GM Service Manual Online
For 1990-2009 cars only

    Object Number: 2017084  Size: SH
  1. Inspect No. 1 valve rocker arm subassembly.
  2. Note: If the roller does not turn smoothly, replace the valve rocker arm sub-assembly.

  3. Turn the roller by hand to check that it turns smoothly.
  4. Note: Keep the lash adjuster free of dirt and foreign matter. Only use clean engine oil.

  5. Inspect valve lash adjuster assembly.