scorpion

hey guys i have a problem with my 1990 teg gs i dont know how this happened but the car is messed up now the car wont park it wont do nothing i hope its not the tranny it only drives strigh it wont do nothing else it wont park reverse wat can the problem be someone say its the tranny someone says its might be some kidna cable any clue wat it can be and how i can fix this guys let me know thanks.