2000 GMC Yukon? I took it to the dealership and they took apart the rear differential. They said that the pinion and bearings needed to be replaced. When they told me the cost I couldn't afford it so they tightened it down and replaced the fluid. The noise has gotten a lot worse after about two months now so I need to find someone that won't rip me off. It is just a Yukon not an Denali or anything like that. I would like to know what price I should expect to pay for the parts, labor and how long it would take to complete the job? Thanks!!!