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Clunk or Knock Noise Heard and/or Felt Through Steering Wheel or Brake and Accelerator Pedals (Replace Lower Steering (Intermediate) Shaft)

Subject:Clunk or Knock Noise Heard and/or Felt Through Steering Wheel or Brake and Accelerator Pedals (Replace Lower Steering [Intermediate] Shaft)

Models:2007 Chevrolet Colorado
2007 GMC Canyon
2007 HUMMER H3 with 3.7L Inline 5 Cylinder Engine (VIN E -- RPO LLR)



This bulletin is being revised to provide important steps to follow when replacing the lower I-shaft. Refer to "Important" information found in the Correction Section of this bulletin. Please discard Corporate Bulletin Number 07-02-35-006A (Section 02 -- Steering).


Condition

Some customers may comment on a clunk or knock noise being heard or felt through the steering wheel and/or brake and accelerator pedals. This issue may be more prevalent in hotter temperatures.

Cause

This condition may be caused by a slip/stick condition in the lower steering (intermediate) shaft.

Correction

Important:  When replacing the lower intermediate shaft, follow service procedures found in published Service Information (SI). Be sure to ALWAYS:

   • Keep the hub straight when removing/attaching the lower I-shaft to the upper steering column.
   • Pin the steering column using the J 42640 - Steering Column Locking Pin in its straight position prior to removing the lower I-shaft. Keep it pinned until after the new lower I-shaft is installed.
Failure to perform these steps could result in a mis-alignment of the upper steering column to the lower I-shaft and cause DTC C0710 and "Serv Stab System" message to occur.

Replace the lower steering (intermediate) shaft. The new i-shaft can be identified by a yellow mark as identified in the following graphic.


Object Number: 1999704  Size: SH

Parts Information

Due to limited quantities, parts should not be ordered for stocking purposes.

Part Number

Description

25900714

Shaft - Lower Steering

Warranty Information

For vehicles repaired under warranty, use:

Labor Operation

Description

Labor Time

E7700

Shaft, Steering Intermediate - Replace (Lower)

Use Published Labor Operation Time