Transmission Trouble 2001Chrysler Concorde

I have a 2001 chrysler concord and she won't go in drive or reverse, when you shift to reverse she make a winding sound. This happened after a 4 hour drive on the highway. I parked in the driveway and the next morning she wouldn't go in drive or reverse. This past few months occasionally she would stay in low gear. The reading code say PO700. Transmission oil ok and no burny smell