davanz

During the Museum Bash just completed I attended Paul's transmission presentation and also was able to meet him at his one on one session. I asked him about the V4 mode rpm variations and told him what I have observed with my 2016 A8. His response was that the rpm fluctuation is designed into the system for V4 vibration control. When I questioned further about TC clutch wear and life with 100-150 rpm changes at steady speed cruising, he was adamant that this was normal operation and we should not be concerned about it, just drive the car. What are your thoughts on his comments on this?

Also, and just for my curiosity, is he an independent servlce tech, connected with a dealership, with GM, or other?

Poltergeist

Paul works for Jackson Chevrolet in Ct.

thill444

According to LinkedIn he is a certified technician at Jackson Chevrolet in CT. So GM employee.

Iconic

He is what GM titles a world class technician and I firmly believe he knows what he's talking about regarding anything Corvette and other Gm vehicles.

thill444

Maybe I am missing something here, but aren't folks taking their car in for this issue, and getting their torque converter replaced with an updated one, and the issue goes away? If this is software based and designed by the system wouldn't every single A8 Corvette exhibit this issue?

Or am I missing something?

tome

Actually a dealer employee is not a GM employee as dealerships are independent from GM.

hisvett

With 47K on my '15 A8, I haven't noticed this issue. I use my cruise control all the time when on the open road and the speed doesn't fluctuate more than + or - 1 MPH if at all. BUT I do have issues with "Slow to Engage" when shifting into "D".....did Paul have anything to say about that?

I've been to the Bash for the last two years but miss all the lectures because of working across the highway at the track....perhaps it's on YouTube.

OVR60

Over the years he has done very well at marketing himself as the Guru of Corvette. There are many mechanics just as knowledgable that don't put on a big show like the one at Carlisle. He works of a dealership not GM like someone mentioned in a previous post.

ddelallata

I noticed my 8/16 build date 2017 GS started with the RPM fluctuations at around 500 miles.
I haven't noticed any of the shuddering that others have experienced and now have 3500 miles on the car, but I do have a Range AFM disabler plugged in since it hit 1500 miles.
I hope Paul is right about what the OP posted.

\Boost Monkey/

Bingo.

Yes the RPM fluctuations (from micro-slips) are built in to dampen the transition to/from AFM mode, but if ALL slippage was within GM parameters then we wouldn't have re-designed TC's 3 times over, multiple TSB's, and replacements authorized by GM.

I would have geared the question to him towards "slippage outside of normal operating conditions/parameters".

I would trust an automotive/mechanical engineers response versus a local tech that works for a dealership. This is an engineering question imho.

davanz

At his transmission seminar Saturday afternoon I asked why GM has had at least three different part numbers for torque converters for this transmission. He answered by talking about Z-06 overheating issues,etc., and never answered the direct question. We're any of you here at that Saturday program?

capecodvette

Steve Garrett

Davan, Paul definitely knows his stuff. He is a Master GM technician. If he gives you advice, it's great advice. I don't think anyone here knows any better than Paul does.....unless they are also a Master Technician.

GR Jay

He may know his stuff but if what davanz says above is true, then he knows even better not to say anything negative about his employers employer. Sounds like he is also a good politician if he unwilling to answer a real question.

Stangslayer

I agree! Paul is the best.

YO-EL

I'd still like to know his answer about the 3 different torque converters..
Couplings and reasoning behind the 3x fluid flush.....

traronf

Paul does a great job putting on informative seminars here in Connecticut. By the increasing size of these events I'm not alone in appreciating his knowledge of the vehicle. At these seminars he claims he is under non-disclosure with GM so there are things he can talk about and things he can't and perhaps he did not want to go down this path on the A8. BTY, when he services my car he takes the time to come out and explain what's going on with it and hearing that directly from the mechanic goes a long way instead of a filtered response from a service advisor. He is a Corvette advocate and we are lucky to have him here in Connecticut.

GentleBen

To further complicate matters, Paul announced at the BASH during his seminar early Saturday that there will shortly be a TSB to reflash the engines and transmissions of the 2016 MY cars.

Who knows what that will bring about?

joemessman

Forgive my ignorance, but what does MY stand for?

JoesC5

model year