Accessory Drive Belt Whine (Reposition Power Steering Pump Pulley)
| Subject: | Accessory Drive Belt Whine (Reposition Power Steering Pump Pulley) |
| Models: | 2001-2003 Chevrolet Silverado, Suburban |
| 2002-2003 Chevrolet Avalanche |
| 2001-2003 GMC Sierra, Yukon XL |
| with 8.1L Engine (VIN G -- RPO L18) |
Condition
Some customer may comment on a whining-type noise that is audible in the vehicle's passenger compartment. This noise can typically be heard when the vehicle is idling and may vary in pitch as engine RPM is increased.
Cause
The power steering pump pulley may be positioned too far inboard on the power steering pump.
Correction
Follow all of the current diagnostics in the Service Manual.
If the concern is not resolved, then reposition the power steering pump pulley on the power steering pump shaft. Following the applicable Service Manual procedure and using J 25034-C, reposition the pulley outward from the end of the shaft by 1.0 mm (0.040 in.). This will leave the shaft recessed in the pulley.
Warranty Information
For vehicles repaired under warranty, use:
Labor Operation | Description | Labor Time |
|---|---|---|
E8360 | Pulley, Power Steering Pump -- Adjustment | 0.4 hr |
