GM Service Manual Online
For 1990-2009 cars only
   • 
Object Number: 186989  Size: SH
  • Inspect the crankshaft balancer sealing area for grooves (1).
  •    • 
  • Inspect the crankshaft balancer belt ribs for dents or damage.
  •    • 
  • Replace the crankshaft balancer if necessary.