More A8 transmission problems
09-15-2018, 08:09 AM
#21
Drifting
It seems weird to me... I mean, it seems like there is a design / production flaw in the A8 (somewhere) so I don't understand expecting the problem to be fixed by taking out the current tranny and putting in another one just like it. SMH...
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c5arlen (09-04-2023)
09-15-2018, 08:19 AM
#22
Why would you say too many gears.? You don't t have to use them. I shift from first to third all the time. Never need second gear then third to fifth.
09-15-2018, 12:52 PM
#23
Intermediate
Thread Starter
The shudder problem on my '15 was corrected by the installation of a new torque converter, but the harsh shifting remains, especially from Park to Drive and from Reverse to Drive. Has anyone experienced a lasting fix for this problem? From the comments I have read, I am not optimistic that there is one.
When they put a new transmission and tourqe converter on mine it last about 2 months before the problems started again.
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c5arlen (09-04-2023)
09-15-2018, 01:21 PM
#24
M7 is great. Never use the 7th gear, nothing says you have to. It is not an automatic, some folks never go higher than number 4. Not really concerned about gas mileage that's why I didn't buy a Prius.
09-15-2018, 02:56 PM
#25
Safety Car
Yup
Really? "One too any gears" would dissuade you? So don't use seventh. It only .09 difference from sixth anyway. It's the smoothest manual I have ever driven, a real delight. I use seventh all the time on fast freeways. It probably makes little difference mpg wise, but I like having it there. To NOT buy an M7 because it has one more gear just seems nonsensical to me. Better grab it while you can because it just might not be there very much longer.
09-15-2018, 03:12 PM
#26
Melting Slicks
What a nightmare for you A8 owners. I googled up some truck forums and they have A8 issues too....... And many of their dealers and GM are telling them they are the only one's complaining too!!!!
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Double Aught (09-20-2019)
09-15-2018, 03:23 PM
#27
Race Director
Really? "One too any gears" would dissuade you? So don't use seventh. It only .09 difference from sixth anyway. It's the smoothest manual I have ever driven, a real delight. I use seventh all the time on fast freeways. It probably makes little difference mpg wise, but I like having it there. To NOT buy an M7 because it has one more gear just seems nonsensical to me. Better grab it while you can because it just might not be there very much longer.
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JLSuperfly (12-21-2019)
09-15-2018, 03:56 PM
#28
Racer
:
i didn’t use seventh much at first but in the last few months I found myself “looking for another gear” love the M7
One too any gears" would dissuade you? So don't use seventh. It only .09 difference from sixth anyway. It's the smoothest manual I have ever driven, a real delight. I use seventh all the time on fast freeways.
i didn’t use seventh much at first but in the last few months I found myself “looking for another gear” love the M7
09-15-2018, 04:01 PM
#29
Le Mans Master
Member Since: Sep 2012
Location: Hagerstown MD
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St. Jude Donor '15-'16,'18
Mine goes in next week for a fluid flush I hope.
Last edited by rmorin1249; 09-15-2018 at 04:02 PM.
09-15-2018, 04:05 PM
#30
Drifting
You guys just don't get it, but I know what he means. I feel the same way, I felt like the 6 speed in my C6 was the perfect amount of gears, and spaced nicely and each was easy to find. But there comes a point when they just put too many gears in a manual transmission and it becomes more difficult to quickly find the one you want because they are all spaced too closely together. So just telling the person to avoid that 7th gear doesn't solve the inherent problem with having too many gears.
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JLSuperfly (12-21-2019)
09-15-2018, 04:48 PM
#31
Drifting
I have a M7 so I dont have the problem but GM and the dealer can say its normal all they want. It is not normal. The trans should not shudder or jump in gear either they fix it or replace the trans again. Many Corvette owners I know here with the A8 have had problems and the trans flush seems to have cured their problem with the shuddering. 
09-15-2018, 04:52 PM
#32
. It’s just the third overdrive gear in the box.
09-15-2018, 06:56 PM
#33
Patman gets it, lol...
Let me explain myself. A 7 speed manual is not natural. It is not a perfect "H" configuration/pattern. With the M7, I'm afraid I will have to double check myself to see what gear I'm in, when I'm in gears 5-6. It's just counterintuitive - for me, lol...
The 6 speed manual has two "H" patterns. (HH). Reverse gear is either logically at the far lower right corner, or at the far upper left corner of the H pattern/configuration. The two "H" patterns are for gears 1-6.
That seventh gear is just odd!
It appears from what I've read that gears 5-7 are overdrive gears... If this is true, then why give me three OD gears? I could care less about MPG... This is not the car for gas consumption concerns...
I am/was fine with 4 speed, 5 speed and 6 speed manuals. M7 is just weird/unnatural for me.
Those who don't get it; we can agree to disagree, eh?
Cheers/Best,
BB
Let me explain myself. A 7 speed manual is not natural. It is not a perfect "H" configuration/pattern. With the M7, I'm afraid I will have to double check myself to see what gear I'm in, when I'm in gears 5-6. It's just counterintuitive - for me, lol...
The 6 speed manual has two "H" patterns. (HH). Reverse gear is either logically at the far lower right corner, or at the far upper left corner of the H pattern/configuration. The two "H" patterns are for gears 1-6.
That seventh gear is just odd!
It appears from what I've read that gears 5-7 are overdrive gears... If this is true, then why give me three OD gears? I could care less about MPG... This is not the car for gas consumption concerns...
I am/was fine with 4 speed, 5 speed and 6 speed manuals. M7 is just weird/unnatural for me.
Those who don't get it; we can agree to disagree, eh?
Cheers/Best,
BB
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09-15-2018, 07:54 PM
#34
Le Mans Master
I have never had any issues with my M7 in finding gears 5-7 I just push the shifter as far right as possible and either go up or down.
09-18-2018, 11:07 AM
#35
Intermediate
Thread Starter
I would like to give a little update on my situation. Last week I contacted GM about the problems I have been having. They left me a voicemail yesterday. In the message the representative assigned to my case said that they also contacted my dealership and the manager that I was working with. The manager told him everything is normal and they tested another corvette and they shift the same. Okay that's fine, the rough shift once or twice a day doesn't bother me at all. Now the manager at my dealership tells the guy at GM that I’m really rough on my car and it’s probably learning to shift how I shift. You can say my car is "normal" all you want, most of us owners know how are cars should act. I've put over 30,000 miles on my car, I think I know it better than a service manager who doesn't even work on the cars. But the part that really has me mad now is that he is blaming me for how the car is driving because I am "rough" on my car. I am calling GM back today to give them the full story, which I'm sure my dealership's service manager failed to mention. Like how they put 60 miles on my car last time and wrote it down as 5. How they ordered an arm rest for me last year and then told me about it in May, and then tried to charge me $350 for it. Like how my car has the same symptoms as last time when they put a new tranny in and now it’s normal.
09-18-2018, 11:21 AM
#36
After those first incidents, I woulda just found a new dealer.
09-18-2018, 11:24 AM
#37
Intermediate
Thread Starter
The first incident they were accommodating. They gave me a new loaner Silverado for over two weeks while everything was going on. But personally I think its the service manager who is the problem. He has had an attitude with me since I told him I wasn't going to pay for my armrest that was ordered while everything was still under warranty. It's not my fault that they failed to tell me that they ordered the part. But yes, after this incident I will most definitely not be going back, I'll be driving over an hour to a different dealership.
09-18-2018, 03:03 PM
#38
Safety Car
[QUOTE=Hwillner;1598004900]The first incident they were accommodating. They gave me a new loaner Silverado for over two weeks while everything was going on. But personally I think its the service manager who is the problem. He has had an attitude with me since I told him I wasn't going to pay for my armrest that was ordered while everything was still under warranty. It's not my fault that they failed to tell me that they ordered the part. But yes, after this incident I will most definitely not be going back, I'll be driving over an hour to a different dealership.[/QUOTE
]I owned a Dodge Daytona back in the 90's that threw a rod after six months They kept the car for weeks. Instead of putting in a new short block, they ordered every single component to rebuild the motor. When we got to day 27, I told them I was invoking the lemon law to get a new car. The next day they said the motor was put back together, but my clutch was worn out. They would replace it for $250. I told them that was bull, and would be there in two hours to see the clutch myself. When I get there, my car was all put together and ready for pickup. They claimed they re-looked at the clutch and it was ok.
This was their ploy to make some money on a warranty repair, the same with your armrest. There was no way they reassembled my car in two hours. It was already finished, and probably for days.
]I owned a Dodge Daytona back in the 90's that threw a rod after six months They kept the car for weeks. Instead of putting in a new short block, they ordered every single component to rebuild the motor. When we got to day 27, I told them I was invoking the lemon law to get a new car. The next day they said the motor was put back together, but my clutch was worn out. They would replace it for $250. I told them that was bull, and would be there in two hours to see the clutch myself. When I get there, my car was all put together and ready for pickup. They claimed they re-looked at the clutch and it was ok.
This was their ploy to make some money on a warranty repair, the same with your armrest. There was no way they reassembled my car in two hours. It was already finished, and probably for days.
09-18-2018, 04:28 PM
#39
Drifting
[QUOTE=ByRiver;1598006500]
WOW !
The first incident they were accommodating. They gave me a new loaner Silverado for over two weeks while everything was going on. But personally I think its the service manager who is the problem. He has had an attitude with me since I told him I wasn't going to pay for my armrest that was ordered while everything was still under warranty. It's not my fault that they failed to tell me that they ordered the part. But yes, after this incident I will most definitely not be going back, I'll be driving over an hour to a different dealership.[/QUOTE
]I owned a Dodge Daytona back in the 90's that threw a rod after six months They kept the car for weeks. Instead of putting in a new short block, they ordered every single component to rebuild the motor. When we got to day 27, I told them I was invoking the lemon law to get a new car. The next day they said the motor was put back together, but my clutch was worn out. They would replace it for $250. I told them that was bull, and would be there in two hours to see the clutch myself. When I get there, my car was all put together and ready for pickup. They claimed they re-looked at the clutch and it was ok.
This was their ploy to make some money on a warranty repair, the same with your armrest. There was no way they reassembled my car in two hours. It was already finished, and probably for days.
]I owned a Dodge Daytona back in the 90's that threw a rod after six months They kept the car for weeks. Instead of putting in a new short block, they ordered every single component to rebuild the motor. When we got to day 27, I told them I was invoking the lemon law to get a new car. The next day they said the motor was put back together, but my clutch was worn out. They would replace it for $250. I told them that was bull, and would be there in two hours to see the clutch myself. When I get there, my car was all put together and ready for pickup. They claimed they re-looked at the clutch and it was ok.
This was their ploy to make some money on a warranty repair, the same with your armrest. There was no way they reassembled my car in two hours. It was already finished, and probably for days.
09-18-2018, 06:42 PM
#40
Really? "One too any gears" would dissuade you? So don't use seventh. It only .09 difference from sixth anyway. It's the smoothest manual I have ever driven, a real delight. I use seventh all the time on fast freeways. It probably makes little difference mpg wise, but I like having it there. To NOT buy an M7 because it has one more gear just seems nonsensical to me. Better grab it while you can because it just might not be there very much longer.
The M7 makes the C7, THE must have Corvette.
Some are not capable of driving a manual transmission - but that's their "personal
issue".......
