Clunk noise in my 2007 Chevrolet HHR or Pontiac G6
23,00 miles.
I have a clunk noise in the front end of my HHR. It happens when i am  turning the  
wheel, and also when going over bumps in the road. Most of the time it is when going  
over a set of rail road tracks. I had the steering and struts checked at a local shop, but  
they said they did not see anything. Is there a common problem with these cars?
Common cause of of clunk noise in the front end of my 2007, 2008, 2009 Chevrolet HHR when going over bumps or turning while driving. This also may be the problem for the Cobalt, Pontiac G6 and similar models.
By what you are describing, this sounds like a common problem on the HHR, Cobalt,  Pontiac G6
and other models 2008 and 2009, with a 'Front stabilizer bar link / arm, or the a
lower control arm bushing. There is one on  each wheel. It connects the lower control arm to the  
front stabilizer bar. The bar helps  control body roll when turning. There is a ball socket  joint on the
top and bottom of the  arm. (See pic below).  
With the year and mileage, this noise condition would be under the factory warranty,  even if this is
not  the problem.
Clunk in Chevy HHR and Pontiac  G6
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9-26-10
No had that fixed 285 dollars took it to a tire repair place needed new tires also, they found broken
spring, and boot, replaced both springs, and one boot, noise gone, cost approx. 900 more.
Comments
10-06-10
My Cobalt did this twice. Both times the dealer replaced the steering column. 7,200 miles between
placements.
Question: I have a G6 and my husband drives a HHR. I had a "popping" noise in my G6 last year
whenever I would turn the wheel, and it ended up being a lube kit (service bulletin is available for
this part and should be covered by GM service shops). My husband has clunking in his HHR when
he drives over bumps, railroad tracks, etc and we've been told it's quite possibly the wheel bearing.
Answer: Most likely it is not a wheel bearing causing a clunking noise
over bumps. If the wheel bearing is bad, it usually makes a growling
noise that gets louder the faster you drive. If it is bad enough to cause a
clunk, you would have heard it making noise for a long time before that.
The most probable parts making noise over bumps are the front sway
bar end links, or lower
control arm bushings. More often than not, both of
these are bad together and need replaced. If you can get the car in the
air, you can check play in the sway bar end links, and look to see if the
front lower control arms are down against the subframe at the rear
attaching point. Replace in pairs is advisable for either part.
1-1-11
HOW DO YOU RESET OIL CHANGE LIGHT AFTER OIL CHANGE
Either step on the gas pedal to the floor and release- do
this 3 times within 5 seconds. Or use the information
center buttons. Page to "Oil Life %" then hold the enter
button for 5 seconds. See owners manual as well.
2-8-11
Also the sector shafts on these cars are very common for making popping noises. This is the shaft
that connects column to the rack and pinion. Most common ones were between 2003 and 2006
model years.

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8-2-11
I own a 2009 HHR 11000 miles on it now. 7600 when I purchased it this May. Had front noise
problems from day on, July 16, axle broke. Took to dealer 2 weeks earlier found no problems.
8-18-11
mine a 2009 replaced strut fixed problem for a week now clunk back.
I would check into the front sway bar end links or front
control arm bushings. Those are usually the two most
common things that cause a clunking noise on your type
of vehicle.
10-1-11
I am looking at buying a 2006 HHR and the owner said the sway bar ??? I think bushings need to
be replaced. What would be the average cost to replace these if I brought the car into a dealership
or shop?
Replacing links or link bushings at a dealer will probably
run you about $200 including parts and labor. You may
want to check the front control arm bushings as well, as
those are known to fail on the HHR models too. Estimate
for that is about $40 with a front end alignment. Any of
these problems will make a clunk or knock noise over
bumps or while turning, like a metal to metal sound.
12-31-11
My 2007 G6 required $1700.00 of front end repair at 56,000 miles.