K 2500 Yukon 4WD V8-6.0L VIN U (2000)
Hydraulic Brake Booster: Service and Repair
Notice: Hydraulic brake systems use two distinct and incompatible fluids. Power steering fluid is used in the hydraulic brake booster system. Brake
fluid is used in the master cylinder and brake pipes. Use extreme care when selecting brake system fluids, or seal damage can result. Refer to
Specifications to select the correct fluid.
Checking and Adding Fluid
For information on checking and adding fluid to the hydraulic booster system, refer to Checking and Adding Power Steering Fluid in Power Steering
System.
Bleeding the Hydraulic Booster System
Refer to Bleeding the Power Steering System in Power Steering System.
Flushing the Hydraulic Booster System
Refer to Flushing the Power Steering System in Power Steering System.
Hydraulic Booster Assembly
Removal Procedure
1. Apply the parking brake.
2. Disconnect the inlet hose, the steering gear, and the return hoses from the booster assembly.
3. Remove the master cylinder. Refer to Master Cylinder Replacement (Vacuum Boost) or Master Cylinder Replacement (Hydraulic Boost).
4. Remove the stoplamp switch and the pushrod.
5. Remove the booster to bulkhead nuts.
6. Remove the booster assembly.
7. Remove the gasket.
Hydraulic Booster Assembly
Installation Procedure
1. Install the gasket.
2. Install the booster assembly.
