GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

Oil Filter Bypass Valve


    Object Number: 39122  Size: SH
  1. Remove the oil filter.
  2. Remove the bolts.
  3. Remove the oil filter bypass valve.
  4. Inspect the bypass valve spring and valve disc for proper operation, cracks, and damage. If replacement is needed, the oil filter bypass valve must be replaced.
  5. Clean the valve chamber in the block.

Oil Filter Adapter


    Object Number: 66193  Size: SH
  1. Remove the oil filter.
  2. Remove the oil cooler lines.
  3. Remove the bolts.
  4. Remove the oil filter adapter.
  5. Remove the gasket and seal.

Installation Procedure

Oil Filter Bypass Valve


    Object Number: 39122  Size: SH
  1. Install the oil filter bypass valve.
  2. Install the bolts.
  3. Tighten
    Tighten the bolts to 26 N·m (20 lb ft).

    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.

  4. Install the oil filter.
  5. Install the engine oil, as needed.

Oil Filter Adapter


    Object Number: 66193  Size: SH
  1. Install the oil filter adapter gasket.
  2. Install the oil filter adapter.
  3. Install the bolts.
  4. Tighten
    Tighten the bolts to 20 N·m (18 lb ft).

  5. Install the oil cooler lines.
  6. Install the oil filter.
  7. Install the engine oil, as needed.