Rear Brake/Axle Groan...

[f5fstop]

To me, mine sounded more metallic, especially when the pickup was on the t/case. But it could be something ratching inside the t/case.
First of all, when was your vehicle made? (Manufacturing date.)
Mine was very early...

[fourfourto]

The sticker on the door says 06/05 (is that the manufacture date?)my vin is 5gtdn136668111776 I took delivery on 8/12/05. Im almost at 21,000 miles.

Assuming its not the tranfer case what could cause that kind of noise?

[f5fstop]

Your actual build date is: 06/22/2005.
It sounds like something is ratcheting. Again, my suggestion is have the tech drive it with chassis ears on the t/case and see if that is actually where the noise is coming from.

[fourfourto]

Does all the dealers have chassis ears ?

Im either going to bring it in this friday or next friday.
I think Ill stick around dealer and wait.

Do you recomend I email him a link to sound file before going in.
Maybe send one to the salesman that sold me the h3 also ,he was very nice.He also remembers my name when I see him at the dealer.

Hmmm3 when are you bringing it in

[Hmmm2]

I'm debating whether I should take it to the dealer who last told me "It'd be better if something breaks down so we can tell what's going on" .. and that "It's normal for all H3's", or, should I take it back to the dealer who said my rotor was warped and replaced my brakes. That kept the groan away (for some reason) for a couple of months. I'm going to wait a week, at least. They know the sound that mine makes. Even when hearing it, they kept a straight face. Don't forget, I went through the whole "GM" thing with a case history. I just began to brake normally yesterday, without pampering the brakes ... so the groan will begin building up again. That could take a day or a week.

f5fstop ... my build date rubbed off the side door. How can I find out what it is now? Can I tell through the vin#?

[Hmmm2]

Originally Posted by fourfourto

Does all the dealers have chassis ears ?

I'm pretty sure that f5fstop had told me long ago that each service dept should have at least one set of Chassis Ears. I guess it depends if they know how to use them, too. ()

[f5fstop]

Originally Posted by Hmmm3

I'm pretty sure that f5fstop had told me long ago that each service dept should have at least one set of Chassis Ears. I guess it depends if they know how to use them, too. ()

That, and if they know where they are in the tool room.

Hmmm3: Send me the last eight digits of the VIN and I can tell you the build date.

442: Just tell the dealer you had a friend who had the same type of noise, and the dealer used chassis ears, fixed the problem by replacing the T/case.

[f5fstop]

I just did some investigation and here is a PI that was issued:

Subject: Internal Transfer Case Noise - keywords grind growl rattle #PIP3467B -



Models: 2006-2007 Hummer H3




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PI is being updated to add model years. Please discard PIP3457A.


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The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.

Condition/Concern:
Any type of internal transfer case noise.

Recommendation/Instructions:
Engineering is conducting an investigation on internal transfer case noise. If the abnormal noise can be isolated to the transfer case using conventional methods, please contact the Technical Assistance Center for further instruction and diagnosis.

Note:: Remember do not operate the vehicle in unlock (4hi) mode on the hoist as damage to the planetary gear set may result due to an over speed condition.

Please follow this diagnostic or repair process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed.

[Hmmm2]

Originally Posted by f5fstop

Hmmm3: Send me the last eight digits of the VIN and I can tell you the build date.

f5fstop ... the last digits of my vin# are:68111746.

Thanks!