GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

Caution: Always use double walled steel brake pipe when replacing brake pipes. The use of any other pipe is not recommended and may cause brake system failure. Carefully route and retain replacement brake pipes. Always use the correct fasteners and the original location for replacement brake pipes. Failure to properly route and retain brake pipes may cause damage to the brake pipes and cause brake system failure.


    Object Number: 179423  Size: SH
  1. Remove the left front brake pipe (2) from the brake hose. Use a backup wrench on the hose fitting in order to remove the brake pipe from the brake hose.
  2. Remove the right front brake pipe (3) from the brake hose. Use a backup wrench on the hose fitting in order to remove the brake pipe from the brake hose.
  3. Remove the four brake pipes from the Brake Modulator/Master Cylinder Assembly.
  4. Remove the brake pipes from the retaining clips.

  5. Object Number: 179274  Size: SH
  6. Remove the left rear brake pipe from the brake hose. Use a backup wrench on the hose fitting in order to remove the brake pipe from the brake hose.
  7. Remove the right rear brake pipe (3) from the brake hose. Use a backup wrench on the hose fitting in order to remove the brake pipe from the brake hose.
  8. Remove the brake pipes from the retaining clips (2) (1).

Installation Procedure


    Object Number: 179274  Size: SH
  1. Install the brake pipes into the retaining clips (2) (1).
  2. Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

  3. Install the right rear brake pipe (3) to the brake hose. Use a backup wrench on the hose fitting.
  4. Tighten
    Tighten the brake pipe tube nut to 15 N·m (11 lb ft).

  5. Install the left rear brake pipe to the brake hose. Use a backup wrench on the hose fitting.
  6. Tighten
    Tighten the brake pipe tube nut to 15 N·m (11 lb ft).


    Object Number: 179423  Size: SH
  7. Install the brake pipes into the retaining clips.
  8. Install the four brake pipes into the Brake Modulator/Master Cylinder Assembly.
  9. Tighten
    Tighten the modulator tube nuts to 15 N·m (11 lb ft).

  10. Install the right front brake pipe (3) to the brake hose. Use a backup wrench on the hose fitting.
  11. Tighten
    Tighten the brake pipe tube nut to 15 N·m (11 lb ft).

  12. Install the left front brake pipe (2) to the brake hose. Use a backup wrench on the hose fitting.
  13. Tighten
    Tighten the brake pipe tube nut to 15 N·m (11 lb ft).

  14. Bleed the brakes. Refer to Hydraulic Brake System Bleeding .