Yukon/Denali XL 1500 4WD V8-60L: Hydraulic Fluid Accumulator TSB Page
7. Release the C-clamp.
8. Remove the nut from the stud.
9. Remove the J26889.
10. Install the master cylinder to the hydraulic booster. Refer to Master Cylinder Replacement.
11. Release the park brake and unblock the wheels.