We have a 2002 Dodge Ram 1500 that is jerking into gear. It is an automatic vehicle and not a 4x4. This started two days ago and we were on our way back; it was a 25 minute drive we were taking and all of a sudden the truck felt like we hit someone. We did not hit anyone and we checked behind us to see if either something fell out or we ran over something. We pulled over and checked under the truck but did not see anything. Immediatly we saw that the "check engine light" came on so we took it to get checked out. They told us that it came up as Code PO 700. That is all they were able to say since they are not a transmission place. We were told to take it to a transmission shope and they can pin point what is wrong. We have only driven it twice...since the problem started. It now jerks when it goes into 2nd; what I believe is 2nd. Plus when you are taking off it takes off like it is a manual vehicle. Does anyone have any idea what is going on. We plan on taking it to get checked out by the transmission shop but in order to do that we want to have the money to fix the problem and not have to leave the truck there and pay storage fees. Can anyone help?