Automatic C7 Trans Overheating on track
Burning Brakes
Joined: Aug 2016
Posts: 793
Likes: 142
From: Texas
Yes, I overheated the trans there too.
Having said that, the track layout we were using was obviously less stressful on the transmission than the track I normally run. Plus, the way the class is run, even with the fastest group we weren't really starting to push things until the second half of the second day, so most people are not really stressing the cars at all. They also mentioned something about a minor mod to give the transmission more air, but I don't know the details.
Having said that, the track layout we were using was obviously less stressful on the transmission than the track I normally run. Plus, the way the class is run, even with the fastest group we weren't really starting to push things until the second half of the second day, so most people are not really stressing the cars at all. They also mentioned something about a minor mod to give the transmission more air, but I don't know the details.
Burning Brakes
Joined: Aug 2016
Posts: 793
Likes: 142
From: Texas
Burning Brakes
Joined: Aug 2016
Posts: 793
Likes: 142
From: Texas
In the An optional cooling pack for C7 (track use or other) post on the Ask Tadge forum he says "...For example, the front-mounted supplemental trans cooler developed for the Z06 automatic will be included in the Z51 package for automatic coupes starting in the 2016 model year." Later he adds"...but we will make every effort to make sure that the changes are backwards-compatible to vehicles already produced."
Last edited by 911Hunter; Oct 13, 2017 at 07:29 AM.
Burning Brakes
Joined: Aug 2016
Posts: 793
Likes: 142
From: Texas
I went to Sebring on Saturday and Sunday. I figured I would give you guys an update on how the car performed. There were 3 hours of track time each day with a 30 minute warm up. The transmission was fine for the 30 minute warm up but then overheated 90 minutes later about 20 minutes into my first 30 minute track session. I was by all means not pushing the car hard as I was unfamiliar with the track. The exhaust wrap seemed to help a bit. The transmission lasted the whole 30 minute track session when I manually shifted but trans temps were hovering around 260. I didn't finish the last 90 minutes of track time on Saturday as the car was beeping non stop after the DIC transmission overheat message came on. I cooled down the car, let it sit for 20 minutes off and even tried restarting the car 7 times to see if the beeping would stop, temp was around 180. Finally about an hour into my drive home, I stopped to get a bite to eat and forgot to fasten my seatbelt when I left. Oddly enough, once the seatbelt chime/DIC message popped up and I fastened my seatbelt, the beeping stopped.
Today I went to the dealer and they pulled all the parts required to mount the front end Z06 cooler on my car. All in all, the parts are going to cost around $1k for the radiator and lines. I'm waiting on the tech to call me back with the cost to install. I also contacted GM technical support to see if they can cover it under warranty. We'll see what happens.
Today I went to the dealer and they pulled all the parts required to mount the front end Z06 cooler on my car. All in all, the parts are going to cost around $1k for the radiator and lines. I'm waiting on the tech to call me back with the cost to install. I also contacted GM technical support to see if they can cover it under warranty. We'll see what happens.
Did it work better? Was it covered by GM's warranty?
Burning Brakes
Joined: Aug 2016
Posts: 793
Likes: 142
From: Texas
I just finished talking to GM Customer service. They told me to get a secondary cooler installed at the dealer at my own risk and cost. I don't think they even know what I am talking about it. They said unless the issue is a recall, they will not cover it.
The dealer told me that its impossible to know if this would work or not. They are also worry that programming might be needed for temperature sensors. They recommended that I trade in my 2015 for a 2016 which would have a secondary cooler. I will not do.
If its not too much trouble, Would you mind posting/PM what part numbers are need for the secondary cooler?
The dealer told me that its impossible to know if this would work or not. They are also worry that programming might be needed for temperature sensors. They recommended that I trade in my 2015 for a 2016 which would have a secondary cooler. I will not do.
If its not too much trouble, Would you mind posting/PM what part numbers are need for the secondary cooler?
Burning Brakes
Joined: Aug 2016
Posts: 793
Likes: 142
From: Texas
I reported that my AFM actuators failed last June on my first day on track. Also that the manager of the Ron Fellows school confirmed they were having the same issue when cars were driven hard by the instructors, and that GM knew about the issue. I had mine replaced last year and dealer told me they did not have an upgraded part at that time. Too bad that they have come up with a new part that still fails. What was GM thinking when they called these the Most track capable corvette ever. Are they incompetent or stupid thinking these issues would not show up in customer cars?
Safety Car
Joined: Aug 2012
Posts: 3,960
Likes: 1,106
Running the required lines for the front cooler won't be a fun, fast, or cheap task.
When the Z06 was introduced most of the after-market side skirt manufacturers cautioned in their instructions to use caution when installing the driver's side skirt to avoid drilling into the cooler lines that lie just above the rocker panel because repair/replacement would be very expensive and difficult.
When the Z06 was introduced most of the after-market side skirt manufacturers cautioned in their instructions to use caution when installing the driver's side skirt to avoid drilling into the cooler lines that lie just above the rocker panel because repair/replacement would be very expensive and difficult.
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Burning Brakes
Joined: Aug 2016
Posts: 793
Likes: 142
From: Texas
I'm very disappointed after taking my A6 '14 Stingray Z51 to my local PCA track for DE, I thought that my Stingray that was track ready with the Z51 package was going to beat or at least give a strong competition to the other sport cars there. The Stingray Z51 was not able to finish any of the 3 trial courses that I drive, it did not mater if I went in full auto or paddle shift, sport or competition mode, even that the transmission shifted greatly always I unfinished the course because my transmission overheated in less than 5 minutes of tracking the way the car was supposed to perform, it was a full day event at just 83 F and I left at half day very embarrassed and worried if my car could have a major failure if I continued there. Shame on GM of selling a supposed Z51 track ready automatic that is not well equiped with sufficient transmission cooling for the track. The car looks great, has great handling, strong engine, great transmission, just the transmission cooling is a big joke and very embarrassing that it was the only car that did not finished, even embarrassed by a couple of Honda Civics that were doing better. And then GM does not give a solution to us or allow us to upgrade that cooling issue, letting us know that we could lose or Powertrain warranty if we do an upgrade on our own, this is a complete B.S.
I have went to the track with a Porsche 911 and '11 Mustang GT 5.0 even on hotter weather and never had a shameful experience like this.
I have went to the track with a Porsche 911 and '11 Mustang GT 5.0 even on hotter weather and never had a shameful experience like this.
Last edited by 911Hunter; Nov 24, 2017 at 08:23 AM.
Instructor
Joined: Oct 2014
Posts: 146
Likes: 25
From: Louisiana
Last edited by ap6954; Jan 16, 2019 at 08:08 PM.
Instructor
Joined: Oct 2014
Posts: 146
Likes: 25
From: Louisiana
https://www.corvetteforum.com/forums...oling-kit.html
Go to the above thread and read though it. All the info you need about adding the aux trans cooler to a 2015 A8. Three of us have done the install like the original poster, Bill did. Cost? I think $1400 in parts. We each did it all ourselves so the labor was “free”. I can’t remember how long it took. I think it’s documented in the thread somewhere. Can you do it cheaper? Probably by using braided line and installing it so you don’t have to disassemble the whole driver side of the car to run the tubing but we all wanted OEM look and parts.
Premium Supporting Vendor
Joined: Sep 2017
Posts: 1,457
Likes: 657
From: DFW Texas
https://www.corvetteforum.com/forums...oling-kit.html
Go to the above thread and read though it. All the info you need about adding the aux trans cooler to a 2015 A8. Three of us have done the install like the original poster, Bill did. Cost? I think $1400 in parts. We each did it all ourselves so the labor was “free”. I can’t remember how long it took. I think it’s documented in the thread somewhere. Can you do it cheaper? Probably by using braided line and installing it so you don’t have to disassemble the whole driver side of the car to run the tubing but we all wanted OEM look and parts.
