GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

Notice: Do not start the vehicle with any power steering gear inlet or outlet hoses disconnected. When disconnected, plug or cap all openings of components. Failure to do so could result in contamination or loss of power steering fluid and damage to the system.

  1. Remove the air cleaner assembly. Refer to Air Cleaner Assembly Replacement in Engine Controls - 4.3L.
  2. Install a drain pan under the vehicle.

  3. Object Number: 543829  Size: SH
  4. Disconnect the power steering cooler hoses from the power steering cooler.
  5. Remove the radiator air intake baffle. Refer to Air Intake Baffle Replacement - Radiator in Body Front End.

  6. Object Number: 395849  Size: SH
  7. Remove the power steering cooler mounting bolts.

  8. Object Number: 395850  Size: SH
  9. Remove the power steering cooler from the radiator support.

Installation Procedure

Notice: The inlet and outlet hoses must not be twisted during installation. Do not bend or distort the inlet or outlet hoses to make installation easier. Failure to follow these procedures could result in component damage.


    Object Number: 395850  Size: SH
  1. Install the power steering cooler to the radiator core support.

  2. Object Number: 395849  Size: SH

    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 cooler mounting bolts.
  4. Tighten
    Tighten the power steering cooler mounting bolts to 10 N·m (7 lb ft).

  5. Install the radiator air intake baffle. Refer to Air Intake Baffle Replacement - Radiator in Body Front End.

  6. Object Number: 543829  Size: SH
  7. Connect the power steering cooler hoses to the power steering cooler.
  8. Tighten
    Tighten the power steering cooler hose to the power steering cooler clamps to 2 N·m (18 lb in).

  9. Remove the drain pan from under the vehicle.
  10. Install the air cleaner assembly. Refer to Air Cleaner Assembly Replacement in Engine Controls - 4.3L.
  11. Bleed the power steering system. Refer to Power Steering System Bleeding .