GM Service Manual Online
For 1990-2009 cars only

Special Tools

EN 46105 Camshaft Locking Tool


    Object Number: 1306492  Size: SH
  1. Remove the EN 46105-1 from the right camshafts.
  2. Position the camshaft lobes in a neutral position.

  3. Object Number: 1306311  Size: SH
  4. Observe the markings on the bearing caps. Each bearing cap is marked in order to identify its location. The markings have the following meanings:
  5. • The raised feature must always be oriented toward the center of the cylinder head.
    • The I indicates the intake camshaft.
    • The E indicates the exhaust camshaft.
    • The number indicates the journal position from the front of the engine.

    Object Number: 946234  Size: SH
  6. Remove the camshaft bearing cap bolts.
  7. Remove the camshaft bearing caps.

  8. Object Number: 946242  Size: SH
  9. Remove the camshafts.
  10. Replace the camshaft bearing caps and bolts.