Hi All, I need a recommendation where I can get a transmission triple flush for my 2015 vette A8. I live in North Fort Lauderdale, Florida. I called one dealer and The service advisor told me they don’t do triple flush as this damages the transmission. I told them when I cold start my car let idle down and put in drive it jerks hard and some shudder when driving. So I called another dealer and will have it done there but they want $1100. Is a triple flush really needed? Looking for a very Reliable shop where I can always take my vette to. Thanks!!

 

Stop talking to the clerk and start talking to the guy doing the job. I use the SA to book an appointment. I would say to ask around if they have a Corvette certified tech. Probably 1 or 2. Go down and talk to that guy. The SA is there to book your appointment with that guy. You don't ask the receptionist technical questions when you are getting surgery so don't talk to the SA. That he told you the flush damages the transmission means he doesn't know that GM has authorized this flush. So either GM is wrong or this guy is. Guess who I think is wrong. I did an module update "while I was there getting a coolant flush. Told him NO TCM OR ECM updates since I have a Diablo unit with a tune over the phone. Must have done something wrong since the tech tried to contact me and I missed the call. Later on, he said there were 3 modules to do. One of them was the TCM and he'd do 2 and give me the 3rd free. Thanked him and reiterated NO TCM. He said that the paperwork would show the TCM was done but it wasn't. Later on, being the trusting soul I am, I talked to the tech who apologized for the TCM. Sure, I got Diablew to fix it right but I now the SA is a liar. Tech was honest so I will use that dealership BUT will never trust that idiot and will avoid him by using another SA to BOOK THE APPOINTMENT ONLY.

Do yourself a favor and stop talking about the quote. That is meaningless at best and misleading at worst. $1100 is an answer. My math teachers use to teach me "No working, no credit". How did you come out with $1100. Show the working. GM warranty pays 2.8 hours and 24 quarts of fluid. You probably will be charged a bit more than 2.8 hours. Here is how the math works out.

(Hourly Rate X 2.8) + (Cost of fluid at parts counter X 24) + misc shop charges + taxes. That will prevent you from getting scammed with a pan drop only and giving you a low price.

AFAIK, the fluid is too hygroscopic for the A8 so they are looking to drop the pan, fill it up, running it to temp, drop the pan, fill it up, run to temp, drop the pan, fill it up, etc. This is to get as much of the "hand me down" fluid from the A6 out and replace it with the right fluid for the A8. Time and materials basically. If you don't know that, you got no clue if he is ripping you off or not. Once you see the data, feel free to watch from afar to verify. Get to know the tech and use the SA to make the appointment WITH THAT TECH ONLY.

 

I was quoted $1000 at Fremont Chevrolet about a week ago for the triple flush although my car still has no signs of shudder.

 

New to the C7's, and not trying to hack the OP thread.

I have "7-Speed Manual Transmission with Active Rev Matching with Z51 Performance Ratio" on the window sheet, then it has 8 - Speed Paddle Shift Automatic also . I know it's an automatic. Car has 9000 KM (5500 M) on it. This triple flush, is something never heard of till this site.

Sound like something I should look at ?

 

You can wait for the shudder before you do it. Fluid picks up moisture till it does shudder. Damage might be done in the meantime. Your call

 

You have BOTH auto and manual transmission in one car?

 

No, that's just what is indicated on the window sheet that came with the car, not sure why says both, but it's an automatic to clarify. Under the mechanical features indicates "manual" , maybe I'm missing something.

 

Auto was the option the original buyer selected for $1000 more.

I would get it done before I get shudders. It's going to pick up moisture and feel fine till it does not. I'd rather have the hygroscopic fluid out before we get to the point of shudder since damage might be going on till it shudders. Why wait?

 

Out of curiosity, why did they put that fluid in ?

 

If I had to guess, I would say that it is similar to what Ford did with the Powerstroke motors in the 90s to mid 2000s. They used the green stuff and had you add additive to pull the coolant up to barely spec when they could have used a more robust coolant that International, which supplies the engine and uses it on their own trucks uses. They don't want to get the dealer to stock a new coolant so the barely able stuff was used and you had to dump an additive in every 15K. IIRC, the fluid that came with the car was the same one the A6 uses from the C6 all the way to the 2014 C7. Regardless, customers found that the fluid wasn't the greatest once it picks up enough moisture to show a problem. By the time it gets to the point where it does show a problem, could something have been damaged? IDK but why not just switch it out today before that point? People have reported that the flush fixes the shudder IF you caught it in time. What are you trying to achieve by waiting would be my question.

 

My problem is the local Chevy dealers service centers. Reviews say stay away. My my mom and pop place I take my other cars don’t do triple flush and really don’t work on vettes. I’m looking for a top notch reliable mechanic to do the work and take care of my car when needing service.

 

MYFIRSTVETTE - Attached is the GM TSB addressing the A8 shudder issue for background. Also attached is a quick C7 maintenance guide that I found. Additionally, next trip to your GM dealer, ask them for a GMVIS printout. This will list all of the previous maintenance done to your Vette. Good luck.

 

Do the reviews mention a specific tech? People love to say a dealership is good or bad but don't often reference a specific guy. That means when you drop your car off, it's "luck of the draw". You might get the bad guy today if your luck is out. Find out the Corvette certified tech and interview him.

 

Hmmm. Since I will need this done eventually, I will get this out of the way this summer. Thanks.

 

Just noticed this issue, so trying to be proactive on the issue - think I'm doing the right thing asking .That's what forums are for....

Not trying to achieve anything by waiting. Sorry you're thinking otherwise.

Have a good one.

 

I'm not thinking anything. Just wondering, as I said, what you are trying to achieve, as asked. For example, if you are planning to sell the car in the next year, probably forget about spending the money. You probably won't get anything more at sale time. If you are 70 and want to keep it for 5 more years, do the job.

 

You should check to see if it was already done first. The GM dealer can run a report showing the history of everything done at their dealerships.

 

Not every dealer has the machine to do the triple flush. If they are doing three flushes without the machine I'd be concerned.

 

The 'machine' is only used to pump new Mobil 1 Blue label fluid back into the drained trans. Nothing else.

The adaptor plate that the fluid exchange machine uses won't fit on the C7's trans due to limited space, so they just drop the pan 3X, 8 quarts each time. Run engine, shift gears, wash, rinse, repeat.

It is all spelled out in the TSB at the bottom of the article under the Corvette section.

 

Did triple flush on my 2019 GS... well worth it. The car drives great now. Shifts are quicker and much smoother. I strongly recommend it.