Urgent Grand Cherokee Transmission Problem

Good friends I am a automotive electrician but I have a big problem in mechanics I have a Jeep Grand Cherokee 4x2 Motor online 6cl The big problem is that for 2 years the truck has the rear transmission watching the truck from behind it is clear that the transmission is run to the left side is the left rubber left out to the left and the right to the left left of the boomerang is rode new and every 15 days it breaks, which can be I need an urgent response