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kcram - Pickups Host
The Utah Highway Patrol Vehicle Safety put out a newsletter on Nov. 1, 2007. It states,
"Recently, one of our Safety Inspection Investigators investigated a case involving a 2006 GMC Sierra Dura Max Diesel. During this investigation, it was found that the steering wheel would bind when the brake pedal was applied, particularly while parking. General Motors issued a service bulletin (#1848789) acknowledging a pre-existing poser assist condition, which can be aggravated by having worn tires, low tire air pressure, lower power steering pump pressure, and larger tires than stock size. Please make sure that all inspectors are aware that this same condition can be seen on any other vehicle make or model with this type of power assist system. If your station does come across a vehicle with this same condition, please make sure that the vehicle is rejected as it is noted in the 2007 Safety Inspection Manual."
If your vehicle is rejected or has this problem and you live in the state of Utah please leave a comment on this and we'll figure out how to get in touch with each other. The car manufacturers should have to fix this problem, but right now their saying it's one in many that has this condition. We need to show them they're wrong before something goes tragically wrong. Thanks for your support. Please let me know even if you don't live in Utah.
Here is the service bulletin:
Document ID# 1893252
Subject: Clunking Noise Under Hood and Can Be Felt in Steering Wheel and/or Steering Column (Replace Upper Intermediate Steering Shaft (I-Shaft) Assembly) #00-02-35-003M - (01/31/2007)
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 update the repair procedure with a permanent fix.
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
DON'T DO THIS
Replace the I-Shaft with P/N 19153614.
Do NOT lubricate or exercise the I-Shaft.
Important:
• I-shaft P/N 19153614 has been designed to replace previous designed dampened and non-dampened I-shafts. The physical difference in the yoke size will accommodate all vehicles listed in this bulletin.
• Due to the design of the new I-shaft, it is not possible to lubricate/grease the I-shaft.
Replace the steering column upper intermediate shaft with an improved design shaft that will eliminate the clunk noise using the procedure listed below.
Set the front wheels in the straight ahead position.
Notice: On the 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 steering columns on 2002 and later model year vehicles. Failure to use the J 42640 may result in damage to the SIR coil.
Set the steering wheel in the LOCK position on 2001 and prior model year vehicles.
For 2002 and later vehicles, install the J 42640 in the steering column lower access hole.
From under the hood, remove the lower bolt that connects the upper intermediate shaft to the steering gear coupling shaft.
Slide the shaft towards the dash in order to disengage the shaft from the steering gear coupling shaft.
For vehicles equipped with adjustable foot pedals, perform the following steps:
6.1. Reposition the carpet away from the accelerator pedal position (APP) sensor.
6.2. Remove the two nuts retaining the accelerator pedal to the bulkhead.
6.3. Reposition the accelerator pedal out of the way so the intermediate shaft can be removed.
From inside the vehicle, remove the upper bolt from the upper intermediate steering shaft (1) to the steering column connection.
Remove the upper intermediate steering shaft assembly.
8.1. From inside the vehicle, slide the shaft down and off the steering column.
8.2. From inside the vehicle, slide the upper intermediate shaft through the dash boot seal and remove the shaft from the vehicle.
Replace the upper intermediate shaft.
Install the upper intermediate steering shaft through the dash boot seal and slide the lower end into the steering gear coupling shaft.
Raise the upper end of the intermediate steering shaft and install into the steering column shaft.
Install the upper bolt and nut.
Tighten
Tighten the bolt to 47 N·m (35 lb ft).
Install the lower bolt and nut.
Tighten
Tighten the bolt to 50 N·m (37 lb ft).
For vehicles equipped with adjustable foot pedals, perform the following steps:
14.1. Reposition the accelerator pedals into position on the bulkhead.
14.2. Install the two retaining nuts.
Tighten
Tighten the nuts to 20 N·m (15 lb ft).
14.3. Reposition the carpet into place.
Parts Information
Part Number
Description
19153614
Shaft - Upper Intermediate Steering
Warranty Information
For vehicles repaired under warranty, use:
Labor Operation
Description
Labor Time
E7700
Shaft, Steering Intermediate - Upper -- Replace
Use Published Labor Operation Time
GM bulletins are intended for use by professional technicians, NOT a "do-it-yourselfer". They are written to inform these technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions, and know-how to do a job properly and safely. If a condition is described, DO NOT assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See your GM dealer for information on whether your vehicle may benefit from the information.
WE SUPPORT VOLUNTARY TECHNICIAN CERTIFICATION
© Copyright General Motors Corporation. All Rights Reserved
Ihad this shaft replaced in Nov. and it did absolutely nothing for the 'Chubaka Noise" coming from the left side of my '04 Silverado, but tghe mechanis did tell me that replacing the steering column would get it done and that greasing the shaft was not possible due to it being "closed".
On the side I travelled to Colorado and on the return trip I noticed the speedometer was at 120mph! I pulled off to the side of the road and turned off the engine and to my astonishment was still doing 75-80mph!
So, I had to "guestimate" the speed by way of other cars on the highway.
To my surprise, when I arrived home there was a letter from GM telling me that they'd had complaints about the "jittery" instrument panel and I got it replaced for free at the dealer. All I had to do was give them my VIN, they ordered the part and replaced it in less than 45 minutes.
I can't understand why the delay on the steering column.... :shades:
Tnx
Ty
Steve
I have a 2004 Z71 which I bought new and now it has only 28K miles. I noticed the clunking in the steering wheel at about 15k miles and was told it was not a major problem and that grease would help, but the clunking did not bother me enough to take it apart. Now, I have another problem with steering which is a safety hazard. At a stop and low speeds, with or without the breaks applied, I have no power steering assistance to the left. I jacked up the left side enough to get some pressure off the wheel and noticed I can steer in both directions just fine. I checked and greased both sides and did not find anything noticeably worn on the front end. I read a service bulletin that recommends changing the gear box from a 670 to a 680.
At the end of the day, I'm still scratching my head and looking for answers...All the help is greatly appreciated!
Look into buying an aftermarket shaft, they do make one. Good Luck, bp.
for the updated replacement intermediate steering shaft.