GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 2000 🢒 LeSabre 🢒 Brakes 🢒 Hydraulic Brakes 🢒 Master Cylinder Reservoir Replacement

Removal Procedure

    Object Number: 153127 Size: SH
  1. Remove the electrical connector from the fluid level sensor.
  2. Remove the fluid level sensor. Refer to Brake Fluid Level Indicator Switch Replacement .
  3. Drain the brake fluid from the master cylinder reservoir.
  4. Tap back the pins until clear of reservoir. Care must be taken to prevent damage to the reservoir or master cylinder.
  5. Remove the reservoir.
  6. Remove the seals.
  7. Inspect the reservoir for cracks or deformities. If found, replace the reservoir.
  8. Clean the reservoir. Use clean denatured alcohol.
  9. Dry the reservoir. Use non-lubricated compressed air.

Installation Procedure

    Object Number: 153127 Size: SH
  1. Lubricate the new seals and the reservoir bayonets with clean brake fluid.
  2. Install the seals to the master cylinder, making sure they are fully seated.
  3. Install the reservoir onto the master cylinder by pressing straight down by hand until pin holes are aligned.

    4. Object Number: 176838 Size: SH
  4. Tap in the pins to retain the reservoir. Care must be taken to prevent damage to the reservoir or master cylinder.
  5. Fill the master cylinder reservoir to full level mark using only Delco® Supreme II Brake Fluid GM P/N 12377967, or equivalent DOT 3 brake fluid, as specified in Maintenance and Lubrication.
  6. Install the fluid level sensor. Refer to Brake Fluid Level Indicator Switch Replacement .
  7. Install the electrical connector to fluid sensor.
  8. Bleed the hydraulic system. Refer to Hydraulic Brake System Bleeding .