GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 40858  Size: SH
  1. Disconnect the negative battery cable. Refer to

    Caution: Unless directed otherwise, the ignition and start switch must be in the OFF or LOCK position, and all electrical loads must be OFF before servicing any electrical component. Disconnect the negative battery cable to prevent an electrical spark should a tool or equipment come in contact with an exposed electrical terminal. Failure to follow these precautions may result in personal injury and/or damage to the vehicle or its components.

    in General Information.
  2. Disconnect the control solenoid electrical connector.

  3. Object Number: 40859  Size: SH
  4. Disconnect the hydraulic lines at the power steering system.

  5. Object Number: 40860  Size: SH
  6. Disconnect the pressure and the return hydraulic lines at the control valve.

  7. Object Number: 40861  Size: SH
  8. Remove the control solenoid and the mounting bracket.

Installation Procedure


    Object Number: 40861  Size: SH
  1. Install the control solenoid and the mounting bracket.

  2. Object Number: 40860  Size: SH
  3. Connect the pressure and the return hydraulic lines at the control valve.

  4. Object Number: 40859  Size: SH
  5. Connect the hydraulic lines at the power steering system.

  6. Object Number: 40858  Size: SH
  7. Connect the control solenoid electrical connector.
  8. Connect the negative battery cable.