GM Service Manual Online
For 1990-2009 cars only

Tools Required

J 35354-A Seal Installer

Removal Procedure

  1. Remove the crankshaft balancer. Refer to Crankshaft Balancer Replacement .

  2. Object Number: 153586  Size: SH

    Important: Be careful not to damage the crankshaft.

  3. Pry out the crankshaft front oil seal with a suitable tool such as a large screwdriver. Use care to avoid damaging the crankshaft front oil seal bore or the crankshaft front oil seal contact surfaces.
  4. Inspect the crankshaft balancer and engine front cover for scratches.

Installation Procedure


    Object Number: 153590  Size: SH
  1. Install the crankshaft front oil seal in the engine front cover using the J 35354-A .
  2. Tighten the bolt until the crankshaft front oil seal is seated in the engine front cover.
  3. Remove the J 35354-A .
  4. Install the crankshaft balancer. Refer to Crankshaft Balancer Replacement .
  5. Inspect for leaks.
  6. Perform the CKP system variation learn procedure. Refer to Crankshaft Position System Variation Learn in Engine Controls - 3.8L.