GM Service Manual Online
For 1990-2009 cars only
   • 
Object Number: 1977767  Size: SH
  • Inspect the camshaft journals and lobes for wear or scoring.
  •    • 
  • Inspect the camshaft sprocket alignment notch for damage.
  •    • 
  • Inspect the camshaft cover for damage or loose oil control baffles.
  •    • 
  • Clean the camshaft cover.
  •    • 
  • Wash the camshaft in solvent.
  •    • 
  • Oil the camshaft.
  •    • 
  • Inspect the camshaft cover for cracks or other signs of damage.