A8
Thread Starter
Melting Slicks
Joined: Aug 2004
Posts: 3,151
Likes: 294
From: Opelousas, Lousiana
CI 6-7 & 9 Veteran
A8
I know there have been numerous threads about a A-8 issues but I am really getting worried. I have an issue with mine that has recurred several times, except when the car is at the dealer. They say they cannot duplicate the problem. It was in the shop from Tuesday until Saturday last week and I get the ticket and it says there is nothing wrong with my car.. there is. 5 minutes after I picked it up, the problem occurred and then twice since then. Here is what is going on:
In the sport mode and the shifter is set to "D." I speed up from like 60 to 70 to change lanes, and it downshifts as it should but then over revs and does not upshift unless I do it with the paddles or put it in neutral and then back to drive. I happened to be looking at the gauges on the heads up and I notice it shows the tranny is in" M" but I look down and the shifter still says "D."
I am going to bring it back in on Monday drive it with the shop foreman but if he still says there is nothing wrong, I am out of ideas except to order a new car with a manual transmission. I am concerned that this could be a symptom of a far greater problem. It shifts fine in every other mode.
Any ideas on a different way forward?
In the sport mode and the shifter is set to "D." I speed up from like 60 to 70 to change lanes, and it downshifts as it should but then over revs and does not upshift unless I do it with the paddles or put it in neutral and then back to drive. I happened to be looking at the gauges on the heads up and I notice it shows the tranny is in" M" but I look down and the shifter still says "D."
I am going to bring it back in on Monday drive it with the shop foreman but if he still says there is nothing wrong, I am out of ideas except to order a new car with a manual transmission. I am concerned that this could be a symptom of a far greater problem. It shifts fine in every other mode.
Any ideas on a different way forward?
Thread Starter
Melting Slicks
Joined: Aug 2004
Posts: 3,151
Likes: 294
From: Opelousas, Lousiana
CI 6-7 & 9 Veteran
Race Director
Joined: Jul 2000
Posts: 10,775
Likes: 199
I know there have been numerous threads about a A-8 issues but I am really getting worried. I have an issue with mine that has recurred several times, except when the car is at the dealer. They say they cannot duplicate the problem. It was in the shop from Tuesday until Saturday last week and I get the ticket and it says there is nothing wrong with my car.. there is. 5 minutes after I picked it up, the problem occurred and then twice since then. Here is what is going on:
In the sport mode and the shifter is set to "D." I speed up from like 60 to 70 to change lanes, and it downshifts as it should but then over revs and does not upshift unless I do it with the paddles or put it in neutral and then back to drive. I happened to be looking at the gauges on the heads up and I notice it shows the tranny is in" M" but I look down and the shifter still says "D."
I am going to bring it back in on Monday drive it with the shop foreman but if he still says there is nothing wrong, I am out of ideas except to order a new car with a manual transmission. I am concerned that this could be a symptom of a far greater problem. It shifts fine in every other mode.
Any ideas on a different way forward?
In the sport mode and the shifter is set to "D." I speed up from like 60 to 70 to change lanes, and it downshifts as it should but then over revs and does not upshift unless I do it with the paddles or put it in neutral and then back to drive. I happened to be looking at the gauges on the heads up and I notice it shows the tranny is in" M" but I look down and the shifter still says "D."
I am going to bring it back in on Monday drive it with the shop foreman but if he still says there is nothing wrong, I am out of ideas except to order a new car with a manual transmission. I am concerned that this could be a symptom of a far greater problem. It shifts fine in every other mode.
Any ideas on a different way forward?
This is normal operation for both the A6 and A8. There is nothing wrong.
Do a search on here or read your owner's manual.
Thread Starter
Melting Slicks
Joined: Aug 2004
Posts: 3,151
Likes: 294
From: Opelousas, Lousiana
CI 6-7 & 9 Veteran
I had an A6 in my C6 it did not fail to shift. Unless the car is in M it should not fail to shift. The dealer said it was abnormal, they just could not duplicate the problem.
Maybe I need to contact someone at GM.
Maybe I need to contact someone at GM.
Last edited by crawfish333; Sep 20, 2015 at 10:14 PM.
Racer
Joined: Aug 2015
Posts: 377
Likes: 61
From: Portland Oregon
Based on you saying that it happens almost immediately when you're driving, but never happens when the service techs are driving the car, then that would imply that the problem is something you're doing, not something wrong with the car. It could be that since you're in sport mode the car shifts later than you expect/want and you get impatient and hit the paddle shifter switching the car to [M]anual mode? The car will hold a gear longer in Sport mode than touring as I understand.
I suggest you go back into the dealer again and this time ask the tech to ride in the car with you while you're driving. That way when the problem happens he will be there to help diagnose the cause. Best of luck!
I suggest you go back into the dealer again and this time ask the tech to ride in the car with you while you're driving. That way when the problem happens he will be there to help diagnose the cause. Best of luck!
Last edited by efarley; Sep 20, 2015 at 10:24 PM.
Instructor
Joined: Mar 2006
Posts: 246
Likes: 33
From: Mission Viejo, Ca
If you touch the paddles it puts the trans in Manual, that's why you saw the M. You can move the shifter as have or hold the Up paddle for 1 second to go back to Auto. If the car thinks you driving on a track it will hold the lower gear for a longer time. Since it seems you can reproduce it try again and don't manually upshift with the paddle, see if the car will do it on its own.
Thread Starter
Melting Slicks
Joined: Aug 2004
Posts: 3,151
Likes: 294
From: Opelousas, Lousiana
CI 6-7 & 9 Veteran
Thanks, I am going to try 2 things:
1. Go back to the dealer, let the tech drive the car, and tell him what to do. (Get up to about 60 in sport mode, accelerate to pass, then see if it the car shifts) Then He can tell me if it is normal.
2. I am also going to drive it to work tomorrow and put the SD card in to record with the Gauges showing and see if I can duplicate it. Then I will email to a the Service manager.
I am pretty sure if I record long enough, it will happen.
I did go back and read both sections of the manual (Driving in D, and the section on driving in D and in the Sport mode. It is somewhat confusing. I wish I could speak with an expert...
1. Go back to the dealer, let the tech drive the car, and tell him what to do. (Get up to about 60 in sport mode, accelerate to pass, then see if it the car shifts) Then He can tell me if it is normal.
2. I am also going to drive it to work tomorrow and put the SD card in to record with the Gauges showing and see if I can duplicate it. Then I will email to a the Service manager.
I am pretty sure if I record long enough, it will happen.
I did go back and read both sections of the manual (Driving in D, and the section on driving in D and in the Sport mode. It is somewhat confusing. I wish I could speak with an expert...
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Racer
Joined: Aug 2015
Posts: 377
Likes: 61
From: Portland Oregon
I really suggest you offer to drive with him in the passenger seat since the problem seems to occur when you're driving the car.
Race Director
Joined: Jul 2000
Posts: 10,775
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Race Director
Joined: Oct 2005
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From: Plymouth Massachusetts
2025 C7 of the Year Finalist- Unmodified
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One of my favorite things about my C7 A6 Z51 holds the RPM's when I am driving in sport mode and I like it!
Drifting
Joined: May 2015
Posts: 1,412
Likes: 140
GM can not repair it at this time. The check valve kit repair is not yet available. What is happening is fluid starvation in the tranny due to the oil draining to the pan two quickly causing loss of forward motion. PM me so I have your email address and I will let you know what's going on with the fix. I am working directly with GM on this issue. I have it also.
Racer
Joined: Aug 2015
Posts: 377
Likes: 61
From: Portland Oregon
GM can not repair it at this time. The check valve kit repair is not yet available. What is happening is fluid starvation in the tranny due to the oil draining to the pan two quickly causing loss of forward motion. PM me so I have your email address and I will let you know what's going on with the fix. I am working directly with GM on this issue. I have it also.
Drifting
Joined: May 2015
Posts: 1,412
Likes: 140
Seriously do you copy and paste this on any post involving a transmission? This guy isn't even experiencing a transmission problem and just doesn't understand the correct function of his transmission as has been stated numerous times by other members.... why aren't you banned yet for repeatedly spreading this false rumor and trying to hijack every transmission post that comes up.
Last edited by Black&White; Sep 21, 2015 at 07:20 PM.
Drifting
Joined: May 2015
Posts: 1,412
Likes: 140
Seriously do you copy and paste this on any post involving a transmission? This guy isn't even experiencing a transmission problem and just doesn't understand the correct function of his transmission as has been stated numerous times by other members.... why aren't you banned yet for repeatedly spreading this false rumor and trying to hijack every transmission post that comes up.
Safety Car
Joined: Apr 2007
Posts: 4,547
Likes: 609
From: Southeast, WI
GM can not repair it at this time. The check valve kit repair is not yet available. What is happening is fluid starvation in the tranny due to the oil draining to the pan two quickly causing loss of forward motion. PM me so I have your email address and I will let you know what's going on with the fix. I am working directly with GM on this issue. I have it also.
Racer
Joined: Aug 2015
Posts: 377
Likes: 61
From: Portland Oregon
No what you're set out on doing is trying to take advantage of poor people who have genuine problems with their transmission so you can try to drum up some support to back up your bs claim that GM needs to give you a refund for your car rather than honor the contract you agreed to, and that's why you **** me off, because you're trying to take advantage of people in a bad situation for your own personal gain and that makes you scum.
Last edited by efarley; Sep 21, 2015 at 07:44 PM.