HHR L4-2.4L (2010)
Vacuum Brake Booster: Service and Repair
Power Vacuum Brake Booster Replacement
Removal Procedure
1. Disconnect the battery negative cable. Refer to Battery Negative Cable Disconnection and Connection (See: Starting and
Charging/Battery/Battery Cable/Negative/Service and Repair/Battery Negative Cable Disconnection and Connection).
2. Apply and release the brake pedal several times until it becomes firm to deplete the brake booster vacuum reserve.
3. Disconnect the vacuum power brake vacuum sensor electrical connector, if equipped.
4. Remove the vacuum power brake booster check valve and hose assembly from the brake booster grommet.
5. Without disconnecting the wiring harness connectors, reposition the electrical center and the powertrain control modules from the underhood
electrical center bracket and remove the bracket. Refer to Underhood Electrical Center or Junction Block Bracket Replacement (See:
Maintenance/Fuses and Circuit Breakers/Fuse Block/Service and Repair/Underhood Electrical Center or Junction Block Bracket Replacement).
6. Disconnect the brake fluid level indicator switch electrical connector.
7. Remove the master cylinder nuts (1).
