GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

Tools Required

J 5590 Installer


    Object Number: 344274  Size: SH
  1. Remove the engine front cover. Refer to Engine Front Cover Replacement .

  2. Object Number: 69450  Size: SH
  3. Remove the reluctor ring from the crankshaft position sensor.

Installation Procedure


    Object Number: 69450  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 engine front cover and the reluctor ring.

  1. Install the reluctor ring to the crankshaft position sensor.
  2. 1.1. Align the keyway on the crankshaft position sensor reluctor ring with the woodruff key (crankshaft balancer) 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.

    Object Number: 344274  Size: SH
  3. Install the engine front cover. Refer to Engine Front Cover Replacement .