Go get a new T-Stat.What should I do? thanks Darren.
There is no code to reset if it's your thermostat. You can reset the car yourself, but you will probably find that the hot engine comes on again. It's around $25 for the part. It's something that can be done at home, if you're willing to put the effort into it. There's a ton of threads in here about the bad thermostat in the STS-V. All the same symptoms as yourself and almost all of us had a thermostat go bad.OK I get that I need a T-Stat . The car has sat for over a day and when I start it up for the first time the code a and fans are on . the engine is clearly cold. is there a code I need to reset?