I have been having problems with my transmission for little while now. While going 55 it acts as if it is trying to slow down and then speed up...we took it to the shop and they said it was normal. Last night I started my car and started driving and it did not want to shift at all the rpms were at 3,000 and I was only going 40. I stopped and put it in park and then back in drive and i was fine but it acting a little weird again today. Has anyone else had this problem or know what I should do?