<!-- message --> Hello everyone... the other day after driving home from work, I stopped to do some errands, and when I got back on the highway, I noticed my car was not shifting into overdrive, and my RPMs were staying up very high (around 3100 at 70 mph). Instantly assuming I had the shifting lever in wrong position, I of course checked that, and it was in the OD position.

The car shifts through all the other gears just fine and does not slip at all. What could be causing it to not go into that final gear? Is there a fuse maybe or some other electrical problem? I have only a very mediocre understanding of how automatic transmissions work so bare with me.

Thank you for any help.