GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

Important: Do not overtighten the vise, or damage to the master cylinder will result.

  1. Remove the master cylinder. Refer to Master Cylinder Replacement .
  2. Remove the caps.
  3. Drain the brake fluid from the reservoir.
  4. Clamp the flange of the master cylinder body in a vise. Do not clamp the master cylinder body.
  5. Remove the reservoir mounting bolts.
  6. Remove the reservoir.

  7. Object Number: 734710  Size: SH
  8. Remove the O-rings.
  9. Inspect the reservoir for cracks or deformation. Replace the reservoir if necessary.
  10. Clean the reservoir with clean denatured alcohol.
  11. Dry the reservoir with non-lubricated compressed air.

Installation Procedure


    Object Number: 734710  Size: SH
  1. Lubricate the new O-rings and the reservoir-to-housing fittings with clean brake fluid.
  2. Insert the O-rings into the grooves in the reservoir. Make sure that the O-rings are properly seated.
  3. Install the reservoir to the master cylinder body.
  4. Install the reservoir mounting bolts.
  5. Install the caps.
  6. Install the master cylinder. Refer to Master Cylinder Replacement .