When taking off from a stop the transmission tends to jump when shifting from 1st gear to 2nd gear. Also when putting it into gear the transmission jumps, mostly drive and reverse. This is a 2007 model 2.2L. This year of a cobalt is different from the 05 and 06 models. And its a automatic transmission not manual with about 107000 miles on it and one transmission flush. Can someone tell me what the problem is.