GM Service Manual Online
For 1990-2009 cars only

    Object Number: 412201  Size: SH
  1. Remove the balance shaft drive chain tensioner bolts.
  2. Remove the balance shaft drive chain tensioner.

  3. Object Number: 412413  Size: SH
  4. Remove the adjustable balance shaft chain guide bolt.
  5. Remove the adjustable balance shaft chain guide.

  6. Object Number: 412414  Size: SH
  7. Remove the small balance shaft drive chain guide bolts.
  8. Remove the small balance shaft drive chain guide.

  9. Object Number: 412415  Size: SH
  10. Remove the upper balance shaft drive chain guide bolts.
  11. Remove the upper balance shaft drive chain guide.

  12. Object Number: 412417  Size: SH

    Important: It may ease removal of the balance shaft drive chain to get all of the slack in the chain between the crankshaft and water pump sprockets.

  13. Remove the balance shaft drive chain.
  14. Remove the balance shaft drive sprocket.

Removal Procedure


    Object Number: 895293  Size: SH
  1. Remove the balance shaft drive chain tensioner.

  2. Object Number: 895512  Size: SH
  3. Remove the adjustable balance shaft chain guide.

  4. Object Number: 895517  Size: SH
  5. Remove the small balance shaft drive chain guide.

  6. Object Number: 895520  Size: SH
  7. Remove the upper balance shaft drive chain guide.

  8. Object Number: 895525  Size: SH

    Important: It may ease the removal of the balance shaft drive chain to get all of the slack in the chain between the crankshaft and water pump sprockets.

  9. Remove the balance shaft drive chain.
  10. Remove the crankshaft drive sprocket.