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Thank you so much! I think this is the actual answer to my problem after replacing darn near everything in the front end over the past few years.

You know it truly is amazing, somehow Even though I’ve been searching videos about my Cobalt front end vibration/shake for the past few weeks…I managed to find this specific video AFTER I just got done replacing everything in my front end 🤣😔…brakes, CV axle and seals, wheel bearing/hub, tires balanced, alignment. Now I finally find the video with the real answer. This guy is 100% correct. I noticed after tonight when I replaced my cv axle that the slop in the inner output shaft at the transmission causes the axle to oscillate when rotating. My last hurrah was to go buy new tires. Glad I at least saved myself from doing that. Thanks for the video confirmation.

I found out the pins in the inner cv must be replaced to fix it

This is exactly what I'm finding out 2. A little late for me but yes. Great video

Changed a lot of parts but it shakes like hell

I think it's your tires. I think I have a death wobble in my cobalt. I'm planning on having my tires dynamically balanced. I think most places do static balancing.

My 07 coupe sounds like plastic shaking when I hit bumps and everything seems tight when I check it. Frustrating

Thank you for the video I have poured several hundred dollars and countless hours into my front end I think you are on to something I think it's just time for me to sell the car I will say it's a good little car I just can't quite pinpoint this one issue

One question did the shake go away if you just slightly turned to the left or right? I just replaced hubs so I know it not them it just shakes when it's going straight .

Is this a problem with the automatics or manuals or both??

My 2010 HHR has the same symptoms, even after replacing the parts already mentioned and ruling out the tires. It would be interesting to know if this problem can be corrected by replacing the associated output bushings. According to some sources, through the use of a special tool, named as # J-41228, the associated "stub shaft and sleeve" (that apparently serves to couple to the CV axle assembly at the left and right trans-axle output points ), can be removed so that the bushings can be replaced, (all without removing the transmission). I don't know if this would be enough to stabilize the shaft(s), thus eliminating the vibrations. Note: Perhaps the associated internal trans-axle output bearings are bad or maybe both the bushings and bearings. Does anyone think that bushing replacement alone might be worth the try ?

I have a shake under braking but have new rotors and pads so don't understand what's up. It shakes my steering wheels like crazy.

I'm having the same issue in my 09 cobalt 136k miles. I have put new brake pads/rotors, intermediate steering shaft, new tires. the shaking is getting worse. I'll check for this issue. I don't want to do deal with a transmission rebuilt. I already replaced power window motor, throttle body failed and left me stranded, and check engine light for bad sensors. After this cobalt, no more GM vehicles for me. I was hoping to get 200k miles out of this car. the auto stores are starting to not carry parts for this car, you have to order it.

Did the shaking get worse when you put on the brakes?

Just crawled under the other day replaced so many parts. Still the noise now I know that this is an issue what’s the fix like?

Have you replaced the CV axle yet?

I have this same problem,I feel it like on the steering wheel though,when driving over 65 or braking,it shakes

For all that see this information as helpful in pin pointing your problem. At least you now know where you are with your car. Thanks for watching.

thanks bro I got the same problem

2007 Chevy impala has the same problem except it starts shaking at 40MPH or when you lift the car both front wheels are SHIMMY ALL tires New,,TWICE did the alignment and balance, I changed the entire suspension wheel bearings, sway bar and links, shocks, tie rods, control arms........ including brake pads rotors calipers First transmission lost all the gears except for the reverse .... I swapped the other one and same problem axle feels loose you can wiggle it with your hand.. Yes its transmission/axle bearings... Nothing can be done about it. Since i am mechanic myself didn't cost me much but I am never again buying GM or over all American cars.... Will stick to Japanese.

Yep

Thanks for the information

I have exact same problem. I think your right about this problem.

I just went to get this check two weeks ago was told rotors nope its scaring it's shaking when stopped at light & when I let up on gas pedal taking it back in tomorrow

Hello all, If you have a Cobalt, G5, or HHR and you have an annoying vibration at 65mph your problem is more than likely a worn out trans output bearing on the passenger side. As I mentioned in another video, I replaced everything shimmy related on the front end with no positive results. After climbing under the car for visual inspection I found all this play on the passenger side. Shame on GM for putting Bull$@#$ in these cars. Could be a really good car.

I have an HHR 2007 yeah you have helped me a lot and I'm sitting up here wondering like I can't get to this shake in my car I got my arm control fixed my rotors fixed got my tires balanced an alignment struts and still can't get to the shake