Since we pulled out our battery to get our car to start when we took it in to be fixed, it apparently reset the computer in the car...so, they don't know what the problem is! It is saying that everything is fine! So now we will just keep driving it until that light comes on again and then take it back in. They think it's probably the transmission going out or a glitch in the car's computer which is making it so the car won't go into overdrive. We hope it's the latter!