GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 HUMMER 🢒 2009 🢒 H2 🢒 HVAC 🢒 Heating, Ventilation, and Air Conditioning 🢒 Power Steering Fluid Cooler Replacement

Removal Procedure
  1. Open the hood.
  2. Place a drain pan under the vehicle.
  3. Siphon the fluid from the reservoir to prevent excess spillage.

    4. Object Number: 1830697 Size: SH
  4. Loosen the upper bolt on the radiator support brace (1) and remove the lower bolt (2). Swing the support bracket aside.

    5. Object Number: 1830702 Size: SH

    Note: When pipes/hoses are disconnected, plug or cap all openings of components during service. Failure to do so could result in contamination or loss of power steering fluid and damage to the system.

  5. Disconnect the power steering cooler from the pipes at the fittings. Discard the O-ring seals.

    6. Object Number: 1830717 Size: SH

    Note: Do not discard the rubber spacer.

  6. Remove the power steering cooler retaining bolt from the core support.
  7. Remove the power steering cooler from the vehicle.
  8. Disconnect the power steering cooler inlet and outlet pipe routing clip from the core support.

    9. Object Number: 1830726 Size: SH
  9. Compress the clamp (1) and disconnect the power steering cooler outlet pipe/hose (2) from the power steering pump.

    10. Object Number: 1830728 Size: SH
  10. Disconnect the power steering cooler inlet hose fitting from the power steering gear. Discard the O-ring seal.
  11. Remove the cooler inlet and outlet pipes/hoses from the vehicle.

Installation Procedure
  1. Position the cooler inlet and outlet pipes/hoses to the vehicle.

    2. Caution: Refer to Fastener Caution in the Preface section.


    Object Number: 1830728 Size: SH
  2. Using a new O-ring seal, connect the power steering cooler inlet pipe/hose fitting to the power steering gear.

    3. Tighten
    Tighten the power steering cooler inlet pipe fitting to 28 N·m (20 lb ft).


    Object Number: 1830726 Size: SH
  3. Compress the clamp (1) and install the power steering cooler outlet pipe/hose (2) to the power steering pump.

    4. Object Number: 1830717 Size: SH
  4. Position the power steering cooler to the radiator support, install the spacer and the mounting bolt (1).

    5. Tighten
    Tighten the power steering cooler mounting bolt to 5 N·m (44 lb in).


    Object Number: 1830697 Size: SH
  5. Position the radiator support bracket to the original position and install the lower mounting bolt (2).

    6. Tighten
    Tighten the upper (1) and lower (2) radiator mounting bolts to 5 N·m (44 lb in).


    Object Number: 1830702 Size: SH
  6. Using a new O-ring seals, connect the power steering cooler inlet and outlet cooler pipes/hoses to the power steering cooler.

    7. Tighten
    Tighten the fittings to 28 N·m (20 lb ft).

  7. Fill and bleed the power steering system. Refer to Power Steering System Bleeding.
  8. Remove the drain pan from under the vehicle.
  9. Close the hood.