Tranny Problem?
Hey JnR, I also have a 2012 Wrangler, Rubicon, six speed AND have tranny issues.
I purchased it used at 15K and noticed every now and then it would grind only in to 4th. gear. I've had it about a year now and the grinding has gotten progressively worse as well as it jumping out of 4th. gear while accelerating. I took it to my dealership for repair and they said it was the shift kit and boot. They were supposed to have replaced those parts however, the problem is still the same, maybe even a little worse. Yesterday I took it back to the dealership and the owner (a very good friend and one who I'm sure will remedy the problem), rode with me and in less than two miles it ground into and out of 4th. gear six times. I knew when the tech guys drove it they would encounter no problems....Anyway the owner of the dealership now knows there IS a problem. We are not alone with this transmission issue as there are many threads concerning the exact same problem. Various outcomes have been posted from the "shift kit and boot" replacement to synchronizer's and even a complete transmission replacement. I doubt if I get my Jeep back today but I will keep the Forum advised of what has been done. By the way, my throw-out bearing also makes noise which I don't think is the problem since it seems to be only with 4th. gear AND it also has a rattling noise while driving in 4th. gear.....