Clunk Felt/Noise Heard From Steering Column, Steering Gear and/or Front Of Vehicle During Turning Maneuver and/or Steering Wheel Rotation (Replace Intermediate Shaft As Directed)

Subject: Clunk Felt/Noise Heard From Steering Column, Steering Gear and/or Front Of Vehicle During Turning Maneuver and/or Steering Wheel Rotation (Replace Intermediate Shaft As Directed)

Models: 2001-2004 Buick Regal, 2005-2007 Buick Allure (Canada Only), LaCrosse, 2000-2008 Chevrolet Impala, 2000-2007 Chevrolet Monte Carlo, 1998-2002 Oldsmobile Intrigue, 2004-2007 Pontiac Grand Prix

Condition

Some customers may comment on a clunk type noise coming from the front of the vehicle while driving during a turning maneuver. This condition may also be felt through the steering wheel when the vehicle is stationary and the wheel is rotated from steering stop to steering stop. Some vehicles may only exhibit the noise once for every 360° of wheel rotation. On all other vehicles, this clunk noise will be noticed during low speed acceleration or deceleration, typically in light turns of the steering wheel or when applying/releasing the brakes.

Cause

This condition may be caused by a "slip stick" condition resulting in the clunk noise or feel through the steering wheel.

Diagnostic Tip

Important: This condition is commonly misdiagnosed as originating in the steering gear and has resulted in the replacement of numerous steering gears without correcting the concern. Attempt to duplicate the customer's concern and isolate the I-shaft by following the procedure below:

1. Locate a large area (parking lot) where the vehicle can be turned in a tight circle.

2. Turn the steering wheel to the right and/or left all the way to the steering lock, then off the steering lock a 1/4 turn. Download File PDF