GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 21396  Size: SH
  1. Disconnect the electrical connector from the switchover solenoid.
  2. Disconnect the vacuum hoses from the switchover solenoid and the switchover valve.
  3. Remove the intake plenum switchover solenoid to plenum bolts
  4. Remove the switchover solenoid (1) from the intake plenum.

Installation Procedure


    Object Number: 21396  Size: SH
  1. Install the switchover solenoid (1) on the intake plenum.
  2. 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 intake plenum switchover solenoid to plenum bolts.
  4. Tighten
    Tighten the bolts to 8 N·m (71 lb in).

  5. Connect the vacuum hoses to the switchover solenoid and the switchover valve.
  6. Connect the electrical connector to the switchover solenoid.