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Posted by Marty (70.187.144.149) on 00:07:41 04/25/07
Has this TSB been revised to include any newer models on the affected model list?
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Bulletin No.: 00-02-35-003H
Date: April 19, 2005
TECHNICAL
Subject:
Clunking Noise Under Hood and Can be Felt in Steering Wheel (Replace Upper Intermediate Steering Shaft Assembly)
Models:
2002-2003 Cadillac Escalade, Escalade EXT
2003 Cadillac Escalade ESV
1999-2003 Chevrolet Silverado
2000-2003 Chevrolet Suburban, Tahoe
2002-2003 Chevrolet Avalanche
1999-2003 GMC Sierra
2000-2003 GMC Yukon, Yukon XL
2003 HUMMER H2
(Affected vehicles include both 2WD and 4WD)
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.
Supercede:
This bulletin is being revised to inform dealers that GMSPO has sufficient inventory on improved I-shafts. Please discard Corporate Bulletin Number 00-02-35-003G (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.
Correction
Replace the steering column upper intermediate shaft with an improved design shaft that will eliminate the clunk noise using the procedure listed below.
1. Set the front wheels in the straight-ahead position.
Note: On 2002 and later model year vehicles, the steering column LOCK was removed from the steering column. It is critical that the J 42640 Steering Column Anti-Rotation Pin is used when servicing these steering columns. Failure to use the J 42640 may result in damage to the SIR coil.
2. Set the steering wheel in the LOCK position on 2001 and prior vehicles.
3. Install the J 42640 in the steering column lower access hole.
4. From under the hood, remove the lower bolt that connects the upper intermediate shaft to the steering gear coupling shaft.
5. Slide the shaft towards the dash in order to disengage the shaft from the steering gear coupling shaft.
6. For vehicles equipped with adjustable foot pedals, do the following steps.
^ Reposition the carpet away from the accelerator pedal position (APP) sensor.
^ Remove the two nuts retaining the accelerator pedal to the bulkhead.
^ Reposition the accelerator pedal out of the way so that the intermediate shaft can be removed.
7. From inside the vehicle, remove the upper bolt from the upper intermediate steering shaft (1) to the steering column connection.
8. Remove the upper intermediate steering shaft assembly.
^ From inside the vehicle, slide the shaft down and off the steering column shaft.
^ From inside the vehicle, slide the upper intermediate shaft through the dash boot seal and remove the shaft from the vehicle.
9. Replace the upper intermediate shaft. See the parts table below.
10. Install the upper intermediate steering shaft through the dash boot seal and slide the lower end into the steering gear coupling shaft.
11. Raise the upper end of the intermediate steering shaft and install into the steering column shaft.
12. Install the upper bolt and nut.
TightenTighten the bolt to 47 N.m (35 lb ft).
13. Install the lower bolt and nut.
TightenTighten the bolt to 50 N.m (37 lb ft).
14. For vehicles equipped with adjustable foot pedals, do the following steps.
^ Reposition the accelerator pedals into position on the bulkhead.
^ Install the two retaining nuts.
TightenTighten the nuts to 20 N.m (15 lb ft).
^ Reposition the carpet back into place.
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