Help with the winter of a group of a Hummer H2

Good, I have a Hummer H2 and it has a real game in the Palieres of the rear axle, they have told me that it can be regulated if the group is disassembled, some sheets that it must carry inside, but I do not dare when I do not have the display of it. could someone provide it or give me your opinion or experience .... thanks !!!!!

Look but you have many knowledge or patience, it is better that you send that job, since you have to disassemble everything and if it is not right, you disassemble everything again and try again this is done or will be able to align the vehicle but it is slow and complicated also for a good alignment you have to put it in a machine that measures the combergencia and the divergence and you do not have it that is my lucky advice.