Master Cylinder Reservoir Replacement

Master Cylinder Reservoir Replacement
Removal Procedure

Caution: Refer to Brake Fluid Irritant Caution in Service Precautions.

Notice: When adding fluid to the brake master cylinder reservoir, use only GM approved or equivalent DOT-3 brake fluid from a clean, sealed brake fluid container. The use of any type of fluid other than the recommended type of brake fluid may cause contamination which could result in damage to the internal rubber seals and/or rubber linings of hydraulic brake system components.

Notice: Refer to Brake Fluid Effects on Paint and Electrical Components Notice in Service Precautions.





1. Remove the brake fluid from the reservoir. Discard the fluid into an approved container.
2. Disconnect the brake fluid level sensor electrical connector.





3. Remove the brake fluid level sensor.





4. Remove the master cylinder reservoir attachment pins and discard the pins.
5. Release the reservoir from the master cylinder by carefully pulling reservoir straight up.
6. Remove the reservoir seals from the master cylinder body.

Installation Procedure





1. Install the reservoir seals to the master cylinder body.
2. Install the reservoir to the master cylinder body by pushing the reservoir bayonets straight down into the seals in the master cylinder body.
3. Install NEW reservoir attachment pins. Ensure that the attachment pins are fully and firmly seated.





4. Install the brake fluid level sensor.





5. Connect the low brake fluid level sensor electrical connector.
6. Fill the master cylinder reservoir.
7. Bleed the brake system.