Quote Originally Posted by joshuatree View Post
Hello,

So I just got my 2010 aveo out of the dealership for an overheat. The dealership told me they replaced the head gasket, as well as a leaky radiator hose. and I also had the timing belt replaced (it's got 75,000 miles)

I've had it back two days and it overheated yesterday on the freeway. I made it home but the needle would spike to hot, then dip down to normal. In a 40 minute drive it did that about 5 times. It kept running, but I would lose power while it was too hot.

Today drove it around my house to see if I could replicate the problem and the temperature gauge only hovered around the 1/4 mark, which it's always been right below the halfway mark. So now it's running way cooler than normal.

Is this just a thermostat issue? Do thermostats "go bad" or do they just either work or don't work? Thanks in advance for any guidance!
Yes, thermostats do go bad, and they can fail in fully open mode, fully closed mode or stuck halfway - all of which will cause problems. Perhaps that was your only original problem - and replacing a thermostat is a very inexpensive repair.

They sold you a radiator hose, a head gasket and a timing belt. How many $$$ did the stealership take you for in doing that work? You brought it to them because it was overheating, and now it's still overheating.

I never cease to be amazed at how much a consumer will tolerate. Obviously they didn't diagnose the problem and remedy it, because it still persists. Apparently knowing how to complain effectively and/or stop payment has become a lost art.

Will you throw any more money at them? Or will you insist that they rectify the problem?