Hummer Forums by Elcova - TSB Q on crossmember. Help Clause!!!

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- - TSB Q on crossmember. Help Clause!!! (http://www.elcovaforums.com/forums/showthread.php?t=708)

I recently saw a TSB somewhere on a member having one of the crossmembers being improperly tightened and was causing clunking under the front end. mine has been to the dealer five times for this problem and they can never find or fix it. They did say that they had to make some kind of dimples under the battery tray and that was causing the issue. BS!

It is still there and does it every time you go off-road. Who had this fix done? Did it work? TSB #?

I didn't have the crossmember problem but I had the "oil canning" problem that was in a TSB. And they had to "dimple" the fender NEXT to the battery, not under it.

Try this, open your hood and grab the top of the left front fender with both hands. Push forward and backwards like you are trying to rock the truck from side to side. If you hear (and feel it) it's probably still the fender.

They did mine once and I had to go back and I worked with the service tech and we both dimpled it until it quit. There is a hole on the outer fender and a hole inside next to the battery in the inner fender. Inside those holes is where you "dimple."

Hope this helps.

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<TD align=middle width="50%">Document ID# 1516297
2004
Cadillac Escalade </TD>
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<H1>Snap/Popping Type Noise Coming From Front of Vehicle (Remove Front
Crossmember and Slot Mounting Holes) #03-08-61-002B -
(05/20/2004)</H1>Snap/Popping Type Noise Coming from Front of Vehicle (Remove
Front Crossmember and Slot Mounting Holes)

2003-2005 Cadillac Escalade</P>

2003-2005 Chevrolet Avalanche, Suburban, Tahoe</P>

2004-2005 Chevrolet Silverado with Recirculating Ball Type Steering</P>

2003-2005 GMC Yukon, Yukon XL</P>

2004-2005 GMC Sierra with Recirculating Ball Type Steering</P>

All 1500 Series (½ Ton) with Two-Wheel Drive</P>

This bulletin is being revised to add models and update the correction
information. Please discard Corporate Bulletin Number 03-08-61-002A (Section 08
-- Body and Accessories).</P><A name=ss1-1516297><A
href="http://127.0.0.1:9001/servlets/BlobShtml?ShtmlFile=1516297&psdid=564&evc= sm#ss1-1516297">
<H5>Condition</A></H5>

Some customers may comment on a snap or popping-type noise coming from the
front of the vehicle. This condition is most apparent during hard left or right
turns at low speeds. Going over bumps while turning may also aid in producing
this noise.</P><A name=ss2-1516297><A
href="http://127.0.0.1:9001/servlets/BlobShtml?ShtmlFile=1516297&psdid=564&evc= sm#ss2-1516297">
<H5>Correction</A></H5>

Slot the left side mounting holes on the front crossmember using the
procedure listed below.</P>

<LI type=1>Raise and support the vehicle. Refer to Lifting and Jacking the
Vehicle in the General Information sub-section of the Service Manual.
<LI type=1>Remove the mounting nuts, bolts and front crossmember from the
vehicle.
<LI type=1>Clean all the undercoating off the crossmember in the area of the
left side mounting holes.

<FONT color=blue>
<H4>Notice</H4>

Use a die grinder or file to cut slots. DO NOT use a torch. Using a torch
may compromise the structural integrity of the vehicle.</P></FONT>

</P>
<LI type=1>Enlarge the mounting holes on the left side of the crossmember into
slots. Cut the slots to the inboard side (toward center of crossmember) of the
holes, 2mm (0.07874in).
<LI type=1>Reinstall the crossmember with the bolts and nuts. Tighten

Tighten the bolts to 120N·m (89lbft).</P>
<LI type=1>Apply an even coat of Anti-Corrosion Coating, P/N12346501, or
equivalent to the crossmember where removed. Overlap the original coating in
order to provide an effective corrosion protection. </LI>

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<H5>Warranty Information</A></H5>

For vehicles repaired under warranty, use:</P>
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Description</P></TH>
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Labor Time</P></TH></TR>
<TR>
<TD vAlign=center align=middle>

A9976*</P></TD>
<TD vAlign=center align=middle>

Pop/Noise, Frame Rail - Repair</P></TD>
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0.5hr</P></TD></TR></TBODY></TABLE>

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<TD align=middle width="50%">Document ID# 1516297
2004
Cadillac Escalade </TD>
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That was quick!

Thanks for the info guys.
Paragon, I will try what you said on Sunday. And Clause, I will show this to the service manager also.
I'll keep you posted and thanks again.

YOU GUYS ROCK!

Guys-

I don't think applies to the H2. I just crawled under our Denali, and it has a different cross-member.

The H2 has a cross member that has two bolts on either side that a parallel with the ground.

On the Denali Yukon, the two passenger bolts are parallel, but the driver's side are perpindicular (pointing up).

Also, the front differential casing and mounting arrangement is quite a bit different as well.

...I am still looking for my front end pop/clunk

Tom

My truck is going in Thursday for a loud popping/snapping noise coming from the front right somewhere. Started out only doing it backing up slowly and turning the steering wheel max counter clockwise, now it does it forward and reverse turning the steering wheel each direction.

Might sound kind of weird but I'm hoping it's a problem with the suspension and they won't warranty it so I can finally push myself to get the lift kit done. Come to think of it that's a damn stupid reason since a shock is only like 80 bucks but it's all I need!

No!!! Get the Supercharger first! Hehe!!
I can't wait to get mine installed

...
BIG-C

<BLOCKQUOTE class="ip-ubbcode-quote"><font size="-1">quote:</font><HR>Originally posted by frank6150:
My truck is going in Thursday for a loud popping/snapping noise coming from the front right somewhere. Started out only doing it backing up slowly and turning the steering wheel max counter clockwise, now it does it forward and reverse turning the steering wheel each direction.

Might sound kind of weird but I'm hoping it's a problem with the suspension and they won't warranty it so I can finally push myself to get the lift kit done. Come to think of it that's a damn stupid reason since a shock is only like 80 bucks but it's all I need!

Well it was the crossmember so add that TSB to the list. All better now!

frank-

Do you have details on what they did to the cross member?

Thanks
Tom

I don't think Frank is referring to his H2, I think he is talking about his pickup.

I don't have a pickup anymore, it went when the H2 came home.

I am referring to the H2 and they did what was in the TSB above to fix the problem, maybe a bit different but still the same idea. I asked the guy why Hummer wasn't included but as you may have guessed by now he didn't have a clue.

make that three times............. still making noise

<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by TMKHUM:
Guys-

I don't think applies to the H2. I just crawled under our Denali, and it has a different cross-member.

The H2 has a cross member that has two bolts on either side that a parallel with the ground.

On the Denali Yukon, the two passenger bolts are parallel, but the driver's side are perpindicular (pointing up).

Also, the front differential casing and mounting arrangement is quite a bit different as well.

...I am still looking for my front end pop/clunk

You're looking at your crossmember under your trans, we're talking about the front crossmember. Beneath your front diff.
Tom </div></BLOCKQUOTE>