GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

  1. Place a drain pan under the vehicle to catch the power steering fluid.

  2. Object Number: 696040  Size: SH
  3. Remove the master cylinder retaining nuts and position the master cylinder (2) approximately six inches away from the hydro boost unit.
  4. Remove the power steering pressure outlet hose from the hydro boost unit.
  5. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .

  6. Object Number: 337376  Size: SH
  7. Remove the power steering pressure outlet hose (1) from the power steering gear.
  8. Remove the power steering pressure outlet hose (2) from the vehicle.

Installation Procedure


    Object Number: 337376  Size: SH
  1. Install the power steering pressure outlet hose (2) to the vehicle.
  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 power steering pressure outlet hose (1) to the power steering gear.
  4. Tighten
    Tighten the power steering pressure outlet hose to the power steering gear to 27 N·m (20 lb ft).

  5. Lower the vehicle.

  6. Object Number: 696040  Size: SH
  7. Install the power steering pressure outlet hose to the hydro boost unit.
  8. Tighten
    Tighten the power steering pressure outlet hose to the hydro boost unit to 30 N·m (22 lb ft).

  9. Position the master cylinder (2) to the hydro boost unit (1).
  10. Install the master cylinder retaining nuts.
  11. Tighten
    Tighten the master cylinder retaining nuts to 30 N·m (22 lb ft).

  12. Fill and bleed the power steering system. Refer to Power Steering System Bleeding .