Had all I can stand, trading this POS
07-13-2017, 04:29 PM
#121
Le Mans Master
07-13-2017, 04:42 PM
#122
Melting Slicks
[QUOTE=NSC5;1595133248]Programming seems to be a major issue with some of the current GM automatics. The 8L90 in my Z06 is rarely in auto mode because I won't let it go into V4 mode so only when I have the Range module plugged is it in auto. But when it is in auto it shifts flawlessly. In Corvettes the major problem seems to be shudder related to V4 mode and the overworked converter clutch but its nearly identical lower torque little brother (8L45) used in several Cadillac models seems to suffer from rough and unpredictable shift behavior often choosing an unreasonable gear or stuttering as to which it should choose which is programming and not the basic transmission.
Between what I have seen of poor programming of the 8L45 series and the stupid modulated clutch operation during V4 mode (another programming choice) with the 8L90 I believe the 8L could be vying for the title of Windows 10 of the transmission world. This is a shame because the basic 8L series transmission is very well built but it is being literally destroyed in the Corvette by poor programming choices and the enjoyment of it is being destroyed in other models by clunky programming.
I totally agree must issues with the 8l90 are ralated to poor programing, one of my sons is a GM tuner and completely loves the A8s he admires these transmissions in the C7Z like no other he just loves them cause he can make them do whatever he wants them to do.
Between what I have seen of poor programming of the 8L45 series and the stupid modulated clutch operation during V4 mode (another programming choice) with the 8L90 I believe the 8L could be vying for the title of Windows 10 of the transmission world. This is a shame because the basic 8L series transmission is very well built but it is being literally destroyed in the Corvette by poor programming choices and the enjoyment of it is being destroyed in other models by clunky programming.
I totally agree must issues with the 8l90 are ralated to poor programing, one of my sons is a GM tuner and completely loves the A8s he admires these transmissions in the C7Z like no other he just loves them cause he can make them do whatever he wants them to do.
07-13-2017, 06:26 PM
#123
funny you should ask ..in 1980 I bought a brand new corolla...had to wait in line to get one....the service manager told me that the car will go forever...until ya wreck it ...well he was correct..drove the heck out it ..8 years never a single problem ..brakes ..tires ..thats it ....
you may want to get one as a rental when your C7 is in the shop for repairs
you may want to get one as a rental when your C7 is in the shop for repairs
07-13-2017, 07:06 PM
#124
Drifting
Then we get to all the other transmission problems and the difficulty in dealing with them because Of GM. My dealer is great. I wish they sold other brands because I'd love to keep them.
And just FYI, I've owned a number of Vettes, a C4, C5, and C6, plus a Camaro and Firebird, I loved all of them. But this is the "new" GM, which is technically not even the same company that made those previous cars, and their behavior is just unacceptable.
So hey, if GM is OK with their only customers being the lemmings that defend them no matter what crap they produce or how they treat their customers, then I guess they'll find out how many of those people there are. Might be a lot since this country can support two political parties with that same attitude. Just won't be me.
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07-13-2017, 07:46 PM
#126
Should have bought a Ferrari, awesome DCT in the 488....(see how silly that is?)
Trolls don't do that.
Trolls don't do that.
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07-13-2017, 07:57 PM
#127
Le Mans Master
funny you should ask ..in 1980 I bought a brand new corolla...had to wait in line to get one....the service manager told me that the car will go forever...until ya wreck it ...well he was correct..drove the heck out it ..8 years never a single problem ..brakes ..tires ..thats it ....
you may want to get one as a rental when your C7 is in the shop for repairs
you may want to get one as a rental when your C7 is in the shop for repairs
But hey, whatever floats your boat. I prefer to drive a car with a soul and not an appliance.
07-13-2017, 08:09 PM
#129
Advanced
After 10 completely trouble-free years with my C6 convertible (and I mean 100% trouble free), I was deciding whether or not to shop the numerous 2017 C7s available at the larger retailers or order a 2018. As I began to research the newest versions of the C7, the dreaded A8 tranny issues appeared here, there and everywhere. My thoughts went back to my first glimpse of the 2014 C7 in person, and my interest was especially piqued by the introduction of the Premiere Edition convertible - loaded with about every option GM could cram into it (just the way I like 'em), and in the same color combination as my first brand-new LT-1 convertible in 1972, dark green with a brown interior. As I thought about the facts that (1) This was a limited-edition car (550 produced), (2) It featured an engine referred to once again as an LT-1, and (3) It was equipped with the A6 transmission, not the troublesome A8 . . . it became clear what I really wanted to do.
It took a bit of searching, but I turned up a practically new (5000 miles) C7 Premiere Edition located close enough to make an in-person inspection possible. So that's what's in my garage now, next to my 1962 300 hp/4-speed which fulfills my need for clutch-pedal enhanced driving enjoyment. I think I may have not only gotten the exact car of my dreams - but may have dodged a potential bullet in the process. I'm very sorry to hear of the OP's troubles with his A8, I expect I would be just as upset and disappointed as he is. Time for GM to step up on this issue, don't you think? Just my opinion, of course.
As for me . . . I couldn't be happier.
It took a bit of searching, but I turned up a practically new (5000 miles) C7 Premiere Edition located close enough to make an in-person inspection possible. So that's what's in my garage now, next to my 1962 300 hp/4-speed which fulfills my need for clutch-pedal enhanced driving enjoyment. I think I may have not only gotten the exact car of my dreams - but may have dodged a potential bullet in the process. I'm very sorry to hear of the OP's troubles with his A8, I expect I would be just as upset and disappointed as he is. Time for GM to step up on this issue, don't you think? Just my opinion, of course.
As for me . . . I couldn't be happier.
07-13-2017, 08:25 PM
#130
Melting Slicks
Member Since: Jun 2004
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St. Jude Donor '05-'06-'07-'08-'09-'10,'13-'14-'15-'16-'17-'18-'19-'20-'21-'22-'23-'24
GM definitely needs to up their customer service game, especially with their top vehicle. I have a 17 Challenger SRT 392 that needed a new differential (wrong fluid installed at factory) and a new uconnect head unit within the first 500 miles. I contacted the Dodge SRT customer service and was called every other day during the repair process. The head unit caused my car to stay at the dealership for 17 days. It has since been replaced, works great, and I received a check in the mail $750 for my inconvenience. GM should take note of this and start taking care of its Corvette owners when problems appear.
Last edited by golddog; 07-13-2017 at 08:26 PM.
07-13-2017, 09:08 PM
#131
Don't let the door hit ya where the Good Lord split ya!
i am coming from BMW - 550i with dreaded N63 'customer care campaign'. Then went M5 that drank a quart every 800-900 miles - 'normal'. Best stereos on the planet and insane turbo boost but still issues.
Tradeoffs. Physics. Mechanics. Human engineered and built.
Sell it and move on. Probably best all-around car out there is the 911. It, too, can have its own issues
Best bang for the buck - Corvette without question.
i am coming from BMW - 550i with dreaded N63 'customer care campaign'. Then went M5 that drank a quart every 800-900 miles - 'normal'. Best stereos on the planet and insane turbo boost but still issues.
Tradeoffs. Physics. Mechanics. Human engineered and built.
Sell it and move on. Probably best all-around car out there is the 911. It, too, can have its own issues
Best bang for the buck - Corvette without question.
07-13-2017, 09:13 PM
#132
Race Director
If the man bought a car, had too many problems with it to justify keeping it, why on Gods green earth would any of you care? Because you own the same particular car and feel insulted that he didn't like having a car that gave him problems? Jesus people, grow up. It's a freaken car.
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07-13-2017, 10:01 PM
#133
Burning Brakes
^^It's the internet. It's not supposed to make sense (as far as I can tell).
07-13-2017, 10:12 PM
#134
Melting Slicks
Member Since: Aug 2016
Location: MOUNTAIN HOME Arkansas
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GM definitely needs to up their customer service game, especially with their top vehicle. I have a 17 Challenger SRT 392 that needed a new differential (wrong fluid installed at factory) and a new uconnect head unit within the first 500 miles. I contacted the Dodge SRT customer service and was called every other day during the repair process. The head unit caused my car to stay at the dealership for 17 days. It has since been replaced, works great, and I received a check in the mail $750 for my inconvenience. GM should take note of this and start taking care of its Corvette owners when problems appear.
07-13-2017, 10:15 PM
#135
Safety Car
Member Since: Feb 2016
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If the man bought a car, had too many problems with it to justify keeping it, why on Gods green earth would any of you care? Because you own the same particular car and feel insulted that he didn't like having a car that gave him problems? Jesus people, grow up. It's a freaken car.
07-13-2017, 10:27 PM
#136
Le Mans Master
07-14-2017, 09:01 AM
#138
Le Mans Master
07-14-2017, 09:30 AM
#139
Team Owner
3 transmission replacements is ridiculous by any standard. You got a lemon for sure. I can't speak to other GM cars since this is my first.
If you are done with GM for good, as I am with LandRover (similar story as yours), go get a Porsche. The lemon ration (they do have them) is far lower than with GM.
If you are done with GM for good, as I am with LandRover (similar story as yours), go get a Porsche. The lemon ration (they do have them) is far lower than with GM.
07-14-2017, 10:31 AM
#140
Melting Slicks
Member Since: Jul 2014
Location: Bonita Springs Florida
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After 2 months of dealing with this C7, its clear that being a GM owner is just not for me. The transmission has been pulled from the car 3 times now, and the issues are still not resolved.
I'm just over it. The only possible reason to spend this kind of money on a sports car is if you enjoy it. Even if it was fixed today, the experience has completely eroded any kind of enjoyment that I was hoping to get from owning a Corvette.
It's just not a viable car to own long-term, and I would not consider owning a GM car at this point under any circumstance. Just look at the other transmission failures across the rest of their product lines...
A big F-YOU also to Classic Chevrolet in Sugarland, TX for throwing up their hands. The tech even confirmed that the engine is still running so rough that its triggering the knock sensor, but they just aren't going to do anything about it.
Just throwing this out there before I deactivate my account here, just in case I can possibly save one person from the terrible mistake I made by assuming that a C7 Corvette is a viable vehicle to actually drive further than 10,000mi without its drivetrain imploding.
Queue the GM apologists replying, telling me how ridiculous I am, and how their car is super-great. Out of 3 people I know with C7's, now all 3 of us have had transmission replacements. You can't tell me that's an anomaly.
It's just not a well built car. It doesn't get much simpler than that.
I'm just over it. The only possible reason to spend this kind of money on a sports car is if you enjoy it. Even if it was fixed today, the experience has completely eroded any kind of enjoyment that I was hoping to get from owning a Corvette.
It's just not a viable car to own long-term, and I would not consider owning a GM car at this point under any circumstance. Just look at the other transmission failures across the rest of their product lines...
A big F-YOU also to Classic Chevrolet in Sugarland, TX for throwing up their hands. The tech even confirmed that the engine is still running so rough that its triggering the knock sensor, but they just aren't going to do anything about it.
Just throwing this out there before I deactivate my account here, just in case I can possibly save one person from the terrible mistake I made by assuming that a C7 Corvette is a viable vehicle to actually drive further than 10,000mi without its drivetrain imploding.
Queue the GM apologists replying, telling me how ridiculous I am, and how their car is super-great. Out of 3 people I know with C7's, now all 3 of us have had transmission replacements. You can't tell me that's an anomaly.
It's just not a well built car. It doesn't get much simpler than that.
Sell it, trade it and get something that will make you happy. :Life is way too short to have it ruined by a piece of machinery.
While the C7 is a great car in many respects, the A8 is problematic across their product line. W/O a complete redesign (or a return to the A6), we are stuck with it until the next model.