There are some really good threads on here regarding the "flashing D" issue if you want to take the time to search. Sorry I can't point you to them.
If I recall, there are some small, fairly inexpensive components (switches or sensors?) on the tranny that can cause (& fix) this.
Good Luck.
If I recall, there are some small, fairly inexpensive components (switches or sensors?) on the tranny that can cause (& fix) this.
Good Luck.