GM Service Manual Online
For 1990-2009 cars only

Power Steering Hoses Replacement RWD

Removal Procedure

    Important: Note the position of all the tie-wraps and the hose insulators for proper re-installation.

  1. Remove the tie-wraps and the hose insulators.

  2. Object Number: 473056  Size: MH
  3. Disconnect the pressure hose from the variable assist actuator.
  4. Disconnect the pressure hose from the hydrualic brake booster inlet.
  5. Disconnect the pressure hose from the hydraulic brake booster outlet.
  6. Disconnect the pressure hose from the steering gear.

  7. Object Number: 473061  Size: SH
  8. Disconnect the pressure hose from the rear of the power steering pump.
  9. Disconnect the pressure hose from the steering gear.

Installation Procedure

Notice: Do not start the engine with any power steering hose disconnected, or damage to the components could occur.

    Important: Observe the following when reinstalling or replacing a hose:

       • Route the hoses in the proper position.
       • Route the hoses smoothly. Avoid sharp bends and kinking.
       • Install all tie wraps and hose insulators in their original positions. Failure to do so may cause unwanted noise, vibration, or harshness in the passenger compartment.


    Object Number: 473061  Size: SH
  1. Connect the pressure hose to the steering gear.
  2. Connect the pressure hose to the rear of the power steering pump.

  3. Object Number: 473056  Size: MH
  4. Connect the pressure hose to the hydraulic brake booster outlet.
  5. Connect the pressure hose to the power steering gear.
  6. Connect the pressure hose to the hydraulic brake booster inlet.
  7. 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.

  8. Connect the pressure hose to the variable assist actuator.
  9. Tighten
    Tighten the hose fittings to 27 N·m (20 lb ft).

  10. Install the tie wraps and the hose insulators.
  11. Bleed the system. Refer to Power Steering System Bleeding .

Power Steering Hoses Replacement F4WD

Removal Procedure

    Important: Note the position of all the tie-wraps and the hose insulators for proper re-installation.

  1. Remove the tie-wraps and the hose insulators.

  2. Object Number: 473056  Size: MH
  3. Disconnect the pressure hose from the variable assist actuator.
  4. Disconnect the pressure hose from the hydrualic brake booster inlet.
  5. Disconnect the pressure hose from the hydraulic brake booster outlet.
  6. Disconnect the pressure hose from the steering gear.

Installation Procedure

Notice: Do not start the engine with any power steering hose disconnected, or damage to the components could occur.

Important: Observe the following when reinstalling or replacing a hose:

   • Route the hoses in the proper position.
   • Route the hoses smoothly. Avoid sharp bends and kinking.
   • Install all tie wraps and hose insulators in their original positions. Failure to do so may cause unwanted noise, vibration, or harshness in the passenger compartment.


    Object Number: 473056  Size: MH
  1. Connect the pressure hose to the hydraulic brake booster outlet.
  2. Connect the pressure hose to the power steering gear.
  3. Connect the pressure hose to the hydraulic brake booster inlet.
  4. 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.

  5. Connect the pressure hose to the variable assist actuator.
  6. Tighten
    Tighten the hose fittings to 27 N·m (20 lb ft).

  7. Install the tie wraps and the hose insulators.
  8. Bleed the system. Refer to Power Steering System Bleeding .