A8 Transmission failure tracking
08-04-2017, 10:17 PM
#242
Thanks and enjoy your newly repaired transmission! I use the Range module with my 2016 Z06 and the A8 transmission has been flawless as has been the rest of the car.
The C7 can definitely tempt you to have too much fun if there is such a thing
The C7 can definitely tempt you to have too much fun if there is such a thing
Last edited by NSC5; 08-04-2017 at 10:17 PM.
08-05-2017, 05:53 PM
#243
Burning Brakes
Back when mine started to shudder in V4 mode, I had the tech ride along with me to show him the condition. You're right, it is easiest to reproduce with cruise on and then bump the speed +1 or 2 mph. That would make it shake every time. Before we made it back to the dealership, he said "Yep, your torque converter is bad."
Perhaps you can demonstrate your issue to them as well?
Perhaps you can demonstrate your issue to them as well?
08-09-2017, 10:17 AM
#245
Racer
2016 Z06 update
my 2016 Z06 7500 miles has shutter and vibration that get worse with speed. Car is at dealer for third time. Tomorrow will be 2 week this time 1 week each for the first 2 times. Transmission has had the triple flush and 4 wheel and 2 tires have been replaced. I think the original wheels are now back on. Dealer has vibration sensors on car and is working with GM.I've been working with customer care for 3 weeks.
Monday 8/7 I sent Mary Barra email asking for help. Today Wed 8/9 received call from Chevrolet Executive Office with a new case # that they
would check into the problem. 3 trips to dealer for a total of 28 days so far.
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Preston7 (08-17-2017)
08-09-2017, 10:43 AM
#246
Ron,
With the case # from the exec office you will get more responsive service.
With your symptoms it does NOT sound like the typical A8 torque converter issue, especially since these are extremely rare with the Z06 since it hardly ever goes into V4 mode even if you don't use manual mode or a Range module.
Does the vibration persist with the transmission in neutral and the vehicle coasting?
Since it apparently wasn't wheels or tires it could easily be an axle shaft, differential, torque tube/shaft, etc.
Good luck on a speedy and proper resolution!
With the case # from the exec office you will get more responsive service.
With your symptoms it does NOT sound like the typical A8 torque converter issue, especially since these are extremely rare with the Z06 since it hardly ever goes into V4 mode even if you don't use manual mode or a Range module.
Does the vibration persist with the transmission in neutral and the vehicle coasting?
Since it apparently wasn't wheels or tires it could easily be an axle shaft, differential, torque tube/shaft, etc.
Good luck on a speedy and proper resolution!
08-09-2017, 03:54 PM
#247
Racer
The Z06 is back in the shop for the fourth time with A8 transmission issues. Had all the fun stuff completed- transmission relearning twice; stator assembly replaced; triple flush and now currently in for complete transmission replacement as soon as GM can get one to the dealer. Current ETA unknown.
Always the same issue, delay going into first from park after sitting and then a severe lurch forward when first gear does engage along with a hard second to first downshift. Always fun.
UPDATE
Z06 is back in the garage. The dealership received the transmission one week after order was placed. Transmission and new TC installed after 1 1/2 days and all appears well however I'll know more after I drive it and let it sit a day or two and start with a cold tranny. So far all shifts are smooth with no lurch or heavy downshift.
Always the same issue, delay going into first from park after sitting and then a severe lurch forward when first gear does engage along with a hard second to first downshift. Always fun.
UPDATE
Z06 is back in the garage. The dealership received the transmission one week after order was placed. Transmission and new TC installed after 1 1/2 days and all appears well however I'll know more after I drive it and let it sit a day or two and start with a cold tranny. So far all shifts are smooth with no lurch or heavy downshift.
Last edited by time2run; 08-15-2017 at 04:45 PM.
08-09-2017, 05:39 PM
#248
Drifting
Member Since: Jan 2015
Location: Fleming Island Florida
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The Z06 is back in the shop for the fourth time with A8 transmission issues. Had all the fun stuff completed- transmission relearning twice; stator assembly replaced; triple flush and now currently in for complete transmission replacement as soon as GM can get one to the dealer. Current ETA unknown.
Always the same issue, delay going into first from park after sitting and then a severe lurch forward when first gear does engage along with a hard second to first downshift. Always fun.
Always the same issue, delay going into first from park after sitting and then a severe lurch forward when first gear does engage along with a hard second to first downshift. Always fun.
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time2run (08-10-2017)
08-09-2017, 07:01 PM
#249
Le Mans Master
Member Since: Sep 2014
Location: lake havasu city arizona
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The Z06 is back in the shop for the fourth time with A8 transmission issues. Had all the fun stuff completed- transmission relearning twice; stator assembly replaced; triple flush and now currently in for complete transmission replacement as soon as GM can get one to the dealer. Current ETA unknown.
Always the same issue, delay going into first from park after sitting and then a severe lurch forward when first gear does engage along with a hard second to first downshift. Always fun.
Always the same issue, delay going into first from park after sitting and then a severe lurch forward when first gear does engage along with a hard second to first downshift. Always fun.
Best of luck to you
NSF
08-09-2017, 07:24 PM
#250
Instructor
The Z06 is back in the shop for the fourth time with A8 transmission issues. Had all the fun stuff completed- transmission relearning twice; stator assembly replaced; triple flush and now currently in for complete transmission replacement as soon as GM can get one to the dealer. Current ETA unknown.
Always the same issue, delay going into first from park after sitting and then a severe lurch forward when first gear does engage along with a hard second to first downshift. Always fun.
Always the same issue, delay going into first from park after sitting and then a severe lurch forward when first gear does engage along with a hard second to first downshift. Always fun.
08-09-2017, 08:18 PM
#251
Racer
This question is for you and all members who have had major transmission work done under warranty: While your Vette is in their shop for a week or so, do they give you a loaner car or at least reimburse a rental fee or does that vary from dealer to dealer? I am the prospective buyer of a new GS, so I am trying to get as much info as possible before I buy one with an A8.It would be nice to hear feedback about this from others.
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bsterling9 (08-10-2017)
08-09-2017, 08:54 PM
#252
Drifting
Member Since: Jan 2015
Location: Fleming Island Florida
Posts: 1,834
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This question is for you and all members who have had major transmission work done under warranty: While your Vette is in their shop for a week or so, do they give you a loaner car or at least reimburse a rental fee or does that vary from dealer to dealer? I am the prospective buyer of a new GS, so I am trying to get as much info as possible before I buy one with an A8.It would be nice to hear feedback about this from others.
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bsterling9 (08-10-2017)
08-10-2017, 03:12 AM
#253
This question is for you and all members who have had major transmission work done under warranty: While your Vette is in their shop for a week or so, do they give you a loaner car or at least reimburse a rental fee or does that vary from dealer to dealer? I am the prospective buyer of a new GS, so I am trying to get as much info as possible before I buy one with an A8.It would be nice to hear feedback about this from others.
Heidi
Save the Wave
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bsterling9 (08-10-2017)
08-10-2017, 08:06 AM
#254
Racer
This question is for you and all members who have had major transmission work done under warranty: While your Vette is in their shop for a week or so, do they give you a loaner car or at least reimburse a rental fee or does that vary from dealer to dealer? I am the prospective buyer of a new GS, so I am trying to get as much info as possible before I buy one with an A8.It would be nice to hear feedback about this from others.
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bsterling9 (08-10-2017)
08-10-2017, 08:08 AM
#255
Racer
Just in case you missed it in my earlier post, may I suggest you ask your dealer where the new transmission is coming from AND does it contain the new valve-body that GM is making now? (see part number in the work order above.) I have had mine fail the same way; even with the brand new "redesigned" transmission. The last engineer my tech spoke with told him he was sending the new valve-body and NOT to use any part that may be readily available. So far, mine has been perfect. Hoping it stays that way!
Last edited by time2run; 08-10-2017 at 08:08 AM.
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stevettec7 (08-10-2017)
08-11-2017, 04:09 PM
#256
2016 Stingray A8 TC Being Replaced
Well my 2016 Stingray (September 2015 Build) is having the TC replaced. 1 week worth of diagnosis and sending info to the Chevy mother ship and the prognosis is to replace the TC which will happen next week. I had a bad shudder starting at around 40 MPH when going from 8 cyl to 4 cyl and then then the rumble strip thuds when changing from overdrive to drive at cruising speeds (50-80) on the highway and when changing gears on the highway.
08-11-2017, 05:09 PM
#259
08-11-2017, 07:04 PM
#260
Cruising
A8 transmission problems
My A8 problems started at only 3500 miles. I didn't trust my dealer to actually fix the problem and leaving it with those clowns for weeks to sit outside and be covered with bird crap was out of the question. I got rid of it. Problem solved for good.
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CWalker67 (08-11-2017)