GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

  1. Remove the balance shaft drive chain. Refer to Balance Chain Replacement .

  2. Object Number: 954009  Size: SH

    Important: 

       • Do not disassemble the balance shaft assembly. Remove and install the balance shaft as a complete assembly.
       • Rotate the balance shaft to check for free rotation. If the balance shaft does not turn free, inspect the balance shaft bearings and bearing surface for damage.

  3. Remove and discard the right balance shaft retaining bolts.
  4. Remove the right balance shaft assembly.

Installation Procedure


    Object Number: 954009  Size: SH
  1. Lubricate the balance shaft bearing journals with clean engine oil.
  2. Install the right balance shaft assembly with the counterweight down to prevent damage to the balance shaft bearings.
  3. Notice: Refer to Fastener Notice in the Preface section.

  4. Install the new balance shaft retaining bolts.
  5. Tighten
    Tighten the bolts to 12 N·m (106 lb in).

  6. Install the balance shaft drive chain. Refer to Balance Chain Replacement .