GM Service Manual Online
For 1990-2009 cars only

    Object Number: 66576  Size: SH
  1. Install the oil cooler bypass valve using a socket the same size as the outside diameter of the valve. Drive the valve into the bore until the valve seats on the shoulder in the bore.
  2. Important: The cup plug has an orifice hole that prevents an air lock from occurring and blocking the oil flow.

  3. Install the cup plug for the oil cooler bypass valve.
  4. Install the oil filter bypass valve using a socket the same size as the outside diameter of the valve. Drive the valve into the bore until the valve seats on the shoulder in the bore.

  5. Object Number: 181988  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.

  6. Install the oil filter fitting.
  7. Tighten
    Tighten the oil filter fitting to 42 N·m (31 lb ft).