Accessory Drive Belt - Whining Type Noise

File In Section: 02 - Steering

Bulletin No.: 01-02-32-007

Date: September, 2001

TECHNICAL

Subject:

Accessory Drive Belt Whine
(Reposition Power Steering Pump Pulley)

Models:

2001-02 Chevrolet and GMC C/K 1500 Series Utility Models
(Tahoe, Suburban, Yukon, Yukon XL, Denali, Denali XL)
Built at Janesville Assembly Plant (Plant Code J)
from December, 2000 through July, 2001

Condition

Some customers 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 (PS) pump pulley may be positioned too far inboard on the PS pump.

Correction

Inspect the PS pump pulley for proper positioning on the PS pump shaft. If it is determined that the pulley is not even/flush with the end of the shaft (+/- 0.25 mm (0.010 in) following the applicable Service Manual procedure and using J 25034-C, reposition the PS pump pulley.

Warranty Information





For vehicles repaired under warranty, use the table.





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