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For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 1998 🢒 Sonoma Pickup - 2WD 🢒 Steering 🢒 Power Steering System 🢒 Power Steering Pump Flow Control Valve Replacement - Off Vehicle

Power Steering Pump Flow Control Valve Replacement - Off Vehicle CB Series

Removal Procedure
  1. Remove the power steering pump from the vehicle. Refer to Power Steering Pump Replacement .

    2. Object Number: 448006 Size: SH
  2. Remove the connector and fitting assembly (4).
  3. Remove the O-ring seal (3).

    4. Object Number: 448001 Size: SH
  4. Remove the control valve assembly (3) and the flow control spring (2) from the pump housing assembly (1).

Installation Procedure

    Object Number: 448001 Size: SH
  1. Install the flow control spring (2) to the pump housing assembly (1).
  2. Install the control valve assembly (3) to the flow control spring (2).

    3. Object Number: 448006 Size: SH
  3. Lubricate the O-ring seal (3) using power steering fluid.
  4. Install the O-ring seal (3).

    5. 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. Install the connector and fitting assembly (3) to the pump housing (1).

    6. Tighten
    Tighten the connector and fitting assembly (3) to 75 N·m (55 lb ft).

  6. Install the power steering pump. Refer to Power Steering Pump Replacement .

Power Steering Pump Flow Control Valve Replacement - Off Vehicle P Series

Removal Procedure
  1. Remove the power steering pump from the vehicle. Refer to Power Steering Pump Replacement .

    2. Object Number: 447978 Size: SH
  2. Drain the power steering fluid from the power steering pump.
  3. Remove the pump mounting studs (2).
  4. Remove the connector and fitting assembly (4).
  5. Remove the O-ring seal (3).

    6. Object Number: 447980 Size: SH
  6. Remove the control valve assembly (3) and the flow control spring (2) from the pump housing assembly (1).

Installation Procedure

    Object Number: 447980 Size: SH
  1. Install the flow control spring (2) to the pump housing assembly (1).
  2. Install the control valve assembly (3) to the flow control spring (2).

    3. Object Number: 447978 Size: SH
  3. Install the O-ring seal (3) to the pump housing assembly (1).
  4. Install the connector and fitting assembly (4) to the pump housing (1).

    5. 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. Install the pump mounting studs (2) to the pump housing (1).

    6. Tighten

        • Tighten the pump mounting studs (2) to 35-80 N·m (29-59 lb ft).
        • Tighten the connector and fitting assembly (4) to 75 N·m (55 lb ft).
  6. Install the power steering pump to the vehicle. Refer to Power Steering Pump Replacement .