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This bulletin is being revised to provide new I-shaft part numbers for servicing Allure and LaCrosse vehicles built PRIOR to January 1, 2006. A Corrective Action Summary has been added to this bulletin for quick reference. Please discard Corporate Bulletin Number 01-02-32-001N (Section 02 -- Steering).

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Corrective Action Summary:



Model Year

Vehicle Line

Corrective Action


2001-2004

Buick Regal

Replace using P/N 19179922


2005-2006

Buick Allure/LaCrosse
(built PRIOR to January 1, 2006)

Replace using P/N 25829292


2006-2007

Buick Allure/LaCrosse
(built AFTER to January 1, 2006)

Replace using P/N 25828562


2000-2005

Chevrolet Impala

Replace using P/N 19179923


2006-2008

Chevrolet Impala

Replace using P/N 25913681


2000-2005

Chevrolet Monte Carlo

Replace using P/N 19179922


2006-2007

Chevrolet Monte Carlo

Replace using P/N 25913680


1998-2002

Oldsmobile Intrigue

Replace using P/N 19179922


2004-2008

Pontiac Grand Prix

Replace using P/N 25913680
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:

Locate a large area (parking lot) where the vehicle can be turned in a tight circle.
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.
Drive the vehicle approximately 5 km/h (3 mph) in a circle, preferably over rough pavement or seams on the road surface.
If a clunk is felt in the steering wheel, the MOST likely cause is the I-shaft --

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2007 Monte Carlo SS
Magnaflow Exhaust
K&N Cold Air Intake
ZZ Performance Shift Kit
HP Tuners

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