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Originally Posted by tcmiller3
Thanks for the quick response. From my description does this sound like it could very well be the ISS? How do you get your hands on the GM lube kit and instructions for use? Regarding the brakes, I'm guessing that is probably time for a brake job but this steering noise is driving me nuts. Do you know if this is an actual safety concern or just an annoyance?
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Hard to say without further diagnosis/troubleshooting since steering and suspension components like the rack & pinion, tie rods ends and strut mounts can give a clunking sound.
Here is some info on the ISS issue from one of my old posts in this forum.
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Originally Posted by BNaylor
Here is a synopsis of the GM TSB. It affected primarily 2001 - 2002 Chevy Monte Carlos and other GM vehicles but the Impala and other "W" bodies such as the Regal are possibly subject to a similar problem.
A clunk type noise from the front of the vehicle during a turning manuver - sometimes also felt through the steering wheel when the wheel is rotated from steering stop to steering stop when the vehicle isn't moving - may be caused by inadequate lubrication of the steering intermediate shaft. This results in a "slip stick" condition possibly resulting in the clunk noise (TSB 01-02-32-001B, July 2002)
A GM dealer should have a kit, GM #26098237. This kit contains instructions, a syringe of lube, and a rubber cork/stopper to plug yoke end of shaft when forcing lube into splines. Cost approximately $12. A GM Kent-Moore tool to keep the steering column locked, as stated in the TSB is normally required. Doing this repair could damage wiring on SIR coil, if wheel is turned excessively with ISS removed. GM's original TSB listed the lube kit as a fix, but the latest TSB calls for ISS (intermediate steering shaft) replacement.
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