15RedSonic
New member
I got the check engine light come on, when I checked it it said replace thermostat, I got a new ac delco unit from Amazon for $75, just to give a heads up, not an easy job, I would have taken it to a shop if I knew, need special tools, make sure you have a quick connect hose clamp removing tool, I broke a hose connected to thermostat housing that cost $50 at dealership, there is a YouTube video that make it look easy, lot of small details missing, hard to get part out, part comes with a rubber gasket missing, I think this part will fail in a lot of Sonics, specially in hot places like Florida, I don’t know why they made it plastic