A6 Transmission 2-3 Shift Not Working Correctly
Thread Starter
Pro
Joined: Sep 2020
Posts: 537
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From: Ogden, Utah
A6 Transmission 2-3 Shift Not Working Correctly
I just had my 2013 A6 rebuilt, and as we are road testing it, intermittently the 2 to 3 shift, shifts extremely hard. Prior to having the transmission rebuilt it was flaring really bad from 2 to 3, and at WOT it wouldn't make the shift at all. It has never kicked out a code. When we opened it up all the soft parts were fried. We changed out all the internals to new parts including the hard parts. Also installed a 3200 stall at the same time.
So my question is what could be causing the intermittent hard 2-3 shift? Without a code we are kind of guessing here. We are thinking it must be a control problem. Does this sound like a pressure solenoid problem? Does the TCM possibly need to be changed?
Any help or advice would be much appreciated!
So my question is what could be causing the intermittent hard 2-3 shift? Without a code we are kind of guessing here. We are thinking it must be a control problem. Does this sound like a pressure solenoid problem? Does the TCM possibly need to be changed?
Any help or advice would be much appreciated!
Drifting
Joined: Apr 2000
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From: Lake Mary Florida
Burning Brakes
Joined: Jun 2003
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From: Knoxville TN
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Thread Starter
Pro
Joined: Sep 2020
Posts: 537
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From: Ogden, Utah
There are only really two tuners I know of in the Salt Lake area that I am aware of, and I am not sure I trust either anymore. May see what is available in Vegas.
Thread Starter
Pro
Joined: Sep 2020
Posts: 537
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From: Ogden, Utah
How can a custom A6 tune affect solenoid pressures? If I had a custom tune done on my otherwise stock A6 previously and now have built the transmission could the tune cause intermittent hard shifts between 2-3? I am by no means a transmission expert.
Burning Brakes
Joined: Jan 2017
Posts: 961
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From: Diamondhead Mississippi
St. Jude Donor '17-'18-'19-'20-'21-'22
If you have an aftermarket radio I would suggest you pull the radio fuse before flashing the TCM. I just had my trans in my 06 rebuilt including a new TCM. When the TCM was flashed it screwed up the PAC RP5-GM11 interface. Had to pull the radio fuse to get the CAN bus to communicate. New PAC unit in the mail today so hopefully I will be back with everything working. I sent a PM to Dano523 and he is the one that told me about pulling the radio fuse first to keep this from happening.
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2024 C6 of the Year Finalist - Modified
2020 Corvette of the Year Finalist (track prepared)
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I just had my 2013 A6 rebuilt, and as we are road testing it, intermittently the 2 to 3 shift, shifts extremely hard. Prior to having the transmission rebuilt it was flaring really bad from 2 to 3, and at WOT it wouldn't make the shift at all. It has never kicked out a code. When we opened it up all the soft parts were fried. We changed out all the internals to new parts including the hard parts. Also installed a 3200 stall at the same time.
So my question is what could be causing the intermittent hard 2-3 shift? Without a code we are kind of guessing here. We are thinking it must be a control problem. Does this sound like a pressure solenoid problem? Does the TCM possibly need to be changed?
Any help or advice would be much appreciated!
So my question is what could be causing the intermittent hard 2-3 shift? Without a code we are kind of guessing here. We are thinking it must be a control problem. Does this sound like a pressure solenoid problem? Does the TCM possibly need to be changed?
Any help or advice would be much appreciated!
Thread Starter
Pro
Joined: Sep 2020
Posts: 537
Likes: 169
From: Ogden, Utah
We used Raybestos packs. A shop in Salt Lake City that I was highly recommended by other forum members did the rebuild. I am starting to think I made a huge mistake. I should have shipped you guys the car. It would have been easier at this point.
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2024 C6 of the Year Finalist - Modified
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See if you can get a copy of your tune and email it to me. I might get lucky and find something that isn't right.
Thread Starter
Pro
Joined: Sep 2020
Posts: 537
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From: Ogden, Utah
Supporting Vendor
Joined: Feb 2011
Posts: 3,523
Likes: 885
2024 C6 of the Year Finalist - Modified
2020 Corvette of the Year Finalist (track prepared)
2019 C6 of Year Winner (track prepared)
Thread Starter
Pro
Joined: Sep 2020
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From: Ogden, Utah
The new TCM fixed the shifting issues completely. It now just has a factory tune. I am going to get the custom tune off the old TCM and email it to you to take a peak. Car is running great now though.
Drifting
Joined: Apr 2000
Posts: 1,442
Likes: 209
From: Lake Mary Florida
Did you have to take it to a GM dealer to flash the TCM with the VIN and stock tune? BTW, I see your location is Ogden, UT. Prior to retirement I worked for Westinghouse and I made many visits to the Zirconium plant there. Nice town.
Thread Starter
Pro
Joined: Sep 2020
Posts: 537
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From: Ogden, Utah
Yeah I have lived in Ogden for about 3 years now. I like it here a lot. Hard to beat the views around here.