So, being 'normal', it's unlikely that GM would fix anything to stop that? It's a real shame because this is the most awesome car I've ever owned, and that one thing drives me crazy. Yes, I have a Range, and yes it stays plugged in most of the time. It's not a huge deal, but it would be really nice if I could use AFM as intended and get the MPG benefits without having this needle constantly going up and down on my dash I also assume the new fluid is unlikely to change it? The first flush 2 years ago fixed my shudder, but had zero effect on the RPMs. Since my mileage is now over 55k, I took the Range out for a month or so to see if the shudder was back, and it is to a lesser degree, so I put it back in. I plan to take it into the dealer at 58k or 59k to get the new flush. I figure the longer I wait, the longer the fluid will stay newer. Ha! Plus I have the GMEPP on it until 2022, but I'd rather have it addressed under the drive train warranty.

Thank you for your input on this. You're the guy that seems to offer the most valuable insight of all of the posts I've read. And that means read for over 2 years... I've actually though of buying an aftermarket TC to finally put this thing to bed, but as yet I just can't bring myself to cough up that much $$$ for it. We've had several big financial 'projects' and needs over the last half year, so I need to get into savings mode again.

 

I have AFM on my 2016 Silverado with ~52,000 miles. I have yet to have any transmission or TC problems, or any other driveline issues of any kind. I often see it going into V4 mode and back to V8. Its flawless, and unless I see the "V4" on the dash, I wouldn't know it was switching back and forth. So my question is...is the AFM on my Silverado fundamentally different than the AFM on my 2014 with A6?

 

Thank you for the kind words , I try to only post answers and solutions that are proven truths and not some "Internet Urban Legend" or I heard it from a guy ...... to much of that BS is posted as truth
You could try to complain about the varying RPM but this is part of that "Slip" that is programmed in , especially if you are in v8 mode and dont see it
In some cases it's a lot and in others some say they never see it but without some slip .... it would be really bad

AFM is a good idea that's been around in several forms for years but it always suffers from problems ....
Dave

 

Don't know, all I can speak to is the AFM and its operation in the A8
The A6 Has been around a long time and is fundamentally a different transmisson from the A8 , ratios are different which i am sure require different slip ratios

As far as your truck .... believe me , Just like the Corvette A8 , there are plenty of people that have have the issue with their truck Cadillac or other GM product that has the A8 , consider yourself lucky as I am if you dont have an issue

Dave

 

This is exactly what I fear. The "dealer pushback". Dealer putting you off over and over again. We know, when the dealer has decided to play the waiting game, and has decided to wait for your warranty to expire. It's easy to say; just go in and get another tranny flush when the shudder starts. Who purchases a new car, so we go to the dealer again, wait to be written up, wait for a shuttle to become available, or arrange for someone to pick you up, go home/work without a car now, then arrange everything "again" to return to the dealer and wait in line to get your car back. If the dealer had to come and pick up the car, drop off a loaner car, and bring back your car and pick up the loaner car, it would quickly become an important fix. I haven't had the problem, and I hope I never do. I also had two nissan's tranny go out on me. $4,000 right out of warranty. First tranny, Nissan took care of it. Nissan and Infinity will not be happening in my garage EVER again. I will bad mouth Nissan's CVT forever and 2 days. Lexus's CVT have been fine in the past. Nissan Tranny, SUCKS!! TANGENT ALERT!! If something like this happens to my Corvette, GM will be #2 on the list. FOREVER!! If the dealer is sincerely trying everything he can, I may stick around (things happen, just try and remedy the issue). If I get the pushback or warranty expiration waiting game, I'll be gone. Dealer refusing to work on your car? I'd like to know who it is, if it was in my area. Good dealer, let us know. Bad dealer, let us know.

 

The main reason the dealer that is close to me would not work on the car is because when they had it on the lift for something else, the tech noticed one of the chassis bolts had been sheared off and felt the selling dealer should take care of it because he didn't want the liability. They have been great for anything else I bring the car in for. Brought it to a friends shop and after much aggravation he got the old bolt out, re tapped and put new bolt in.

 

Wow. Thanks for that clarification. My feeling (not necessarily correct) is being as your warranty is probably expired, I can understand the reluctance to deal with that problem. Potential can of worms. Either way, I'm glad you were able to take care of it. Really glad to hear you're happy with your dealer.