GM Service Manual Online
For 1990-2009 cars only

Repair Procedure

Notice: If any brake component is repaired or replaced such that air is allowed to enter the brake system, the entire bleeding procedure must be followed.


    Object Number: 641257  Size: SH
  1. Remove the proportioning valve (1) from the brake line.
  2. Plug the brake line to prevent excess brake fluid loss.

Instalation Procedure


    Object Number: 641257  Size: SH
  1. Install the porportioning valve (1) to the brake line.
  2. Tighten
    Tighten the proportioning valve to 15 (11 lb ft).

  3. Bleed the brake system as necessary. Refer to Hydraulic Brake System Bleeding .