For 1990-2009 cars only
Removal Procedure
- Apply the park brake and block the wheels.
- Disconnect the electrical connector from the brake fluid level sensor.
- Remove the master cylinder. Refer to Master Cylinder Replacement .
- Drain the master cylinder reservoir.
- Secure the master cylinder in a vise. Do not clamp the master cylinder body, secure only at the flange.
- Remove the brake fluid level sensor by carefully depressing the retaining tabs and pushing the sensor through the reservoir.
- Carefully remove the reservoir retaining pins.
- Remove the reservoir from the master cylinder by pulling the reservoir straight up and away from the cylinder.
- Remove the seals from the master cylinder.
Installation Procedure
- Inspect the reservoir for cracks or deformation. If found, replace the reservoir.
- Clean the reservoir with denatured alcohol, or equivalent.
- Dry the reservoir with non-lubricated, filtered air.
- Lubricate the new seals and the outer surface area of the reservoir-to-housing barrels with Delco Supreme 11® (GM P/N 12377967) or equivalent DOT-3 brake fluid from a clean, sealed brake fluid container.
- Install the lubricated seals, make sure they are fully seated.
- Install the reservoir to the master cylinder by pressing the reservoir straight down on the master cylinder until the pin holes are aligned.
- Carefully install the reservoir retaining pins to secure the reservoir.
- Place the brake fluid level sensor into the reservoir, press into place to secure the sensor retaining tabs.
- Remove the master cylinder from the vice.
- Install the master cylinder. Refer to Master Cylinder Replacement .
- Connect the electrical connector to the brake fluid level sensor.
- Release the park brake.
- Bleed the hydraulic brake system. Refer to Hydraulic Brake System Bleeding .
