Here lately shift flares are running wild, a couple months ago I had maybe 1 or 2 occasionally, now as of last week they happen at least 20 times per drive across town. It seems to do it any time I am just driving at a set speed or going downhill. This morning I pulled into a car wash and it made the most awful noise and slammed into park. It then wouldn't pull forward, range inhibited light came on, does work in reverse fine. Waited awhile, then the only way to get it to go forward was to engage the tow mode. I drove to a small shop in tow mode, then shut it off, now it drives ok without toe mode. Any help is greatly appreciated. I'll try and get these codes shortly.