CTS-V V8-6.0L VIN U (2006)
Brake Master Cylinder: Service and Repair
Master Cylinder Replacement
Master Cylinder Replacement
Caution: Refer to in Brake Fluid Irritant Caution in Service Precautions.
Notice: Refer to Brake Fluid Effects on Paint and Electrical Components Notice in Service Precautions.
Removal Procedure
1. Disconnect the electrical connector from the brake fluid level sensor.
2. Disconnect the brake pipes from the master cylinder.
3. Plug the open brake pipe fitting ends.
Important: Install a rubber cap or plug to the exposed brake pipe fitting end in order to prevent brake fluid loss and contamination.
4. Remove the 2 master cylinder mounting nuts.
5. Remove the master cylinder.
6. Remove the reservoir from the master cylinder if it is to be reused on a replacement master cylinder.
Installation Procedure
1. Install the brake master cylinder reservoir to the master cylinder if it was removed previously.
2. Bench bleed the master cylinder.
3. Install the master cylinder to the vacuum brake booster.
4. Install the 2 brake master cylinder mounting nuts.
Tighten the 2 brake master cylinder mounting nuts to 25 Nm (18 ft. lbs.).
Notice: Refer to Fastener Notice in Service Precautions.
5. Remove the plugs from the brake pipes.
6. Install the brake pipes to the master cylinder.
Tighten the brake pipe fittings at the master cylinder to 38 Nm (28 ft. lbs.).
7. Connect the electrical connector to the brake fluid level sensor.
8. Bleed the hydraulic brake system.
