GM Service Manual Online
For 1990-2009 cars only

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

Disassembly Procedure


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

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

Assembly 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
  4. Install the O-ring seal (3) to the connector and fitting assembly (4).
  5. Notice: Refer to Fastener Notice in the Preface section.

  6. Install the connector and fitting assembly (4) to the pump housing (1).
  7. Tighten
    Tighten the connector and fitting assembly (4) to 75 N·m (55 lb ft).