Clunk or Knock Noise Heard and/or Felt Through Steering Wheel or Brake and Accelerator Pedals (Replace Lower Steering [Intermediate] Shaft). GMC Truck Canyon Pickup

Subject:

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

Models:

2007-2008 Chevrolet Colorado

2007-2008 GMC Canyon

2007-2008 HUMMER H3

Excludes H3 V8s Sold in North America

Includes H3G Vehicles Built PRIOR to Serial Number 422858 (LHD) / 425990 (RHD)

This bulletin is being revised to clarify the part information for H3 and H3G vehicles. Please discard Corporate Bulletin Number 07-02-35-006C (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 or green mark as identified in the following graphic.

Parts Information

Important: H3G vehicles are SUV's built in South Africa and sold outside of North America.

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

Part Number	Description
25900714	Shaft - Lower Steering (Colorado / Canyon and H3/H3G LHD w/L5 Engine)
24300315	Shaft -- Lower Steering (H3G RHD w/L5 Engine)
25900715	Shaft - Lower Steering (H3/H3G LHD [sold outside North America] w/V8 Engine) (does not apply to H3 V8's sold in North America)

Part Number

Description

25900714

Shaft - Lower Steering

(Colorado / Canyon and H3/H3G LHD w/L5 Engine)

24300315

Shaft -- Lower Steering

(H3G RHD w/L5 Engine)

25900715

Shaft - Lower Steering

(H3/H3G LHD [sold outside North America] w/V8 Engine)

(does not apply to H3 V8's sold in North America)

Warranty Information

For vehicles repaired under warranty, use:

Labor Operation	Description	Labor Time
E7700	Shaft, Steering Intermediate - Replace (Lower)	Use Published Labor Operation Time