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Author Topic: 2006 Silverado Popping Noise coming from front of vehicle  (Read 6879 times)

Offline yoderrm

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I have a 2006 Silverado 1500 (5. 3L Z71 ext cab, 40K miles).   For the past several months, I have noticed a popping noise coming from under the floor board on the driver side when the vehicle enters a slow turn.   It has been gradually getting worse.   

I have read numerous posts about the intermediate steering shaft issue, but after reading the TSB for this problem, I don't believe this is the issue that I am having.   My brother's 3/4 ton Duramax has the steering shaft issue, and he says it makes multiple "clunks" when he is turning, and he can feel it through the steering wheel.   In my case, there is only one, single, definitive "clunk" while I am turning.   It only does it at moderate speeds (10-20mph), and during both left and right hand turns, but it doesn't do it all the time and is sometimes hard to recreate.   I also do not feel the thump through the steering wheel, but I seem to be able to feel it through the floor board.   

In the I-shaft TSB, it mentions that some people can hear a noise, but not feel it in the steering wheel, and they should refer to TSB 03-08-61-002F (Remove front crossmember, change fastener orientation).   However, I can't find a detailed version of this TSB online, and I can't find anyone else who seems to have this issue.   I would assume that the crossmember that the TSB is talking about is the one near the transfer case, but the noise seems to come more from the front of the vehicle.   Also, the only version of this TSB that I was able to find just mentioned cleaning off the undercoating on the crossmember and reinstalling it.   But since the title says "change fastener orientation", I would assume that there would be more to it that just cleaning off undercoating.   Any advice?  Am I on the right track?

Thanks for your help. . .  I am new to this site, but it looks like it will prove to be very helpful.

Offline stu

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Re: 2006 Silverado Popping Noise coming from front of vehicle
« Reply #1 on: June 26, 2008, 10:51:26 PM »
2 or 4wd?
I am in a state of confusion.

Offline yoderrm

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Re: 2006 Silverado Popping Noise coming from front of vehicle
« Reply #2 on: June 26, 2008, 11:32:52 PM »
4wd

Offline stu

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Re: 2006 Silverado Popping Noise coming from front of vehicle
« Reply #3 on: June 26, 2008, 11:44:50 PM »
There is no indication of the TSB you stated but I found this one.

Bulletin No.: 06-08-61-003B

Date: January 22, 2008

TECHNICAL

Subject:
Underbody Pop or Clunk Type Noise while Turning or Driving on Uneven Road Surfaces (Install Body Mount Insulator)

Models:
2004-2006 Cadillac Escalade, Escalade ESV, Escalade EXT
2004-2006 Chevrolet Avalanche, Suburban, Tahoe
2004-2007 Chevrolet Silverado (Classic)
2004-2006 GMC Yukon, Yukon XL, Yukon Denali, Yukon Denali XL
2004-2007 GMC Sierra, Sierra Denali (Classic)
2003-2008 HUMMER H2

Supercede:

This bulletin is being revised to add the 2008 HUMMER H2. Please discard Corporate Bulletin Number 06-08-61-003A (Section 08 - Body and Accessories).

Condition

Some customers may comment on a pop or clunk type noise while turning or driving on uneven road surfaces. This noise can be heard and/or felt at either the drivers or front passenger floor pan area.

Cause

Under certain conditions normal movement between the frame and body mount may cause this noise to occur.

Correction

Install an insulator at the right and left side # 1 body mounts. The insulator should be installed between the upper portion of the body mount and the frame bracket. The # 1 mount is the mount located just under the A-pillar. Use the procedure listed below.

Raise the vehicle on the hoist. It is recommended to use a four-post lift or strap the vehicle frame to the hoist arms.

For the left side mount only remove the intermediate park brake cable. Perform the following steps:

Remove the nut from the park brake equalizer.

Remove the intermediate cable from the equalizer.

Depress the retaining tabs that secure the park brake cable to the frame.

Pull slightly on the cable from the mounting area in order to provide slack for body movement without binding the cable. Remove all of the body mount bolts on the side being repaired.

Properly support the body at the # 1 body mount area.

 
 
 
 


When you remove the body mount, do NOT separate the frame from the body more then necessary. possible personal injury and damage to multiple parts may result.

Lower the chassis accordingly in order to remove the upper portion of the # 1 body mount.

While the body mount is removed, check the underbody area that interfaces with the top of the body mount for excess build-up of E-Coat Primer or other foreign material. If the surface is not smooth use a 90 degree die grinder, or equivalent to remove the excessive build-up. Apply an anti-corrosion protection, P/N 12378398 (in Canada, 10952414), to the bare surface as necessary to prevent rusting.

 
 
 
 


Install the new insulator to the bottom of the top portion of the # 1 body mount. The picture shows the insulators (1) location after the body mount is reassembled.

Install the # 1 body mount to the frame bracket.

Perform the following procedure before installing the bolts.

Clean the bolt threads of all the original thread locking compound.

Clean the threads of the bolt with denatured alcohol or equivalent and allow to dry.

Apply Threadlocker GM P/N 89021297 (In Canada use P/N 10953488).

Install the body mount bolts.

Tighten

For 2003, 2004 and 2005 model year tighten the bolts to 85 N.m (63 lb ft).

Tighten

For 2006-2008 model year tighten the bolts to 100 N.m (74 lb ft).

Reinstall the intermediate park brake cable.

Repeat steps 3-9 for the other side.

Test drive the vehicle to verify the repair.

I am in a state of confusion.

Offline yoderrm

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Re: 2006 Silverado Popping Noise coming from front of vehicle
« Reply #4 on: June 27, 2008, 07:36:12 AM »
Sounds like the problem I have. . . .  I will give this one a try.   Thank you!

Offline steingang2

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Re: 2006 Silverado Popping Noise coming from front of vehicle
« Reply #5 on: July 14, 2008, 07:22:52 PM »
I had the same problem, it turned out the clearance between the fenderwells and the firewall is too close.   I took it to the dealer and they found a service bulliten on it.   They had to remove the fenderwell and pry back the mount just a little and the noise went away.   Now if they can only do something about the beam shake I have on y crew cab.

Offline bpp2209

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Re: 2006 Silverado Popping Noise coming from front of vehicle
« Reply #6 on: July 22, 2009, 06:26:09 PM »
I have the same issue. Did you ever get it resolved?  If so, how?

 

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