Engine - Squeal Or Whine Noise Coming Engine Compartment
TECHNICALBulletin No.: 09-06-01-011
Date: August 05, 2009
Subject: Squeal or Whine Type Noise Coming from Engine Compartment (Replace Drive Belt Idler Pulley)
Models:
2006-2007 Buick Rainier
2006-2009 Chevrolet TrailBlazer
2006-2009 GMC Envoy
2006-2009 Saab 9-7X
Equipped with Engine RPO LL8
Please Refer to GMVIS
Condition
Some customers may comment on a squeal or whine type noise coming from the engine compartment.
Correction
Replace the drive belt idler pulley. The drive belt idler pulley is now available for service as a separate part. The pulley was formerly available only as part of the pulley and bracket assembly. DO NOT replace the pulley and bracket assembly if the pulley only requires replacement. Please refer to the replacement procedure listed below.
1. Remove the drive belt.
2. To confirm the suspect noise, operate the engine for no longer than 30-40 seconds. If the noise is no longer present, continue with the repair. If the noise is still present, refer to the diagnosis information found in SI.
3. Remove the drive belt idler pulley bolt.
4. Remove the drive belt idler pulley from the vehicle.
5. Install the drive belt idler pulley to the vehicle.
6. Install the drive belt idler pulley bolt.
Tighten
Tighten the idler pulley bolt to 40 Nm (30 lb ft).
7. Install the drive belt.
Parts Information
Warranty Information (excluding Saab U.S. Models)
For vehicles repaired under warranty, use:
Warranty Information (Saab U.S. Models)
For vehicles repaired under warranty, use the table above.
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