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.
Disconnect the electrical connector from the brake fluid level sensor.
Disconnect the brake pipes from the master cylinder.

Fig 1: Disconnecting Brake Pipes From Master Cylinder (Vacuum Boost)

Courtesy of GENERAL MOTORS CORP.

IMPORTANT: Install a rubber cap or plug to the exposed brake pipe fitting ends in order to prevent brake fluid loss and contamination.

Plug the open brake pipe ends.
Remove the master cylinder mounting nuts.

Fig 2: Removing Master Cylinder Mounting Nuts (Vacuum Boost)

Courtesy of GENERAL MOTORS CORP.

Remove the master cylinder from the vehicle.
Remove the master cylinder reservoir. Refer to Master Cylinder Reservoir Replacement .