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Go Back   Hummer Forums by Elcova > Hummer H3 Discussion Forums > Technical Discussion and Customizing your H3

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  #1  
Old 11-27-2008, 08:15 PM
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Default massive clunk/knock noise

this is pissing me off, got a clunk in going forward or back wards at 5 mph and applying the brakes, its loud and you can feel it in the floorboard and it shifts the whole car with quite a audioable knock you can really feel it in the seat also !. dealer so far has replaced , both rear leaf springs, both the front and rear drive shafts and now with permission of gm the whole complete rear end unit....got a call yesterday from the service manager ,after they installed the rear end the problem is still there, dealer told me they are going to open a case Friday morning(tomorrow) and gm is having a engineer come out next week to figure out what is going on , my problems,

1/ its been 3 weeks , yea i got a loaner but its not mine hate the color too
2/ how many thousand of dollars have they thrown on it with no luck
3/ how long can they legally keep my hummer with out fixing it ???

and no i don't abuse it or massive off road it , the torsion arms were not adjusted,
its a 06 with 46k on her

wonder if they are going to give me a exchange vehicle for mine
thanks .. i have to vent over this
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Last edited by richl : 11-28-2008 at 12:59 AM.
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  #2  
Old 11-27-2008, 09:06 PM
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Default Re: massive clunk/knock noise

transmission ?
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  #3  
Old 11-27-2008, 09:13 PM
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Default Re: massive clunk/knock noise

Man! Sorry for your frustration. It drives me nuts that there are no real mechanics anymore. My dad taught me how to actually find problems and fix them. These days it seems all a mechanic can do is plug it into a computer. If that can't tell him what is wrong, then it just goes to random parts replacement. I honestly think they have a peg board in the back with part numbers all over it, and they throw darts at it to figure out what to try next.

Will it do it if you power brake it? That is hold the brakes on hard while in gear and give it some gas? Maybe hold some gas on it and shift it from drive to reverse and back. If it will then you could have someone look at moter and tranny mounts, frame crossmembers and things like that while you do it.

Could also be an internal issue in the tranny or T-case?
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  #4  
Old 11-28-2008, 12:42 AM
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Default Re: massive clunk/knock noise

brake jacking no noise. i work on automobiles all day .. i am a Ase master tech ..i spent 2 hours under it prying smacking and bouncing and didn't find **** .........

i'm starting to think cracked frame weld..........
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Old 11-28-2008, 03:22 PM
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Default Re: massive clunk/knock noise

check three things:
1)front control arm mounts/bushings at frame
2)front diff upper mounting bushing
3)torsion bars at control arms and crossmember
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  #6  
Old 11-29-2008, 09:09 PM
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Default Re: massive clunk/knock noise

guess i will find out next week what it is ..
dealership flying out one of the boys from detroit to look at it ....... this outta be funny .............
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Old 12-16-2008, 05:49 AM
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Default Re: massive clunk/knock noise

I had the same thing happen, It was a motor mount.

John
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  #8  
Old 12-17-2008, 01:55 AM
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Default Re: massive clunk/knock noise

wont do it brake jacking... only when stopping going forward and backwards ...

real pisser called last week after 1 month yep 30 days and said it was fixed the service manager even drove it and called me .... picked it up that night and didn't even get off the lot. been back in a new alpha for a week now.... said the engineers were coming down to look at it . anyone know lemon laws in Ohio ????
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Old 12-17-2008, 11:42 PM
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Default Re: massive clunk/knock noise

Quote:
Originally Posted by richl
wont do it brake jacking... only when stopping going forward and backwards ...

real pisser called last week after 1 month yep 30 days and said it was fixed the service manager even drove it and called me .... picked it up that night and didn't even get off the lot. been back in a new alpha for a week now.... said the engineers were coming down to look at it . anyone know lemon laws in Ohio ????

I think the Lemon Law applies to every state...3 times in the shop for the same problem and the dealer and or GM has to buy it back or offer you another deal.

I Googled lemon law in Ohio ...and this is what I got..try googling your self..

http://www.ohiolemonauto.com/?source=google&kw=lemon+law+ohio&gclid=COmw5vXbyJc CFQNHFQodbAJLSQ

Also take the test..

http://www.ohiolemonauto.com/quiz.html

Good Luck

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  #10  
Old 12-21-2008, 10:48 PM
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Default Re: massive clunk/knock noise

got a call from the dealer Friday . they told me they want there rental back and to pick mine up . asked if it was fixed they said no the engineers wont be out till after the first of the year , the technician thinks he knows what it is but they want the engineers to confirm this, the told me its safe to drive , but its annoying as hell to me ......

I'm starting to get pisses its been in the shop 2 times for this first time 30 days didn't ever get it off the lot and it was still there and now 2 weeks later I'm getting stroked , think when i pick it up tomorrow i am going to raise hell with them as well as the dealership owner as i feel this is total bull**** ....

think its time to call the lawyer ......
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Old 01-14-2009, 01:15 AM
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Default Re: massive clunk/knock noise

well its back into the shop engineers coming out Monday ..
in a loaner now . a 09 alpha ....

third time back into the shop first time 30 days wasn't fixed , second time 11 days still not fixed. gonna see how long the its gonna take them this time to fix it . the dealer knows I'm saying lemon law now . and they agree. kinda pissing me off.... but well see ......

updated as i get them
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