Brake Fluid Reservoir: Service and Repair

Master Cylinder Reservoir Replacement

Removal Procedure
Warning: Refer to Brake Fluid Irritant Warning Brake Fluid Irritant Warning.


Caution: Refer to Brake Fluid Effects on Paint and Electrical Components Caution Vehicle Damage Warnings.

1. Using a suitable tool, remove and properly discard the brake fluid from the master cylinder reservoir.
2. Without draining the coolant or removing the hoses, remove and position aside the radiator surge tank. Refer to Radiator Surge Tank Replacement (LF1,LFW, or LFX) Radiator Surge Tank Replacement.





Note: Lift the dash panel insulator slightly to remove the upper master cylinder heat shield nut.

3. If equipped with the master cylinder heat shield, remove the master cylinder heat shield nuts (1).




4. Remove the master cylinder heat shield bolt (1).
5. Remove the master cylinder heat shield.
6. Disconnect the brake fluid level indicator switch electrical connector.




7. Remove the master cylinder reservoir bolt (1).




8. Lift the master cylinder reservoir (1) upward to release the reservoir from the reservoir seals and the master cylinder.




9. Remove the 2 master cylinder reservoir seals (1).

Installation Procedure

1. Lubricate the master cylinder reservoir seals with GM approved brake fluid from a clean, sealed, brake fluid container.





Note: Ensure the reservoir seals are fully seated in the master cylinder.

2. Install the 2 master cylinder reservoir seals (1).





Note: Ensure the master cylinder reservoir is fully seated in the master cylinder.

3. Firmly and squarely press the master cylinder reservoir (1) into the master cylinder.





Caution: Refer to Fastener Caution Fastener Caution.

4. Install the master cylinder reservoir bolt (1) and tighten to 6 Nm (53 lb in).
5. Connect the brake fluid level indicator switch electrical connector.
6. Install the master cylinder heat shield, if equipped.




7. Install the master cylinder heat shield bolt (1) and tighten to 10 Nm (89 lb in).





Note: Lift the dash panel insulator slightly to install the upper master cylinder heat shield nut.

8. Install the master cylinder heat shield nuts (1) and tighten to 25 Nm (18 lb ft).
9. Install the radiator surge tank. Refer to Radiator Surge Tank Replacement (LF1,LFW, or LFX) Radiator Surge Tank Replacement.
10. Fill the master cylinder reservoir. Refer to Master Cylinder Reservoir Filling Master Cylinder Reservoir Filling.