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7: Misalignment of the pulleys may be caused from improper mounting of the accessory 8: This test is to verify that the pulleys are the correct diameter or width. Using a known Drive Belt Squeal Diagnosis Step Action Yes No DEFINITION: The following items are indications of drive belt squeal: A loud screeching noise that is caused by a slipping drive belt (this is unusual for a The noise occurs when a heavy load is applied to the drive belt, such as an air NOTE: Refer to Belt Dressing Notice in Cautions and Notices. 1 Did you review the Drive Belt Symptom Go to Step 2 Go to 2 Verify that there is a squeal noise. Go to Step 3 Go to Diagnostic Aids 3 1. Remove the drive belt(s). Refer to Drive Belt Replacement (Without A/C) or 2. Operate the engine for no longer than 30 to 40 seconds. Does the noise still exist? Go to Engine Go to Step 4 4 Inspect for an accessory drive component seized Go to Step 9 Go to Step 5 5 Test the drive belt tensioner for proper operation.
2006 Hummer H3 2006 ENGINE Engine Mechanical - 3.5L (L52) - H3
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