GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2008 🢒 Cobalt 🢒 Engine 🢒 Engine Mechanical - 2.0L 🢒 Timing Chain and Tensioner Removal

    Object Number: 1403955 Size: SH
  1. Remove the upper timing chain guide bolts.
  2. Remove the upper timing chain guide.

    3. Object Number: 1769723 Size: SH

    Important: The timing chain tensioner must be removed to unload chain tension before the timing chain is removed. If it is not, the timing chain will become cocked and it will be difficult to remove.

  3. Remove the timing chain tensioner.

    4. Object Number: 1403953 Size: SH
  4. Locate hex on the exhaust camshaft and hold with a wrench.
  5. Remove the exhaust cam bolt and the exhaust cam actuator.

    6. Discard the bolt.


    Object Number: 1403949 Size: SH
  6. Remove the adjustable timing chain guide bolt.
  7. Remove the adjustable timing chain guide.

    8. Object Number: 1769728 Size: SH
  8. Remove the plug to gain access to the fixed timing chain guide bolt.

    9. Object Number: 412165 Size: SH
  9. Remove the fixed timing chain guide bolts.
  10. Remove the fixed timing chain guide.

    11. Object Number: 1403951 Size: SH
  11. Locate hex on the intake camshaft and hold with a wrench.
  12. Remove the intake cam sprocket bolt, the intake cam sprocket and the timing chain through the top of the cylinder head. Discard the bolt.

    13. Object Number: 2074531 Size: SH
  13. Remove the friction washers.
  14. Remove the crankshaft sprocket.

    15. Object Number: 412200 Size: SH
  15. Remove the timing chain oil nozzle bolt.
  16. Remove the timing chain oil nozzle.