OLDSMOBILE NINETY-EIGHT REGENCY DRIVETRAIN

I Can Not Into Park I Can Shift Iinto All Other Gears + Netural.

I Was Driving Car And Lost All Power. I Can Feel A Slight Jump When Shifting Into Drive Or Reverse, But Car Won't Move. In Park Or Neutral...

Trans Won't Shift Out Of First Gear. Any Sugestions -could It Be A Bad Modulator?