GM Service Manual Online
For 1990-2009 cars only

Special Tools

    • EN 46103 Camshaft Actuator Valve Seal Remover/Installer
    • EN 47635 Output Shaft Seal Installer

For equivalent regional tools, refer to Special Tools.


    Object Number: 1408429  Size: SH

    Note: Do not lubricate the crankshaft front oil seal or crankshaft balancer sealing surfaces. The crankshaft balancer is installed into a dry seal.

  1. Install the NEW crankshaft front oil seal into the engine front cover using the EN 47635 installer .

  2. Object Number: 1579266  Size: SH
  3. Place the seal into position with the notches (1) in the seal down. The notches (1) will face inboard when properly installed.

  4. Object Number: 1408431  Size: SH
  5. Install the NEW camshaft position actuator valve oil seals into the engine front cover using the EN 46103 installer .