I have an automatic 2004 international 4300 dt 466. It started few weeks ago. While driving my rpm needle and speed needle started to wig out , going up and down. "check tran" light came on I pulled over turned truck on-off and everything was fine for about a week. It started doing it again but without any lights coming on, just needles going up and down, but now my actual rpm's are going up and down. Also I am not sure if one has to do with another, but I've been having troubles shifting from park, I have to slam hard on brake to get that shift release click and it's been clicking while driving. Anyone has any ideas or solutions please help.