I have a 94 ATX SHO which just had the tranny rebuilt....now the OD light blinks....if I reset the computer it will go away, but comes back after 125 miles of highway miles. If I drive around town it stays off....Only comes on after about 125 high speed driving miles.....If it comes on and I pull over and reset the computer it will go away but again comes back after 125 miles of highspeed driving.....HELP