GM Service Manual Online
For 1990-2009 cars only

    Object Number: 412191  Size: SH

    Important: Remove each bolt on each cap one turn at a time until there is no spring tension pushing on the camshaft.

  1. Mark the caps to ensure they are installed in the same position.
  2. Remove the exhaust camshaft cap bolts.
  3. Remove the camshaft caps ensuring they are marked and refitted in same position on assembly.
  4. Remove the exhaust camshaft.

  5. Object Number: 412194  Size: SH

    Important: Keep all of the roller finger followers and hydraulic lash adjusters in order so that they can be reinstalled in their respective locations.

  6. Remove the exhaust camshaft roller finger followers.

  7. Object Number: 412197  Size: SH
  8. Remove the hydraulic lash adjusters.

Removal Procedure


    Object Number: 895283  Size: SH

    Important: Remove each bolt on each cap one turn at a time until there is no spring tension on the camshaft.

  1. Remove the exhaust camshaft bearing cap bolts.
  2. Remove the camshaft bearing caps ensuring they are marked and refitted in the same position on the assembly.
  3. Remove the exhaust camshaft.

  4. Object Number: 895286  Size: SH

    Important: Keep all of the roller finger followers and valve lash adjusters in order so that they can be reinstalled in their respective locations.

  5. Remove the exhaust camshaft roller finger followers.

  6. Object Number: 895289  Size: SH
  7. Remove the hydraulic element adjusters.