GM Service Manual Online
For 1990-2009 cars only
  1. Siphon brake fluid from the reservoir.
  2. Clean any dirt and foreign materials from the brake pipes and fittings.
  3. Remove the three brake pipes from the proportioning valve.
  4. Remove the one bolt and the proportioning valve
  1. Install the proportioning valve to the cowl. Secure with one bolt.
  2. Tighten
    Tighten the bolt to 10 N·m (89 lb in).

  3. Install the three brake pipes to the proportioning valve.
  4. Bleed the brake system. Refer to Hydraulic Brake System Bleeding .