GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

Tools Required

J 41371 Reluctor Wheel Remover

  1. Open the hood.
  2. Caution: Before servicing any electrical component, the ignition and start switch must be in the OFF or LOCK position and all electrical loads must be OFF, unless instructed otherwise in these procedures. If a tool or equipment could easily come in contact with a live exposed electrical terminal, also disconnect the negative battery cable. Failure to follow these precautions may cause personal injury and/or damage to the vehicle or its components.

  3. Disconnect the battery negative cable from the battery. Refer to Battery Cable in Engine Electrical.
  4. Remove the crankshaft balancer from the crankshaft. Refer to Crankshaft Balancer Replacement .
  5. Remove the water pump from the engine block. Refer to Water Pump Replacement .
  6. Remove the engine front cover from the engine block. Refer to Engine Front Cover Replacement .

  7. Object Number: 181777  Size: SH
  8. Use the J 41371 to remove the reluctor ring from the crankshaft.

Installation Procedure

Important: Replace the crankshaft position sensor whenever the crankshaft position reluctor ring is replacement.


    Object Number: 65847  Size: SH
  1. Install the crankshaft position reluctor ring on to the crankshaft.
  2. Install the engine front cover to the engine block. Refer to Engine Front Cover Replacement .
  3. Install the water pump to the engine block. Refer to Water Pump Replacement .
  4. Install the crankshaft balancer to the crankshaft. Refer to Crankshaft Balancer Replacement .
  5. Connect the battery negative cable to the battery. Refer to Battery Cable in Engine Electrical.
  6. Close the hood.