Bettermost

Thank You for your concern, I am now working with a Lady by the name of JoAnn in the Business resource center trying to negotiate a repurchase/exchange.

awright2009

Cool pictures, but here's hoping my torque converter never needs replacing

Chevy Cust Svc

You’re very welcome, Bettermost! I’m happy to hear you have been able to get into contact with someone to assist you moving forward. If you have any other questions, please don’t hesitate to ask.

Have a great day,

Angela O.
Chevrolet Customer Care

bbcb

Best news for this guy .... thank you for the efforts ... I will sleep much better tonight ...

CP

I'm getting concerned about my car. The car was built in 8/14 as a '15. Just flipped 10k miles. All is well, so far, with no symptoms of TC problems. Holding my breath.

bbcb

kind of puts a cloud over the enjoyment of ownership ...to say the least ..

iclick

My symptoms are very mild with my 12/18/14 build compared to some. In 16 months of ownership I've had a couple of days when sporadic shuddering was noticed, one of which was the first day (Feb. 6, 2015) while driving back from the dealership (60 miles). One year later almost to the day I noticed it again for about 10 miles of highway miles, after which it disappeared and hasn't returned. I wonder if temperature is a factor, as it was about 55° both days.

I noticed tach oscillation of ±50 rpm on the second event, then about ±25 rpm the next day on the same route, but since then it has not recurred or is so small that I can't make it out. The shuddering and oscillation occur only in V4 mode, and I can't figure out how TC behavior relates to cylinder deactivation. On the last occurrence I could get rid of both by simply shifting to Manual, which would disable V4 mode.

Once in a while, maybe every month or two, I get a 1-2 sec. delay and firm engagement when shifting to Drive only for the first cold crank of the day.

Other than this I can't fault the A8's performance after a software update and "fast relearn" last Nov. Before that I got minor flaring on the first 1-2 shift of the day and some indecisive downshifting at WOT, but it is faultless now.

Tadge claims the TC issues do not affect durability, and if this is true I can live with the quirks I've experienced, even if they recur sporadically. Tearing the car apart as is necessary to do a TC swap would be a decision I would make only if it got much worse and impacted durability.

rmorin1249

Sure hope a tranny reflash solves my shift issues. I haven't noticed any rpm fluctuations when cruising. Glad I bought the GMEPP.

Chevy Cust Svc

Hi iclick,

I’m sorry to hear you’ve been experiencing these unexpected shifting concerns with your Corvette. I understand how this may be frustrating, and I apologize for any inconveniences caused. If you decide to have this looked at by a dealer, please send a private message and I would be happy to assist in facilitating an appointment.

Best,
Lauren E
Chevrolet Customer Care

fratsfl

i had my torque converter replaced in nov 2016, I continue to have shuddering again.The paperwork indicates the dealer replaced torque converter with same part number as original one,problem is back again.Checked GM Parts Now and torque converter assy 24279495 has been discontinued no longer available, the correct part number for the YY(LT1,M5U) is 24280631 can anyone confirm yhis replacement as the on to fix shuddering?
Tks. Fratsfl So. West Florida.

iclick

-495 is Rev. 2 and -631 is Rev. 3 TC. AFAIK only one Rev. 3 replacement has been reported here, replaced with another -631, and that part # has been in use now for about one year. My 2015 got a -631 in Jan. 2017, so you may have been just a tad early for Rev. 3. Bummer, and you may need to get it redone if it's shuddering again. My 2015 ran fine for two weeks and I traded it on a 2017 GS M7. All is well now and I have no anxieties. Great car, flawed corporate auto tranny, IMO.

kaplana08

After seeing those pictures I would sell the car as soon as it was HOPEFULLY fixed. Would never want it back after that horror. Shame on G M they should give you a new car after that total abortion..After all how many nuts and bolts will be left out after they TRY to put it back together.Most Chevy mechanics do not have the skill to do a job that big..My dealer got one in a couple of months ago that another dealer just could not complete correctly. Horror Show.

767guy

-631 has been in use for repairs since very early 2017 based on forum members posts.
So far only one post of a -631 replacement that I have noticed with another -631. However the information in the post was not very detailed and it is possible the shop misdiagnosed the problem and changed out the TC when it could have been any number of drive line issues.

terry50

i have a 2016 stingray. when going 45 mph, in 5th gear, it sounds like a can of bolts comming from the rear end

iew

Here is what mine looked like 3 weeks ago. Drive line finally took out the crankshaft. This was the 3rd time the rear end was removed.

kaplana08

Look at the face on that guy with the blue shirt...He looks like he is thinking.......
HOLY SH-T ! There Should be a class action suit for GM to buy back every dam automatic they sold or extend the warranty to ten years. If not Corvette executives should be libel for criminal prosecution.

ddelallata

Whoah!
Glad I only had the triple-flush done on my 8/16 build date 2017 GS.
I’m really considering just trading it in for an M4 after keeping track of all of these TC problems.

GordyS

Nice to see that the dealer has all the special tools
Check out the lifting pucks:woohoo
At least he didnt break the ground effects

jwmgr8

Had my 2016 Z51 TC replaced last month. Car had about 900 miles on it and shuddered real bad. Part number for TC is 24280631, the 79495 has been discontinued. So far about 2000 miles and seems to be good.

jwmgr8

Part 24280631 appears to have fixed my Shudder?