Inspection of fluid in my GMC Denali on 2004 GMC Yukon Denali

A complete inspection of the front differential was made. The mechanic suggested that it should be torn down and inspected because excessive metal was found in the fluid.

Asked by for the 2004 GMC Yukon Denali
Metal in the fluid is a pretty certain sign that an overhaul will be needed. That usually costs 800-2000 depending on what is damaged. Good luck!