Nodnarb901

My new to me 15 Yukon has a popping/clicking noise in the steering wheel when turning at low speeds. It looks like GM has issued a service bulletin for this issue. Has anyone here done this themselves? Anything I should know before I start, or any tips?

Thank you I am checking it out now.

I am new to this forum and my (new to me) 15 Yukon XL. My new Yukon is my daily driver and my "fun" project car is my 87 R20 Suburban that I LS Swapped 6 years ago by myself. I am the Service Manager for a Maserati and Alfa Romeo dealership so I have access to lifts when I need one. When ever I buy a used car I like to replace all the fluids/filters/spark plugs because I assume the previous owner did not keep up with service or used cheap parts. My questions are this: When replacing the Transmission fluid (with filter) , and transfer case fluid, how much transmission fluid should each take? Also the owner's manual calls for 80w90 gear oil for the front diff and 75w90 for the rear. how much for each of these? Is there a particular gear oil or additive I should use in the diffs?