[Chevrolet Customer Svc]

Originally Posted by DiGiam

My car has recently started doing the same thing. Feeling like driving on rumble strips or something. Today it was doing it a little bit after every shift as well at part throttle but most of the time it at low speeds and going slightly uphill. I have put it in manual mode to make sure it's not in V4 too. It is getting frustrating and I just don't want to have to deal with this crap with a brande new car. First the rear end and now the torque converter

Originally Posted by ThePandaSmuggler

Interesting, I have this same issue. It's very intermittent. Also it doesn't matter what kind of road I'm on. I figured it was something to do with the diff. TC would make sense seeing that I'm in an I4 with the 8-speed auto.

Hi DiGiam and ThePandaSmuggler,

To clarify, have you been able to bring this concern to the attention of your dealer? In either instance, we'd be more than willing to offer our assistance and reach out on your behalf.

Please feel free to send us a private message so that we may take the next steps!

Kindly,

Angela O.
Chevrolet Customer Care

[Megahurtz]

My car is going into the dealer on Jan 2nd for the dreaded A8 issue. I have the shudder and shaking on sight throttle inputs when cruising at 45mph or higher. It is extremely annoying. I hope my dealer will just fix it right the first time. I don't want to deal with this going back and forth to the dealer garbage on a brand new 2017 with 1500 miles. Not to mention I have a clicking in the front left wheel and a dead HMI module which I've been waiting on a new one for a month now. I have to say out of all the new cars I've ever purchased this is by far the WORST experience ever. I don't think I will ever buy another brand new GM car after this experience.

[craigcurry]

Yesterday in got into my wife's Camaro, 2SS A8, and drove to the dealership where we bought the car on another matter. While driving to the dealership at speeds around 60 mph I felt the car shudder like I was going over rumble strips in the road but there where no rumble strips on the roadway. The shudder would come in for about 5 or 6 seconds and then go away and come back after about 5 or 6 seconds. I thought that the car was caught going in and out of V8/V4 mode. Tomorrow I will take the car out on a roadway that I know is smooth as silk and determine if it still shudders.

[Megahurtz]

Originally Posted by craigcurry

Yesterday in got into my wife's Camaro, 2SS A8, and drove to the dealership where we bought the car on another matter. While driving to the dealership at speeds around 60 mph I felt the car shudder like I was going over rumble strips in the road but there where no rumble strips on the roadway. The shudder would come in for about 5 or 6 seconds and then go away and come back after about 5 or 6 seconds. I thought that the car was caught going in and out of V8/V4 mode. Tomorrow I will take the car out on a roadway that I know is smooth as silk and determine if it still shudders.

How many miles on her 2SS?

[craigcurry]

About 2300

[streetjudge79]

Well I dropped it off again at the Chevy dealer. They decided it was the torque converter and are replacing it. I thought I told them that 2 weeks ago! LOL. They had just gotten a Corvette in that was doing the same thing. Hopefully I get it back today and I'll let you guys know if that fixed the vibration issue.

[kgf]

I am also getting my torque converter replaced today for the shudder issue. I was the first reply to your post on the 11th. Coincidence we both get torque converters on the same day. Good Luck on yours.

[streetjudge79]

Thanks man, same to you! Mine will be ready tomorrow for pickup. Keeping my fingers crossed!

[kgf]

Thanks. They finished car right at quitting time. They say it is a 10 hour job. They didn't get a chance to drive the car. Will be picking my car up tomorrow. Keeping my fingers crossed too!

[DiGiam]

I have an appointment to drop the car off Monday at the dealer. I can easily recreate the issue so I'm going to ask a tech to ride with me and see where this goes.

[streetjudge79]

Mine wasn't ready yesterday, hoping for today.

[obarry13]

Originally Posted by Chevrolet Customer Svc

Hi DiGiam and ThePandaSmuggler,

To clarify, have you been able to bring this concern to the attention of your dealer? In either instance, we'd be more than willing to offer our assistance and reach out on your behalf.

Please feel free to send us a private message so that we may take the next steps!

Kindly,

Angela O.
Chevrolet Customer Care

So mine has been doing this for about 2 months now. I brought it to my dealer and they told me "it was the nature of the beast and happens a lot on their V8s" They told me there was absolutely nothing they can do. I plan on bringing it in again in the next week or so since the vibration has gotten worse.

Originally Posted by DiGiam

I have an appointment to drop the car off Monday at the dealer. I can easily recreate the issue so I'm going to ask a tech to ride with me and see where this goes.

I was going to do this as well as they said they could barely feel it (although I told them it was a highway issue 55mph+, yet somehow they drove the car 15 miles and got an average of 8.5 mpg, aka flooring it and treating my car like shit. They should easily get 25+ mpg driving at highway speeds to test for this).

[streetjudge79]

Well, I just picked it up. They replaced torque converter, changed transmission filter, and flushed it. Drives like it should now, no more shudder at all! Even shifts easier through the gears.

[streetjudge79]

OH and there was also a sleeve missing from a transmission pipe that they found.