Have read many posts about the flaring with the A6 Transmission. Many ideas about a fix. My car is a 2008 with the A6 transmission. A few times it flares (searches) on 2nd to 3rd gear changes. Never with aggressive shifts, always seems to be with light pressure on the accelerator. I have had the latest updates downloaded for the transmission. I have read that an update for the transmission just changes certain sectors in the transmission program. Is the following worth trying or just a waste of time? Have the TCM reprogrammed as if it was just installed into the car, NEW. And also reset the "fast learn data" so the transmission will "re-learn" everything as if it was a new car? After that, drive the car more aggressively so it will learn better shift times and pressures? I know there are lots of variables, but would this be worth trying to solve the issue? Thanks for any help with this..........

 

Had the same thing with my car ...thought i was going nuts could not figure it out

Had my car to the dealer for an unrelated item and asked them if they ever heard of "shift flair" the mechanic working on the car started to laugh......

Had the dealer do the TCM fast learn and it's been fine ever since .... the mechanic and the service advisor both said it will be back if you dont drive it hard , just an absolute stuipd design feature and its not just corvettes , it's all GM 's cars and trucks equipped with the A6 ....

I am going to be out of warranty soon so I got a knock off Tech II, I can reset it myself now in 5 min

Dave

 

Did they reset the TCM back to new condition also, or just reset the quick learn data? Did you have the latest update downloaded for your transmission? Where did you buy your programmer, what brand? Thank you. Appreciate it........

 

You just need to reset the adapts. Can be done with HP Tuners also.

 

Where did you get your tuner? Brand? Are there three resets to be done? Fast adapt reset, adapt reset, and adapt preset? Or does just a "fast adapt reset" reset everything? Because it solved your issue, just want to try and duplicate it for a good result. Thank you.

 

they did both ......they told me I already had the latest software downloaded .

I bought my programmer off a friend , I think he got it off of Amazon or ebay , I will find out

Dave

 

I am not sure about the reset u are talking about , remember I had my dealer do it, they told me they checked the software , did the fast reset .......

 

GM Says its normal, but it is a PIA and I sure don't think it's normal, but what do I know?? Resetting will make it go away for awhile.

http://www.corvetteactioncenter.com/...2016-1316.html

Service Procedure:

At this time this flare condition has been recognized in two different driving conditions:

During the first 2-3 upshift after the vehicle has been sitting, engine off for several hours. This condition may be caused by air that is trapped in the 3-5-R clutch assembly.

When the first 2-3 upshift is made this trapped air is purged and the following 2-3 shifts will be normal with no flare.

When diagnosing this condition a garage shift into reverse before drive will purge this air and prevent the 2-3 flare from occurring. This condition is a NORMAL characteristic of the transmission, it will not cause durability concerns and no repair attempts should be made.
When transmission ATF temperature is at or below 85 degrees F (30 degrees C). This 2-3 upshift flare can occur until the ATF temperature warms. If the 2-3 flare is determined to be ATF temperature sensitive use a Tech 2 to make note of the throttle position when the flare occurs. Drive the vehicle to get ATF temperature to at least 104 degrees F (40 degrees C) and then make several 2-3 shifts at the throttle position determined to be the most sensitive to the 2-3 flare. This will allow the transmission adapts to tailor the shifts and may help to eliminate the cold 2-3 flare. This condition is a NORMAL characteristic of the transmission, it will not cause durability concerns and no repair attempts should be made.

Notice: A revised TCM calibration has been released and is available on TIS2WEB to improve this concern in 2007 vehicles equipped with the 6L90 RPO MYD automatic transmission

 

Good info .... mine was also doing it on the 1st 2nd shift also . When I asked they said that the reset cures this also . It was explained to me that the TCM monitors the speed and will only apply enough pressure to the clutch packs to engage . After a period of time this new line pressure becomes the norm. When you go just above this point that it established is when you get the slippage or flair , any higher or any lower and the TCM will shift fine . I thought I was going nuts as it would not happen all the time but then after a period of time I was able to replicate it....so I knew I was not going nuts ...it was happening . It's been a few months since the reset and it still is shifting fine but I make it a point of jumping down hard on it at least once a week

Dave