i have a 1997 sl1 that ran good until today. all of a sudden leaving the store it jerked into reverse and the cel came on with code 0732. incorrect 2nd gear ratio. now it wont go into reverse and like i said just happened all of a sudden any help. all fluids were good. also it is an auto trans

 

Possible loose input shaft nut, valve body issue or solenoid failure

When the code sets is explained here:
http://www.saturnfans.com/forums/showthread.php?t=97212