Catfish_camaro

I have a 2000 3.8L v6 camaro and im having “overheating” issues ive replaced the thermostat, upper and lower radiator hoses and the coolant temp sensor, the coolant in the radiator keeps disappearing (for lack of a better word) its not blowing white smoke (burning the coolant), oil is not milky, and its not blowing it out of the radiator cap or hoses... this issue has me stumped and im not sure what the problem could be unless i got a defective new thermostat... I appreciate any and all help.

topless2002SS

check your trans fluid for coolant

JD94ss

Is the carpet wet or damp inside? Could possibly be the heater core?

dudesqueak

Is the overflow tank filling up or overflowing ever? Temperature gauge dancing around to 260 and back? I had the same problem, a new radiator cap and coolant flush "fixed" it for a while (Camaro was due for a flush anyway). Later, my radiator kept emptying and filling up the overflow tank, every week I would transfer the coolant from the overflow tank back into the radiator with one of those cheap transfer pumps from Harbor Freight. Now, I am 90% sure that the hose (see this https://ls1tech.com/forums/general-m...tank-hose.html) is the reason I keep having the issue, I just haven't gotten around to replacing it yet. Hope it works for you!