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There's been a couple good threads on just this subject, which I found after throwing the same code this week in my 2016 Z06. My check engine light went out after two days of driving.
If you look up these codes (I threw P0700 and then P0711), it could be low transmission fluid, a sensor, a harness (discussed in the thread below), etc.
It's caused by a short in the tempature sensor wires located in the harness inside the transmission , if you look at your trans temperature it will be barely over 100 degrees. There is a TSB that recommends replacing the two harnesses inside the trans but I only replaced the lower one that has the tempature thermistor . The upper harness replacement required you to remove the valve body . I did the work myself after getting a crazy quote from the dealer to fix it . The harness was 79.00 along with 65 bucks worth of fluid . It took me 3 hours to do . it won't hurt anything if you leave it alone but I got tired of seeing the CEL light pop on
Dave
There's been a couple good threads on just this subject, which I found after throwing the same code this week in my 2016 Z06. My check engine light went out after two days of driving. If you look up these codes (I threw P0700 and then P0711), it could be low transmission fluid, a sensor,
The CEL will pop back on . Dave
Code reads that its in regards to Transmission Fluid Temperature Sensor A performance
Transmission Fluid Tempature sensor A circuit range / performance
Secondary DTCs
So i have a bad temp sensor ? How much does it cost to fix it ?
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This is certainly not what we like to hear, Juju2002. Please know, customer satisfaction is extremely important to us. Our team would be more than happy to take a closer look into the concerns with your vehicle. To do so, please send an email to socialmedia@gm.com with ATTN: Juju2002/Corvette Forums in the subject line. Please include your contact information, VIN, a brief description of your concern, and the name of your preferred dealership. We look forward to hearing from you. To learn more about GM’s Privacy Policy, please visit https://www.gm.com/privacy-statement.html. The information you provide may be monitored and recorded and is subject to the GM Privacy Statement. Privacy Statement | General MotorsYour privacy is important to General Motors. This Privacy Statement addresses the personal information GM collects and how GM handles that personal information.www.gm.com
Can you tell us what you can do about it , most are out of warranty and it's an electrical problem that there is a TSB published for it but like any other known problem GM does not take responsibility .
Just look at the transmission Shudder issues ,known problem but if you are out of warranty you are expected to pay
I certainty did not ever think , along with many others, that I would need to replace an internal harness at a cost of over $700 dollars or be expected to pay for a TRIPLE FLUSH
I get that GM warranties the drive train for 4 years but with a known problem like Shudder or this harness issue ..... there should be an extended warranty offered for these type of issues
At 63,000 mile my daughter's 2010 Nissian Altima's CVT transmission blew up , Nissan , knowing they had a problem , had extended the warranty on these transmissions to 10 years 120,000 miles , Nissan towed the car and replaced the trans for free
This is the action that GM should be taking with the issues with the A8 transmission
Dave
PS I bet we wont get a response to this
Can anyone provide the schematics or a picture of the location of where the Transmission temperature sensor is located? I know ithe transmission fluid pan must be removed and apparently it is located somewhere in there. This would be for the 2016 C7 Stingray Automatic Corvette.
Can anyone provide the schematics or a picture of the location of where the Transmission temperature sensor is located? I know ithe transmission fluid pan must be removed and apparently it is located somewhere in there. This would be for the 2016 C7 Stingray Automatic Corvette.
Can anyone provide the schematics or a picture of the location of where the Transmission temperature sensor is located? I know ithe transmission fluid pan must be removed and apparently it is located somewhere in there. This would be for the 2016 C7 Stingray Automatic Corvette.
Can you point to it with an arrow? my mechanic couldn't locate it after he took the transmission fluid pan off.
There is nothing to circle, the reason why you are popping the code is because the lower wiring harness has a short in it, replace the harness and button it back up, you will be fine
Just click on my link I posted above, and it will tell you everything you need to know plus the part number. I even posted a video in the link ( its not me but )
Follow my directions closely as the new harness has different color codes that the original
GM replaces both the upper and the lower harness, but the upper harness requires removal of the valve body. I can tell you with a 96% certainty that the short is in your lower harness.
Dave, just to be clear my engine light came on and then I got a code but mine said Transmission temperature sensor. So I went and ordered the sensor. My mechanic (who doesn't specialize in corvettes) figured it would be an easy fix if it's just a sensor. We couldn't find any information on the internet to provide the location of the transmission temperature sensor.
Based on your experience you believe it to be a short in the harness and not the sensor, is this correct? Lastly, do you know where the transmission temperature sensor is located?
Dave, just to be clear my engine light came on and then I got a code but mine said Transmission temperature sensor. So I went and ordered the sensor. My mechanic (who doesn't specialize in corvettes) figured it would be an easy fix if it's just a sensor. We couldn't find any information on the internet to provide the location of the transmission temperature sensor.
Based on your experience you believe it to be a short in the harness and not the sensor, is this correct? Lastly, do you know where the transmission temperature sensor is located?
Thanks
Duvall I don't know what sensor you bought as there are many
if u popped a P700 and a secondary P711 CODE temp sensor out of range then u don't need a sensor, u need a harness ....
GM has a TSB for this problem as we are not the only people that have this problem as it is pretty widespread
Dave
Wow, all these A8 transmission horror stories. If it's not one thing it's another. Man am I glad I bought a M7.
No they are no worse than any of the previous versions , u just have never paid attention ...
C6 and the A4 all suffered problems as well as the manual transmissions
And remember the A8 is not just in the Corvette, it's in 100 of thousands other GM vehicles.... you only hear from people who have problems .....
Tell me , how are your synchronizers after a few missed shifts?
Every transmission has its issues sooner or latter, you do know it is man made and can fail.
Hmm... I don't know never had a missed shift and my synchros are fine. Now your going to makes excuses while abusing a car when it breaks?
Originally Posted by Dcasole
No they are no worse than any of the previous versions , u just have never paid attention ...
C6 and the A4 all suffered problems as well as the manual transmissions
And remember the A8 is not just in the Corvette, it's in 100 of thousands other GM vehicles.... you only hear from people who have problems .....
Originally Posted by Dcasole
Just because you have an M7 with no problems you think all M7's are trouble free lol lol lol 😆
Ok so the bitter ones who have had problems come back with M7 stories, I don't recall any out of the ordinary M7 or M6 stories on this forum yet the A8 stories are constant whatever car they are in. Suck it up, the A8 was/is a horrible tranny.
Hmm... I don't know never had a missed shift and my synchros are fine. Now your going to makes excuses while abusing a car when it breaks?
Ok so the bitter ones who have had problems come back with M7 stories, I don't recall any out of the ordinary M7 or M6 stories on this forum yet the A8 stories are constant whatever car they are in. Suck it up, the A8 was/is a horrible tranny.
You are just not looking hard enough for M7 and M6 problems .....
You are entiled to your opnion .... lol
A8 is horrible.. its the only stock transmission that can handle the abuse of a built 650 to 750 HP motor ...
Drop the clutch a few times at 4 grand and tell me how it works out for u lol .Thats not abuse for a corvette
Were there shudder issues ... sure but the TCM update that changes the way the lock converter engages and new fluid fixed them .
Some converters were to far gone by this time but dealers refused to replace ....
Those that still experienced issues ... these are caused my dealers that are quick to just throw a flush at a shudder complaint . Then the owner bashes the transmission when it was never the trans casuing the shudder in the first place . That's why GM wanted them all to do a PICO test as anything that rotates can mimic shudder including a bent rim or bad tire balance
Half the problem was caused by dealers who had no idea how to fix them.
Want to really make any A8 bomb proof .... tune the TCM and stop the lock up clutch from engaging in lower gears...
Enjoy your M7 ... I am sure its great ... but so is my A8 that's behind a procharged LT1 ....
Code P0711 help
