Last post on Jun 18, 2013 at 6:26 PM
You are in the Chevrolet Cobalt
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Chevrolet Cobalt, Transmission, Coupe, Sedan
#86 of 95 Tranny Issues Again at 92,000 miles
Aug 10, 2012 (4:58 pm)
My 2008 Cobalt is in the shop again. The previous TCC valve fix only lasted for 15,000 miles. The tranny is fluttering between 3rd and 4th gear AGAIN for the last 15,000 or so miles. Again, I had difficulty with the service advisor repeating the issue. I had to grab the previous service advisor and ride shot gun to explain how and when the tranny acts up. Between 30 - 45 mph under no acceleration, the fluttering happens. The tachometer will jump up and down bucking the car as the engine shifts repeatedly from 3rd to 4th gear. Irritating! The dealership is ordering a new valve body and torque converter while I drive a new Impala loaner car. I'm on day 5 and the car is not expected to be fixed until Tuesday or Wednesday next week so another 4 days. This will be the second torque converter but first valve body. The valve body is the key. I had to get it into the shop before the 100k warranty expired. This problem is hard to duplicate if the mechanic has never experienced this problem. Don't be shy demanding to ride shot gun with the service advisor. My dealer is pretty good with me. They know I can be a a**hole if pushed too far. I had the ignition cylinder replaced too. I've had problems either taking the key out or putting the key in and attempting to turn on the car. The recall came in the mail and I took care of it while the tranny was being worked on. Good Luck
#87 of 95 07 Chevy Cobalt Transmission Issues
Aug 17, 2012 (8:04 am)
#88 of 95 07 Chevy Cobalt Transmission Issues
Aug 17, 2012 (8:04 am)
My Cobalt has 140,000 miles and I recently experienced a horrible shuddering sound. It seems as if it isn't shifting gears. I see others have experienced some similar issues. Is there a solution? How much do the repairs run?
Thanks in advance for your input
#89 of 95 Re: Similar issue [fixmycobalt]
May 23, 2013 (10:17 am)
I have the same problem with flutter at low speed and it lurches forward. Service guys act like this is not a Cobalt problem oh but it is because several people have stated the same issue. My car is under warranty until some time in June I hope they figure it out or I will be there every other day. I also have noticed there is a electrical issue with this car. Blinkers and clickers don't work any more nor do the front speakers. I was told to replace the front driver side speaker and all problems will be resolved. Now if they can just figure out what is up with the transmission fluttering and lurching also recently not shifting into the last gear so my rpms are real high.
#90 of 95 PLEASE HELP- 2006 manual jerking/shaking upon acceleration from stop!!!!!!!
Jun 17, 2013 (11:15 pm)
I own a 2006 Cobalt LS, coupe, 5 speed manual, with 75,000 miles. Recently I have been experiencing what I believe to be a transmission/clutch issue. I am a mature adult driver (no hot rodding), however I am the second owner of this vehicle. I am very competent mechanically and have owned many manual trans vehicles, including multiple GM 5 speeds. The following is the issue I am currently experiencing:
When accelerating from a complete stop, the car starts jerking/shaking from 1st to 2nd. I have noticed that it does more so when there is additional weight in the vehicle (i.e. 3 average size adults, rater than just the driver only).
When this happens the whole car shakes and rattles. It doesn't seem to matter what speed the clutch is released/feathered. I have also experimented with different shift patterns and RPM ranges, only minor changes if any? It feels as though the clutch is being 'dumped' in a low RPM, but just enough to keep the car from dying. From a bystander's view it looks as though the driver is first learning to drive.
I am not aware of any other mechanical issues. Also, just to note this doesn't occur when the car is accelerating from a rolling start. Only when there is the initial force to overcome. As I stated it is amplified by extra weight. I do not experience this in any other gears.
I thank you in advanced for your help and I pray (literally) that this doesn't mean I need a new clutch or transmission.
#91 of 95 Re: Similar issue [nikkikett]
Jun 18, 2013 (5:41 pm)
Do replace the driver side speaker and that will fix that issue. On the other please read the rest of my posts so you know what to tell the tech when you take your Cobalt back to the service dept. This is a power train issue that should be covered under warranty up to 100k miles. I will also look back at post to find the correct verbage so you know. Do not pay anything for this is a GM problem that I discovered and they will not acknowledge. I will get back to you. Keep the faith!!! I had mine fixed over a year ago after much mcuh research!!
#92 of 95 Re: PLEASE HELP- 2006 manual jerking/shaking upon acceleration from stop!!!!!!! [ahoda]
Jun 18, 2013 (5:42 pm)
Please look at post 91. and also read my early post. I will get back with you as well.
Jun 18, 2013 (5:45 pm)
The Torque Converter Clutch [TCC] "Lock-up" sequence can cause problems, to test if the TCC is the problem try this.
This is a power train issue and is covered under 100k warranty but GM will fix due to faulty issue. Do not pay for this fix. Keep smiling!!!!
#94 of 95 Re: PLEASE HELP- 2006 manual jerking/shaking upon acceleration from stop!!!!!!! [mountainboy1]
Jun 18, 2013 (6:03 pm)
Yes, I have read every post on here. But as far as I know there are no TCC on a manual trans. I may be wrong but can't find any resources that say it does.
Only post #36 come slight close to what I am experiencing. And I believe no one ever answered.
#95 of 95 Re: PLEASE HELP- 2006 manual jerking/shaking upon acceleration from stop!!!!!!! [ahoda]
Jun 18, 2013 (6:26 pm)
I'm really sorry to hear about this issue you are having. Could you please send us an email to socialmediagm.com. In the email please provide us your name, address, phone number, vehicle identification number, and current mileage.
GM Customer Care