I have a 2004 GTP. A couple of days ago, check engine light came on so my wife took it to a shop to have the code read( I had to work,so she had to take it). I later talked to the guy and he said the T-stat was sticking open,causing low coolant temps(which checks out because my wife said when she drove it,the air from the heater wasn't heating up).Anyway, got a new,colder T-stat and replaced it.Everything is good,except the check engine light is still coming on.I knew some guys put colder T-stats in their cars,so I was wondering if this was an issue.Not sure if it was a 180 t-stat, but I think so and may have been a 160.
