GM Service Manual Online
For 1990-2009 cars only

Frame Mounted Power Steering Cooler

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.

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.

Removal Procedure


    Object Number: 245032  Size: LH
  1. Install a drain pan under the vehicle.
  2. Siphon the power steering fluid from the reservoir to prevent excessive spillage.
  3. Remove the power steering cooler (6) from the power steering gear.
  4. Remove the power steering cooler (6) from the power steering pump.
  5. Remove the front bumper. Refer to Front Bumper Fascia Replacement .
  6. Remove the front center filler panel. Refer to Front Bumper Center Filler Replacement .
  7. Raise the vehicle.

  8. Object Number: 409049  Size: SH
  9. Remove the engine shield bolts (1) and washers (2).
  10. Remove the engine shield (4).
  11. Remove the power steering cooler bracket bolt.
  12. Remove the power steering cooler from the vehicle.

Installation Procedure

  1. Route the cooler in the same position the cooler occupied prior to removal.
  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 cooler bracket bolt.
  4. Tighten
    Tighten the power steering cooler bracket bolt to 5 N·m (4 lb ft).


    Object Number: 409049  Size: SH
  5. Install the engine shield (4).
  6. Install the engine shield washers (2) and bolts (1).
  7. Tighten
    Tighten the engine shield bolts to 34 N·m (25 lb ft).

  8. Lower the vehicle.
  9. Install the front center filler panel. Refer to Front Bumper Center Filler Replacement .
  10. Install the front bumper. Refer to Front Bumper Replacement .

  11. Object Number: 245032  Size: LH
  12. Position the clamp on the pump end of the power steering cooler (6).
  13. Install the power steering cooler (6) to the power steering pump.
  14. Tighten
    Tighten the clamp on the power steering cooler (6). Fully crimp the clamp until zero gap between both halves is achieved prior to springback.

  15. Install the power steering cooler (6) to the power steering gear.
  16. Tighten
    Tighten the power steering cooler (6) at the power steering gear to 27 N·m (20 lb ft).

  17. Remove the drain pan from under the vehicle.
  18. Bleed the power steering system. Refer to Power Steering System Bleeding .

Fin Type Power Steering Cooler

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.

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.

Removal Procedure


    Object Number: 407071  Size: SH
  1. Install a drain pan under the vehicle.
  2. Siphon the power steering fluid from the reservoir to prevent excessive spillage.
  3. Remove the washer solvent container.
  4. Remove the power steering cooler line (4) from the power steering gear.
  5. Remove the power steering cooler line (3) from the power steering pump.
  6. Remove the power steering hose clip from the radiator support.
  7. Remove the front center filler panel. Refer to Front Bumper Center Filler Replacement .
  8. Remove the power steering cooler bracket screws.
  9. Remove the power steering cooler from the vehicle.

Installation Procedure


    Object Number: 407071  Size: SH
  1. Route the cooler in the same position the cooler occupied prior to removal.
  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 cooler bracket screws.
  4. Tighten
    Tighten the power steering cooler bracket screws to 8 N·m (6 lb ft).

  5. Position the clamp on the pump end of the power steering cooler (6).
  6. Install the power steering cooler (6) to the power steering pump.
  7. Tighten
    Tighten the clamp on the power steering cooler (6). Fully crimp the clamp until zero gap between both halves is achieved prior to springback.

  8. Install the power steering cooler (6) to the power steering gear.
  9. Tighten
    Tighten the power steering cooler (6) at the power steering gear to 27 N·m (20 lb ft).

  10. Install the front center filler panel. Refer to Front Bumper Center Filler Replacement .
  11. Install the power steering hose clip to the radiator support.
  12. Install the washer solvent container.
  13. Remove the drain pan from under the vehicle.
  14. Bleed the power steering system. Refer to Power Steering System Bleeding