I have a 2000 Grand Prix Gt and the problem i have is the tranny cooler line went at a intersection i got towed home and fixed the leak filled the tranny with the proper fluid started it up and now a new problem has came up the car will move in reverse under it own power but will not move forward in any forward gear now i do have limited money and want to fix it my self if possible any info on what it could be or what to check and how to would be greatly appreciated