GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2003 🢒 Blazer - 2WD 🢒 Engine 🢒 Engine Electrical 🢒 Oil Filter Adapter Replacement

Removal Procedure
  1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  2. Position a suitable container to catch the engine oil.

    3. Object Number: 344214 Size: SH
  3. Remove the engine oil cooler pipe bolt from the oil filter adapter.
  4. Remove the engine oil cooler adapter pipes and seals from the oil filter adapter.
  5. Remove the engine oil filter (except Four Wheel Drive vehicle).

    6. Object Number: 4554 Size: SH
  6. Remove oil filter adapter bolts.

    7. Object Number: 4555 Size: SH
  7. Remove the oil filter adapter and the oil filter adapter gasket.
  8. Discard the oil filter adapter gasket.

    9. Object Number: 4556 Size: SH
  9. Remove the oil filter adapter seal (O-ring).
  10. Discard the oil filter adapter seal (O-ring).

Installation Procedure

    Object Number: 4556 Size: SH
  1. Install the new oil filter adapter seal (O-ring) into the groove on the oil filter adapter.

    2. Object Number: 4555 Size: SH
  2. Install the oil filter adapter and a new oil filter adapter gasket.

    3. Object Number: 4554 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.

  3. Install the oil filter adapter bolts.

    4. Tighten
    Tighten the oil filter adapter bolts to 21 N·m (15 lb ft).


    Object Number: 344214 Size: SH
  4. Install the oil filter adapter pipe seals and pipes to the oil filter adapter.
  5. Install the oil filter adapter pipe bolt.

    6. Tighten
    Tighten the oil filter adapter pipe bolt to 35 N·m (26 lb ft).

  6. Install the engine oil filter (except Four Wheel Drive vehicles). Refer to Engine Oil and Oil Filter Replacement .
  7. Lower the vehicle.
  8. Operate the engine and check for leaks.
  9. Inspect the engine oil level and fill to the proper level.