GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Pontiac 🢒 2009 🢒 G8 🢒 Preface 🢒 Dangers, Warnings, and Cautions 🢒 Secondary Camshaft Drive Chain Tensioner Installation - Right Side

Special Tools

    • EN 46112 Tensioner Retraction Pins
    • J 45027 Tensioner Tool
        For equivalent regional tools, refer to Special Tools.

    Object Number: 1961700 Size: SH
  1. Using the J 45027 tool reset the right secondary camshaft drive chain tensioner plunger.

    2. Object Number: 1961726 Size: SH
  2. Install the plunger (1) into the right secondary camshaft drive chain tensioner body (2).

    3. Object Number: 1961727 Size: SH
  3. Compress the plunger into the body and lock the right secondary camshaft drive chain tensioner (2) by inserting the EN 46112 pins  (1) into the access hole in the side of the right secondary camshaft drive chain tensioner (2).
  4. Slowly release pressure on the right secondary camshaft drive chain tensioner (2). The right secondary camshaft drive chain tensioner (2) should remain compressed.

    5. Object Number: 1961728 Size: SH
  5. Install a NEW right secondary camshaft drive chain tensioner gasket (1) to the right secondary camshaft drive chain tensioner (2).
  6. Install the right secondary camshaft drive chain tensioner bolts through the right secondary camshaft drive chain tensioner (2) and gasket (1).
  7. Ensure the right secondary camshaft drive chain tensioner (2) mounting surface on the right cylinder head does not have any burrs or defects that may degrade the sealing of the NEW right secondary camshaft drive chain tensioner gasket (1).

    8. Object Number: 1958807 Size: SH
  8. Place the right secondary camshaft drive chain tensioner (2) into position and loosely install right secondary camshaft drive chain tensioner to cylinder block retaining bolts (1).

    9. Caution: Refer to Fastener Caution in the Preface section.


    Object Number: 1961729 Size: SH
  9. Verify the proper placement of the right secondary camshaft drive chain tensioner gasket tab (1).
  10. Tighten the right secondary camshaft drive chain tensioner to cylinder block retaining bolts (2).
    11. 10.1. First Pass

    Tighten the bolts to 5 N·m (44 lb in).

    10.2. Final Pass

    Tighten the bolts to 23 N·m (17 lb ft).


    Object Number: 1961730 Size: SH
  11. Release the right camshaft drive chain tensioner by pulling out the EN 46112 pins and unlocking the tensioner plunger.

    12. Caution: Ensure that all timing chain tensioners are completely released. A timing chain tensioner that is not properly released can lead to serious engine damage.

  12. Verify all primary and secondary camshaft drive chain timing mark alignments. Refer to Camshaft Timing Drive Chain Alignment Diagram.