I have a friend who brought her car to me today and I'm tryin to help her out. Here's the problem. In drive, her car isn't shifting at all, so when she took it out on the highway she was at about 6,000 rpms at 45mph... Anyone have any clues on what might cause this? All other gears shift fine Fluid is good to go. I don't know a damn thing about automatic trannys except how to take it off and put it on. Any ideas?