gmc Workshop Repair Guides

GMC Workshop Service and Repair Manuals

Brake Assist System Diagnosis (Vacuum Assist)|Page 12468 > < Brake Assist System Diagnosis (Vacuum Assist)|Page 12466
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Vacuum Brake Booster: Service and Repair

Vacuum Brake Booster Replacement 

Removal Procedure

1. Apply the parking brake.
2. Remove the brake master cylinder. 
3. Remove the vacuum hose at the booster.

4. Disconnect the electrical connection from the stoplamp switch. Remove the pushrod retaining clip (4).
5. Remove the stoplamp switch (2).
6. Remove the pushrod (3) from the brake pedal stud (1).

7. Remove the vacuum booster mounting nuts.
8. Remove the vacuum booster.

Brake Assist System Diagnosis (Vacuum Assist)|Page 12468 > < Brake Assist System Diagnosis (Vacuum Assist)|Page 12466