GM Service Manual Online
For 1990-2009 cars only

    Object Number: 660543  Size: SH
  1. Install the piston oil cooling nozzle.

  2. Object Number: 663810  Size: SH

    Notice: The piston oil cooling nozzle must be aligned to direct oil towards the oil inlet hole on the bottom of the piston. Improper alignment of the piston oil cooling nozzle will allow insufficient oil lubrication to the piston and cause severe engine damage.

    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 piston oil cooling nozzle bolt.
  4. Tighten
    Tighten the piston oil cooling nozzle bolts to 21 N·m (15 lb ft).