GM Service Manual Online
For 1990-2009 cars only

Tools Required

J 45951 Front Seal Installer

Removal Procedure

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

  2. Object Number: 637775  Size: SH

    Important: Do not damage the engine front cover or the crankshaft.

  3. Pry out the crankshaft front oil seal using a suitable tool.
  4. Discard the seal.

Installation Procedure


    Object Number: 637775  Size: SH
  1. Apply the engine oil to the outside diameter of the crankshaft front oil seal.

  2. Object Number: 1243917  Size: SH
  3. Use the J 45951 to install the NEW crankshaft front oil seal.
  4. Remove the J 45951 .
  5. Install the crankshaft balancer. Refer to Crankshaft Balancer Replacement .