GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

Tools Required

J 5590 Installer


    Object Number: 45986  Size: SH
  1. Remove the engine front cover. Refer to Engine Front Cover Replacement .
  2. Remove the crankshaft position sensor reluctor ring.

Installation Procedure


    Object Number: 45986  Size: SH

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

    Important: The reluctor ring is shaped like a dish.

    The dish must face the engine front cover. Failure to do so will damage the front cover and the reluctor ring.

  1. Install the crankshaft position sensor reluctor ring.
  2. 1.1. Align the keyway on the crankshaft position sensor reluctor ring with the crankshaft balancer key in the crankshaft.
    1.2. Use the J 5590 in order to push the crankshaft position sensor reluctor ring onto the crankshaft until completely seated against the crankshaft sprocket.
  3. Install the engine front cover. Refer to Engine Front Cover Replacement .