's any way that it could be collapsing? Today I'm planning on by passing the heater core all together to rule out it possibly being clogged. And if the problem is still there trying to burp the system again. Thanks for the help man!

I have 2005 GMC Sierra 1500 that has had an overheating problem for the last couple of months. The truck only gets hot when driving. As soon as I come to a stop it starts cooling back down (I don't have to shut the engine off to cool it back down). It sits right around 200 degrees when idling. After it overheated the first time I found a leak in the radiator and put a brand new radiator in but still had the same issue. Then I changed the coolant temp sensor and I found a few more leaks in a couple of hoses and changed all hoses with leaks but it still overheated. Next I changed the thermostat, water pump, serpentine belt and even the reservoir cap but still gets hot during a drive. Everything I've changed has seemed to move me in the right direction of not getting as hot as quick but still not solving the problem. As of right now there are no leaks and I can drive for about 20 min before the temp starts getting hot. Any advice is greatly appreciated. Thank you.