Removal Procedure

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2004 GMC Sierra, 2004 GMC Cab & Chassis Sierra, 2004 Chevrolet Silverado, 2004 Chevrolet Cab & Chassis Silverado, and 2003 GMC Sierra. However, it is still accessible from the selected car via links, so may be relevant.

CAUTION: Refer to Brake Fluid Irritant Caution in Cautions and Notices.

NOTE: Refer to Brake Fluid Effects on Paint and Electrical Components Notice in Cautions and Notices.

Apply the park brake and block the wheels.
Remove the brake master cylinder. Refer to Master Cylinder Replacement (Vacuum Boost) or Master Cylinder Replacement (Hydraulic Boost) .

Fig 1: Removing Master Cylinder Mounting Nuts

Courtesy of GENERAL MOTORS CORP.

Remove the vacuum hose from the brake booster check valve.
Remove the pushrod retaining clip (4) from the brake pedal stud (1).
Remove the stop lamp switch (2) and the pushrod (3) from the brake pedal stud (1).

Fig 2: View Of Pedal Stud, Stop Lamp Switch, Pushrod & Retaining Clip

Courtesy of GENERAL MOTORS CORP.

Remove the 4 vacuum booster mounting nuts.
Remove the vacuum booster.

Fig 3: Removing Vacuum Booster & Nuts

Courtesy of GENERAL MOTORS CORP.

Remove the gasket from the booster and discard.