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Drive Belt Rumbling Diagnosis

WARNING: This page is about a different car, the 2006 Pontiac Montana SV6, 2006 Chevrolet Uplander, and 2006 Buick Terraza. However, it is still accessible from the selected car via links, so may be relevant.
Drive Belt Rumbling Diagnosis

Step Action Yes No
DEFINITION:
  • A low pitch tapping noise caused by drive belt misalignment
  • This noise occurs on cold start-up at idle.
  • A low frequency noise heard once per revolution of the drive belt
1 Check for severe pilling.
Is there severe pilling of more than 1/3 of the rib depth?		 Go to Step 2  System OK
2 Clean the drive belt pulleys.
Is the repair complete?		 System OK Go to Step 3 
3 Install a new drive belt. Refer to Drive Belt Replacement .
Is the repair complete?		 System OK -
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