A8 transmission problem is occuring
Team Owner
Joined: Jul 2004
Posts: 28,475
Likes: 3,291
From: Hartford WI
I purchased a 2016 with 22k miles a few weeks ago and began experiencing the shudder. I took it to a nearby Chevrolet dealer with a Corvette mechanic and had it triple flushed for $425.00. I've only put about 1000 miles since, but so far so good. They wanted an extra $300 for the TCM update, I did not do this, as I will be making adjustments myself with EFILive.
It is 3.8 hours to do @ $161 an hour. $287.76 for 24 qts of fluid. About $900. I wonder what they corner they cut.
Melting Slicks
Joined: Jan 2015
Posts: 2,105
Likes: 949
From: Fleming Island Florida
…I am not excatly surewhen the e TCM update came out as some cars might come already updated with the latest firmware . My 2015 did not so I updated it
I would ask the dealer to do a PICO test as this will tell them if its the trans or something else
Dave
Now also wondering what is the PICO...
I would ask the dealer to do a PICO test as this will tell them if its the trans or something else
Dave
Now also wondering what is the PICO...
Le Mans Master
Joined: Oct 2014
Posts: 8,673
Likes: 2,728
From: Atlanta GA
Without getting to in depth , a short abridged definition is a pico test measures the frequency of the vibration and by determining the frequency you can pinpoint the cause
Vibration caused by a bent wheel can mimic what one would think is the shudder , but if you look at the pico results you would see that it is happening at a different frequency which would eliminate the torque converter as the cause
Anything that rotates has the possibly of causing a harmonic vibration ....
Dave
Vibration caused by a bent wheel can mimic what one would think is the shudder , but if you look at the pico results you would see that it is happening at a different frequency which would eliminate the torque converter as the cause
Anything that rotates has the possibly of causing a harmonic vibration ....
Dave
Le Mans Master
Joined: Oct 2014
Posts: 8,673
Likes: 2,728
From: Atlanta GA
Dave
Le Mans Master
Joined: Oct 2014
Posts: 8,673
Likes: 2,728
From: Atlanta GA
When you plug your car in and connect , the system will scan all your modules and provide a list of the current firmware and if there are any later versions .
The GM MDI is just acting as a pass thru device between the web site and the car using the OBD port
To upload a later version if avalable is as simple as selecting the update and pushing a button , then following the on screen instructions . A progress bar will show you the status and when complete it will tell you
As with any type of update , it is not for the faint of heart as you don't want anything to interfere with the download as it could brick the module ... low battery in the car , low battery in the laptop , bad internet connection , accidentally bumping the OBD cable.....
Dave
Team Owner
Joined: Jul 2004
Posts: 28,475
Likes: 3,291
From: Hartford WI
Yep , but the only way to see whats available, you would need a GM MDI device and access to GM TDS site ( formerly known as TIS ) . You can buy a 3 day pass , 1 month pass and a yearly pass . When I need it I just buy the 3 day pass
When you plug your car in and connect , the system will scan all your modules and provide a list of the current firmware and if there are any later versions .
The GM MDI is just acting as a pass thru device between the web site and the car using the OBD port
To upload a later version if avalable is as simple as selecting the update and pushing a button , then following the on screen instructions . A progress bar will show you the status and when complete it will tell you
As with any type of update , it is not for the faint of heart as you don't want anything to interfere with the download as it could brick the module ... low battery in the car , low battery in the laptop , bad internet connection , accidentally bumping the OBD cable.....
Dave
When you plug your car in and connect , the system will scan all your modules and provide a list of the current firmware and if there are any later versions .
The GM MDI is just acting as a pass thru device between the web site and the car using the OBD port
To upload a later version if avalable is as simple as selecting the update and pushing a button , then following the on screen instructions . A progress bar will show you the status and when complete it will tell you
As with any type of update , it is not for the faint of heart as you don't want anything to interfere with the download as it could brick the module ... low battery in the car , low battery in the laptop , bad internet connection , accidentally bumping the OBD cable.....
Dave
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Le Mans Master
Joined: Oct 2014
Posts: 8,673
Likes: 2,728
From: Atlanta GA
I chose the latter and it has paid for itself many times over for not only myself but for others who live local and have asked me for help
Dave
Pro
Joined: Apr 2006
Posts: 737
Likes: 24
From: Edwardsville IL
Without getting to in depth , a short abridged definition is a pico test measures the frequency of the vibration and by determining the frequency you can pinpoint the cause
Vibration caused by a bent wheel can mimic what one would think is the shudder , but if you look at the pico results you would see that it is happening at a different frequency which would eliminate the torque converter as the cause
Anything that rotates has the possibly of causing a harmonic vibration ....
Dave
Vibration caused by a bent wheel can mimic what one would think is the shudder , but if you look at the pico results you would see that it is happening at a different frequency which would eliminate the torque converter as the cause
Anything that rotates has the possibly of causing a harmonic vibration ....
Dave
Team Owner
Joined: Jul 2004
Posts: 28,475
Likes: 3,291
From: Hartford WI
You mean the former? Pretty sure my wife will put her foot down if I even thought of being the "Regional Tech" and having people knocking on our door.
Last edited by aklim; Sep 23, 2023 at 10:35 AM.
Le Mans Master
Joined: Oct 2014
Posts: 8,673
Likes: 2,728
From: Atlanta GA
Team Owner
Joined: Jul 2004
Posts: 28,475
Likes: 3,291
From: Hartford WI
I didn't even know if that was a possibility. They mentioned that unless there were issues, they prefer not to do it. Kinda why I am thinking that I can scan it and see what I want. Any idea what are the possibilities for updates that if I sent you a PM with the VIN?
Le Mans Master
Joined: Oct 2014
Posts: 8,673
Likes: 2,728
From: Atlanta GA
What are you trying to cure ... , just like computer BIOS , you don't want to update just for the sake of updating unless you have a specific problem that might be caused by a module issue
Dave
Team Owner
Joined: Jul 2004
Posts: 28,475
Likes: 3,291
From: Hartford WI
Nope , car needs to be plugged in to MDI , connected to a Laptop , which is connected to GM's TDS , TDS is has a minimum charge of 65 dollars for 3 day pass ...
What are you trying to cure ... , just like computer BIOS , you don't want to update just for the sake of updating unless you have a specific problem that might be caused by a module issue
Dave
What are you trying to cure ... , just like computer BIOS , you don't want to update just for the sake of updating unless you have a specific problem that might be caused by a module issue
Dave
Le Mans Master
Joined: Oct 2014
Posts: 8,673
Likes: 2,728
From: Atlanta GA