I have a 2002 Saturn SL1 and all of a sudden my car doesent work in reverse and now it also when I'm in Drive the car seems to shift hard. I checked the transmission fliud and that seems to be fine. The only thing that I can think of that I have noticed with my car is that I have to keep refilling my Coolent. Would that have anything to do with my car issue? Anyone know about how much this may cost me to get fixed and possibly where to take it that is reliable?