GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

Tools Required

J 39046 Crankshaft Balancer Hub Remover and Installer


    Object Number: 11440  Size: SH
  1. Remove the air intake duct.
  2. Remove the drive belt. Refer to Drive Belt Replacement .
  3. Raise and support the vehicle. Refer to SECTION 0A.

  4. Object Number: 11499  Size: SH
  5. Remove the engine mount nuts.
  6. Remove the power steering fluid cooler. Refer to SECTION 3B.
  7. Raise the engine so that you can access the balancer with the J 39046 .

  8. Object Number: 11500  Size: SH
  9. Remove the crankshaft balancer bolts.
  10. Remove the crankshaft balancer.
  11. Remove the power steering line from the steering gear. Refer to SECTION 3.
  12. Matchmark the crankshaft hub to engine front cover.
  13. • Do not crank the engine over after you match-mark the crankshaft hub and the engine front cover.
    • Rotating the crankshaft will misalign the installation of the balancer to the crankshaft and may result in engine imbalance.

    Object Number: 11501  Size: SH
  14. Remove the crankshaft balancer hub bolt and washer.
  15. Use the J 39046 in order to remove the crankshaft balancer hub.

Installation Procedure

Tools Required

J 39046 Crankshaft Balancer Hub Remover and Installer

    Notice: Failure to properly align the crankshaft position sensor reluctor ring may result in component damage and effect OBD II system performance.


    Object Number: 11501  Size: SH
  1. The crankshaft hub can be installed by a different procedure if the engine should accidentally be cranked over after matchmarking the hub and the engine front cover.
  2. 1.1. Set the number 1 piston to the top dead center.
    1.2. While viewing from the front of the crankshaft, check the reluctor ring and verify that the keyway of the ring is properly oriented with the key of the crankshaft and that the ring is completely seated against the crankshaft sprocket.
    1.3. Install the crankshaft balancer hub with the cast arrow on the hub in the 12 o'clock position.
  3. Use the J 39046 in order to install the crankshaft balancer hub.
  4. Install the crankshaft hub washer.
  5. Install the crankshaft hub bolt.
  6. Raise the engine.
  7. Important: When you replace the crankshaft balancer, be sure that you install new balancer weights of the same size, and install the new balancer in the same location as the old balancer.


    Object Number: 11500  Size: SH
  8. Install the crankshaft balancer.
  9. Install the crankshaft balancer bolts.
  10. Tighten
    Tighten the crankshaft balancer hub bolt to 100 N·m (74 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.

  11. Install the power steering line to the steering gear. Refer to SECTION 3B.
  12. Lower the engine.
  13. Install the power steering fluid cooler. Refer to SECTION 3B.

  14. Object Number: 11499  Size: SH
  15. Install the engine mount nuts.
  16. Tighten
    Tighten the engine mount nuts to 54 N·m (40 lb ft).

  17. Lower the vehicle.
  18. Install the drive belt. Refer to Drive Belt Replacement .

  19. Object Number: 11440  Size: SH
  20. Install the air intake duct.