Hardshifting P0700, P0842 & P1810
I have a 2010 chevy cobalt automatic with trouble codes P0700, P0842 & P1810. Im getting hard shifting in all gears but sometimes shifts ok. It also seems to get confused on which gear to be in and doesn't always downshift. I replaced the transmission with a low miles used one and getting the same codes and same symptoms. Also, the cruise control will sporadically quit working and the door locks will not unlock when shifting to park. not sure if its related. I also tried manually grounding the tcm and checking fuses. any help is much appreciated!