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2006 Uplander w/heavy clunk in rear passenger


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DennyD
New User

Oct 10, 2013, 7:44 AM

Post #1 of 9 (20751 views)
  post locked   2006 Uplander w/heavy clunk in rear passenger  

2006 Chevy Uplander, 2.5l engine, 160k KMs

I have a heavy metal-on-metal clunk (sounds like a dead shock) in my rear of my 06 Chevy Uplander. Even the smallest of bumps cause the clunk. I put on new shocks and a new trackbar (both of which I was told was the problem). There are no struts on this model, just springs and shocks. There's nothing broken on the springs.

The only other thing I could think of are the control arm bushings but there's no play in them at all. I removed the spare tire and my storage area is empty. Also checked for play in the side and rear doors - all good. Any idea what is causing the sound, and more importantly, how to stop it?


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Oct 10, 2013, 8:34 AM

Post #2 of 9 (20738 views)
  post locked   Re: 2006 Uplander w/heavy clunk in rear passenger  

This isn't the kind of problem that you are going to find on a forum. You are going to find it on a drive on ramp lift with someone listening while someone else works the car up and down.



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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



DennyD
New User

Oct 10, 2013, 8:42 AM

Post #3 of 9 (20734 views)
  post locked   Re: 2006 Uplander w/heavy clunk in rear passenger  

Thanks for the reply. Sadly we've done that and we can't hear squat. Just thought that maybe someone here might have had the same issue or is a known problem.


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Oct 10, 2013, 9:54 AM

Post #4 of 9 (20733 views)
  post locked   Re: 2006 Uplander w/heavy clunk in rear passenger  

It really shouldn't be that difficult to pinpoint if the noise is consistent. A set of chassis ears would be a lot of help.



~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



Double J
Veteran / Moderator
Double J profile image

Oct 10, 2013, 10:07 PM

Post #5 of 9 (20720 views)
  post locked   Re: 2006 Uplander w/heavy clunk in rear passenger  

Agreed,shouldn't be too hard to pinpoint, especially if you have Chassis Ears as HT mentioned.

Check into these TSB's, may apply to your concern

Subject: Noise Or Clunk In The Rear Suspension - keywords bushing clunk noise rattle rear suspension thump #PIT3323C - (01/23/2007)

Models: 2005-2007 Buick Terraza 2005-2007 Chevrolet Uplander 2005-2007 Pontiac SV6 2005-2007 Saturn Relay




This PI was superseded to update Model Years. Please discard PIT3323B.

The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI. Condition/Concern:
Customers may report loud clunk or noise while driving in the rear suspension of their crossover sport Van equipped with FE1, FE2 or FE3 rear suspension. The noise maybe described as the muffler hitting the floor pan or a loud slapping noise. Recommendation/Instructions:
Inspect and replace the rear trailing arm bushing P/N 10341351 as needed.
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.




__________________________________________________________________________________________________

Subject: Stiff Rear Upper Suspension Or Shocks Clunk Over Bumps - keywords bushing cargo GMT201 noise rear #PIT3861A - (08/04/2006)

Models: 2005-2007 Buick Terraza 2005-2007 Chevrolet Uplander 2005-2007 Pontiac SV6 2005-2007 Saturn Relay Cargo or Incomplete Mobility Vehicles Only




This PI was created to add 07 MY. Please discard PIT3861.

The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI. Condition/Concern:
If the customer/fleet operator finds the suspension too hard (shocks clunk because of full extension over bumps), ask how the van will be used. If it will be loaded with several hundred pounds, the suspension will be alright. If it will be used predominately with light loads and the customer is objecting to the ride characteristics see recommendations below. Recommendation/Instructions:
Replace the rear springs with 22132418 which will reduce the spring preload by 600 pounds
  1. Make sure the customer is objecting to the ride characteristics, not the dealer sales department.
  2. Record trim heights with the original and the replacement springs and forward the information to tom.geist@gm.com.

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.


(This post was edited by Double J on Oct 10, 2013, 10:14 PM)


DennyD
New User

Oct 18, 2013, 10:53 AM

Post #6 of 9 (20672 views)
  post locked   Re: 2006 Uplander w/heavy clunk in rear passenger  

Just as the 2nd TSB said to do, I loaded the back of the van (with my wife and 4 kids - 600lbs easy) and the problem was still there, loud as ever so it's not the 2nd TSB. They say the 1st one should be ignored now but it's the last thing I've not checked.

Imagine driving on a dirt road with no shocks. That's the sound I get. I think I bought a lemon...


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Oct 18, 2013, 1:19 PM

Post #7 of 9 (20671 views)
  post locked   Re: 2006 Uplander w/heavy clunk in rear passenger  

These are the kind of things that we deal with every day and it's not rocket science to find the noise if it is load and consistent enough. Any decent tech should be able to pinpoint the noise.



~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



ebbbs
New User

Sep 16, 2014, 6:13 PM

Post #8 of 9 (19450 views)
  post locked   Re: 2006 Uplander w/heavy clunk in rear passenger  

i had loud clunking noise left rear 06 uplander changed shocks didnt help changed control arm(trailing arm) bushings whalaa no more clunk!! bushing looked fine pre removal. old bushing was like butter in a vise compared to new one. used a 3/8 extension thru busing bolt hole could move old one around so easy new one barely moved 1/8 of an inch!!


(This post was edited by ebbbs on Sep 16, 2014, 6:19 PM)


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Sep 16, 2014, 6:23 PM

Post #9 of 9 (19445 views)
  post locked   Re: 2006 Uplander w/heavy clunk in rear passenger  

Please read the FORUM RULES before posting. This question is nearly a year old.



~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.







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