GM Service Manual Online
For 1990-2009 cars only

Power Steering Fluid Cooler Replacement 4.3L

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.


    Object Number: 395851  Size: SH
  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. Disconnect the power steering cooler hoses from the power steering cooler.
  4. Remove the Grille. Refer to Grille Replacement in Exterior Trim.

  5. Object Number: 593979  Size: SH
  6. Remove the radiator air intake baffle retaining clips from LH side.
  7. Position the radiator air intake baffle out of the way.

  8. Object Number: 1561  Size: SH
  9. Remove the hood latch support mounting bolts.
  10. Move the hood latch support forward.

  11. Object Number: 395849  Size: SH
  12. Remove the power steering cooler retaining bolts.

  13. Object Number: 395850  Size: SH
  14. 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 retaining bolts.
  4. Tighten
    Tighten the power steering cooler retaining bolts to 10 N·m (7 lb ft).


    Object Number: 1561  Size: SH
  5. Reposition the hood latch support to the radiator core support.
  6. Install the hood latch support mounting bolts.
  7. Tighten
    Tighten the hood latch support mounting bolts to 25 N·m (18 lb ft).


    Object Number: 593979  Size: SH
  8. Reposition the radiator air intake baffle to the radiator core support.
  9. Install the radiator air intake baffle retaining clips to the LH side.
  10. Install the grille. Refer to Grille Replacement in Exterior Trim.

  11. Object Number: 395851  Size: SH
  12. Connect the power steering cooler hoses to the power steering cooler.
  13. Tighten
    Tighten the power steering cooler hoses to the power steering cooler clamps to 2 N·m (18 lb in).

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

Power Steering Fluid Cooler Replacement 2.2L

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.


    Object Number: 395851  Size: SH
  1. Remove the air cleaner assembly.
  2. Install a drain pan under the vehicle.
  3. Disconnect the power steering cooler hoses from the power steering cooler.
  4. Remove the grille. Refer to Grille Replacement in Exterior Trim.

  5. Object Number: 593979  Size: SH
  6. Remove the radiator air intake baffle retaining clips from LH side.
  7. Position the radiator air intake baffle out of the way.

  8. Object Number: 1561  Size: SH
  9. Remove the hood latch support mounting bolts.
  10. Move the hood latch support forward.

  11. Object Number: 395849  Size: SH
  12. Remove the power steering cooler retaining bolts.

  13. Object Number: 395850  Size: SH
  14. 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 retaining bolts.
  4. Tighten
    Tighten the power steering cooler retaining bolts to 10 N·m (7 lb ft).


    Object Number: 1561  Size: SH
  5. Reposition the hood latch support to the radiator core support.
  6. Install the hood latch support mounting bolts.
  7. Tighten
    Tighten the hood latch support mounting bolts to 25 N·m (18 lb ft).


    Object Number: 593979  Size: SH
  8. Reposition the radiator air intake baffle to the radiator core support.
  9. Install the radiator air intake baffle retaining clips to the LH side.
  10. Install the grille. Refer to Grille Replacement in Exterior Trim.

  11. Object Number: 395851  Size: SH
  12. Connect the power steering cooler hoses to the power steering cooler.
  13. Tighten
    Tighten the power steering cooler hose clamps to 2 N·m (18 lb in).

  14. Remove the drain pan from under the vehicle.
  15. Install the air cleaner assembly.
  16. Bleed the power steering system. Refer to Power Steering System Bleeding .