Hate to ask
Thread Starter
Pro
Joined: Oct 2011
Posts: 703
Likes: 76
From: leesburg fl
St. Jude Donor '12
Hate to ask
hate to ask about a A-8
My car is a 2017 2lt base vert with a build date of sept 16
I now have 11k on my car with no problems, However today I had to run from central fl to south georiga on the interstate.
I set the cruise on 72 mph in sport mode. When the car was under a load (taking off or slight incline) it seemed ok. When the car leveled off the rpms jumped a little up and down. but the car felt like the tires had a buldge in them or I was driving over rumble patches in the road.
I changed lanes same thing. Different road same thing. Enough to feel it in the bottom of the seat like something out of balance.
My car is a 2017 2lt base vert with a build date of sept 16
I now have 11k on my car with no problems, However today I had to run from central fl to south georiga on the interstate.
I set the cruise on 72 mph in sport mode. When the car was under a load (taking off or slight incline) it seemed ok. When the car leveled off the rpms jumped a little up and down. but the car felt like the tires had a buldge in them or I was driving over rumble patches in the road.
I changed lanes same thing. Different road same thing. Enough to feel it in the bottom of the seat like something out of balance.
Racer
Joined: Nov 2008
Posts: 276
Likes: 76
From: Florida
Those are the exact symptoms of the torque converter "shudder." Have your dealer refer to PIP 337 and TSB 15-NA-016 if they have any questions. As mentioned above, the first step is a "triple flush." If the shudder and rpm fluctuations are not completely gone after 200 miles, the next step is to replace the torque converter. The "triple flush" seems to have done the job on mine. GL
Safety Car
Joined: Sep 2001
Posts: 4,495
Likes: 1,263
From: Jacksonville FL
Welcome to the club, as mentioned, you have a bad torque converter. Mine was replaced in early 2016 and my transmission has been flawless since. Your dealer will have to try the triple flush first. Hope this works for you, much better than having to remove and replace your TC. The shudder will get worse if you don't take your car in for diagnosis. Good Luck.
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Le Mans Master
Joined: Oct 2004
Posts: 9,217
Likes: 153
From: Ft Mill, SC
The power train warranty is 5 yrs / 100,000 miles whichever comes first for I believe the 2014 and 2015 model years. It changed to 5 yrs / 60,000 miles whichever comes first in either 2016 or 2017 if I remember correctly.
If one plans to keep an unmodded auto tranny C7 beyond the 5 yr period, one might consider getting a GMEPP extended service contract from Dennis Fictner, a well known forum vendor to cover the possibility of the STILL unresolved A8 tranny issues.
If one plans to keep an unmodded auto tranny C7 beyond the 5 yr period, one might consider getting a GMEPP extended service contract from Dennis Fictner, a well known forum vendor to cover the possibility of the STILL unresolved A8 tranny issues.
Last edited by musclecar6; Dec 8, 2017 at 07:48 AM.
Burning Brakes
Joined: Sep 2015
Posts: 1,035
Likes: 384
From: Williamsburg VA
That's a lot of miles in 10 weeks, unless you mean Sept of 2016...perhaps part of the problem?
Last edited by mtaxman; Dec 8, 2017 at 09:20 AM.
Safety Car
Joined: Sep 2001
Posts: 4,495
Likes: 1,263
From: Jacksonville FL
The power train warranty is 5 yrs / 100,000 miles whichever comes first for I believe the 2014 and 2015 model years. It changed to 5 yrs / 60,000 miles whichever comes first in either 2016 or 2017 if I remember correctly.
If one plans to keep an unmodded auto tranny C7 beyond the 5 yr period, one might consider getting a GMEPP extended service contract from Dennis Fictner, a well known forum vendor to cover the possibility of the STILL unresolved A8 tranny issues.
If one plans to keep an unmodded auto tranny C7 beyond the 5 yr period, one might consider getting a GMEPP extended service contract from Dennis Fictner, a well known forum vendor to cover the possibility of the STILL unresolved A8 tranny issues.
Good advice. Probably more people keep their cars longer than 5 years vs 100k/60K miles coming first before 5 years. If you have the A8 and plan to keep your car longer than 5 years I would most definitely consider a GM Extended Warranty. I think a new A8 tranny is around 6K without including labor.
Melting Slicks
Joined: Jan 2013
Posts: 2,576
Likes: 237
From: Murphy NC
All of your cars info can be found:
https://my.chevrolet.com/login
Just create an account and enter your VIN.
There are a few cool features if you put the app on your phone you can start the car from anywhere and push maps from phone to car.
https://my.chevrolet.com/login
Just create an account and enter your VIN.
There are a few cool features if you put the app on your phone you can start the car from anywhere and push maps from phone to car.
Melting Slicks
Joined: Dec 2015
Posts: 2,209
Likes: 933
From: Just outside a swamp in Florida
After you’ve had the triple-flush band-aid, put the required miles on it, if you are still having problems, and you don’t have a dealer you feel comfortable with taking on th TC replacement, as it is a is major operation. Stingray Chevrolet in Plant City has replaced many of these. They just finished mine about a month ago, and I know they’ve done other forum members.
Good luck!
Good luck!
Last edited by L8ter; Dec 8, 2017 at 01:05 PM.
Thread Starter
Pro
Joined: Oct 2011
Posts: 703
Likes: 76
From: leesburg fl
St. Jude Donor '12
After you’ve had the triple-flush band-aid, put the required miles on it, if you are still having problems, and you don’t have a dealer you feel comfortable with taking on th TC replacement, as it is a is major operation. Stingray Chevrolet in Plant City has replaced many of these. They just finished mine about a month ago, and I know they’ve done other forum members.
Good luck!
Good luck!
Thread Starter
Pro
Joined: Oct 2011
Posts: 703
Likes: 76
From: leesburg fl
St. Jude Donor '12
Welcome to the club, as mentioned, you have a bad torque converter. Mine was replaced in early 2016 and my transmission has been flawless since. Your dealer will have to try the triple flush first. Hope this works for you, much better than having to remove and replace your TC. The shudder will get worse if you don't take your car in for diagnosis. Good Luck.
I was told that my car does in fact have a problem and they have to follow a new TSB dated Dec 1st. They will change the transmission fluid and replace the filter. (I dont remember the name of the fluid he said H something) Anyway the service writer said if that dont fix it then we will replace the TC
