GM Service Manual Online
For 1990-2009 cars only

    Object Number: 815395  Size: SH

    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.

  1. Install the vacuum brake booster fitting from the intake plenum.
  2. Tighten
    Tighten the vacuum brake booster fitting to 25 N·m (18 lb ft).


    Object Number: 815393  Size: SH
  3. Install the intake plenum tuning valve, intake plenum tuning solenoid and O-ring.
  4. Install the intake plenum tuning valve bolts.
  5. Tighten
    Tighten the intake plenum tuning valve bolts to 8 N·m (71 lb in).

  6. Install the intake plenum tuning solenoid bolts.
  7. Tighten
    Tighten the intake plenum tuning solenoid bolts to 8 N·m (71 lb in).