Avalanche 2500 4WD V8-8.1L VIN G (2003)
Vacuum Brake Booster Check Valve: Service and Repair
Vacuum Brake Booster Check Valve and/or Hose Replacement
Removal Procedure
1. Remove the vacuum brake booster check valve from the vacuum brake booster.
2. Remove the vacuum brake booster hose clamp at the check valve.
3. Remove the vacuum brake booster check valve from the hose.
4. Remove the manifold sight shield (4.8L, 5.3L, 6.0L). Refer to Intake Manifold Replacement in Engine Mechanical 4.8L, 5.3L, 6.0L.
5. Disconnect the vacuum brake booster hose at the engine (4.8L, 5.3L, 6.0L).
6. Disconnect the vacuum brake booster hose at the engine (4.3L).
7. Remove the vacuum brake booster hose from the vehicle.
Installation Procedure