Steering shaft clunk update - what to do.
12-02-2006, 06:07 PM
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Steering shaft clunk update - what to do.
Got around to finally calling GM and talking to the Lead GMT800 engineer from ParTech. The official word on it from GM is there is no new shaft. The old shafts have all changed to this new number for inventory control purposes. In fact, to strengthen my case, GM JUST released a new bulletin on the I-shaft problem for the pickups. They state in there to just remove the shaft, fully extend then compress it at least 6 times, and that will get you the same results as lubing it. I'll post that up in a few minutes. So, as for this new so-called improved shaft......dont think so. Just keep lubing and stroking guys.....sorry.
Last edited by bigredexpress99; 12-03-2006 at 10:21 AM.
12-02-2006, 06:08 PM
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Subject: Clunking Noise Under Hood and Can Be Felt in Steering Wheel and/or Steering Column (Exercise/Stroke Intermediate Steering Shaft Assembly) #00-02-35-003L - (11/29/2006)
Models: 2002-2006 Cadillac Escalade Models
1999-2007 Chevrolet Silverado Models (Classic)
2000-2006 Chevrolet Suburban, Tahoe Models
2002-2006 Chevrolet Avalanche
1999-2007 GMC Sierra Models (Classic)
2000-2006 GMC Yukon, Yukon XL Models
2003-2006 HUMMER H2
Attention: This Service Bulletin DOES NOT include Mid-Size Utilities such as Buick Rainier, Chevrolet TrailBlazer Models, GMC Envoy Models or Oldsmobile Bravada. Refer to Service Bulletin 02-02-35-006A or newer for Mid-Size Utilities.
--------------------------------------------------------------------------------
This bulletin is being revised to change the service procedure. Please discard Corporate Bulletin Number 00-02-35-003K (Section 02 -- Steering).
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Condition
Some customers may comment on a clunk-type noise coming from under the hood that also can be felt in the steering wheel. These conditions may be more noticeable when turning at low speeds on rough road surfaces.
Diagnostic Tips
Use the information below to help diagnose the source of the noise.
• Frame Snap and/or Popping Type Noise -- A frame snap or popping type noise can be duplicated on rough or smooth road surfaces with steering wheel input to the left or the right. This type of noise can be HEARD and is typically louder with the windows rolled down. For additional information, refer to Corporate Bulletin Number 03-08-61-002F or newer -- Snap/Popping Type Noise Coming from Front of Vehicle (Remove Front Crossmember, Change Fastener Orientation)
• Intermediate Shaft Clunk -- Intermediate shaft clunk is heard and FELT in the steering wheel and/or steering column area, typically while driving on rough road surfaces with steering wheel input.
Correction
DO THIS
Fully Exercise/Stroke I-Shaft 5-6 times
DO NOT DO THIS
DO NOT REPLACE the following intermediate shaft P/N's:
P/N 88965505
P/N 89060582
P/N 19149105
DO NOT LUBRICATE the Intermediate Shaft (P/N 26098419)
Engineering has determined that fully exercising/stroking the I-Shaft will provide similar results as lubricating.
Disconnect the I-Shaft underhood.
Fully exercise/stroke the I-shaft a minimum of 5-6 times.
Reconnect the I-shaft.
Models: 2002-2006 Cadillac Escalade Models
1999-2007 Chevrolet Silverado Models (Classic)
2000-2006 Chevrolet Suburban, Tahoe Models
2002-2006 Chevrolet Avalanche
1999-2007 GMC Sierra Models (Classic)
2000-2006 GMC Yukon, Yukon XL Models
2003-2006 HUMMER H2
Attention: This Service Bulletin DOES NOT include Mid-Size Utilities such as Buick Rainier, Chevrolet TrailBlazer Models, GMC Envoy Models or Oldsmobile Bravada. Refer to Service Bulletin 02-02-35-006A or newer for Mid-Size Utilities.
--------------------------------------------------------------------------------
This bulletin is being revised to change the service procedure. Please discard Corporate Bulletin Number 00-02-35-003K (Section 02 -- Steering).
--------------------------------------------------------------------------------
Condition
Some customers may comment on a clunk-type noise coming from under the hood that also can be felt in the steering wheel. These conditions may be more noticeable when turning at low speeds on rough road surfaces.
Diagnostic Tips
Use the information below to help diagnose the source of the noise.
• Frame Snap and/or Popping Type Noise -- A frame snap or popping type noise can be duplicated on rough or smooth road surfaces with steering wheel input to the left or the right. This type of noise can be HEARD and is typically louder with the windows rolled down. For additional information, refer to Corporate Bulletin Number 03-08-61-002F or newer -- Snap/Popping Type Noise Coming from Front of Vehicle (Remove Front Crossmember, Change Fastener Orientation)
• Intermediate Shaft Clunk -- Intermediate shaft clunk is heard and FELT in the steering wheel and/or steering column area, typically while driving on rough road surfaces with steering wheel input.
Correction
DO THIS
Fully Exercise/Stroke I-Shaft 5-6 times
DO NOT DO THIS
DO NOT REPLACE the following intermediate shaft P/N's:
P/N 88965505
P/N 89060582
P/N 19149105
DO NOT LUBRICATE the Intermediate Shaft (P/N 26098419)
Engineering has determined that fully exercising/stroking the I-Shaft will provide similar results as lubricating.
Disconnect the I-Shaft underhood.
Fully exercise/stroke the I-shaft a minimum of 5-6 times.
Reconnect the I-shaft.
12-02-2006, 06:29 PM
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Awesome isn't it? I read that once I arrived at work on Friday, I am superised that they have basically given up on it. I wonder if the future will bring anything new, probably not, due to the body style change.
12-03-2006, 10:20 AM
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Originally Posted by 4.8T
thats kinda funny because they kept lubing mine in my silverado. and it kept coming back but when i went to arkansas they replaced it and i never had the problem again.
12-03-2006, 10:23 AM
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they do seem to last longer when you replace the whole shaft, but it will eventually come back. Who knows what GM is gonna do with the GMT800's now that they are done. Hopefully they come up with a fix, but in some of the pics I've seen on the net, and in looking at the trucks @ the dealership, they have in i-shaft design thats the same. So lets hope this doesnt happen again........
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12-03-2006, 02:53 PM
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The fix is actually quite simple. You just totally redesign the shaft or even really easy, GM designs the I-shaft with a grease cert on the shaft to allow it to be lubricated. What's so hard about that?
Jim
Jim