fatsport

Any update on the ride in other modes? I'm taking my GS Z07 in tomorrow.

Jeff V.

Can you post your upgraded calibration number when you're done? My list is still missing 17 and 18 GS w/Z07.

The HACK

2017 GS w/ Z07, just picked up last week new from dealership. What does this mean?

Jeff V.

It means you do not have the upgrade.

Chuck380

2015 Z51
023204000
023106519
--23237970--New calibration to avoid erroneously setting DTCs

Reggied

Operating System: 23247866
Real Time Damping: 84136537

2017 GS A8

Do I have the updated firmware?

Jeff V.

No.

No.

recentlydivorced

purchased a used 2016 guess I need to do the online thing to see if the upgrade was done? Before my purchase?

The HACK

Just got it done this morning, this is the screen shot of the TIS website:

84421870: Real Time Damping

I thought it's suppose to reference some sort of performance calibration on the description? Does it take a while for the website to populate (just drove home from picking up the car 20 minutes ago)?

Jeff V.

The 17-18 cars don't have the 'performance catalog and motorsports customers' text. Your part number is right in the range I've been seeing for 17-18 cars.

Thanks for posting it. Now I can cross another one off my list.

red62vette

2017 GS M7 without Z07. It shows the following. I *think* it was done and *think* it rides much better. Can anyone confirm the real-time damping PN is correct? Thx.

Jeff V.

This looks correct based on the feedback I've seen from other forum users.

smoke411

Sorry but I am a new member so I may not be following proper procedure for chiming in here. Jeff V. has provided great info here and is trying to get his arms around a GM part number fiasco, in my opinion. I have had my 2017 GS FE6 into the dealer twice for K19 module update, and my Real Time Damping shows P/N 84421869 on the history, after the tech says he consulted with the Techline folks twice. I took it back the second time because it did not show the P/N 84375894 as I was hoping for. The Techline told the tech that 84421869 was the latest and correct P/N for my car. I see this also happened to others based on earlier posts.
My concern is that when Tadge released the mag ride updates he stated that "Chevrolet Performance" would release the updates to the dealers. I called Chevrolet Performance this morning, and they e-mailed me their bulletin, which clearly states that the P/N they are referring to is 84375894. I am concerned that the 84421869 maybe updated the Tour mode (resulting in the smoother street ride), but did not update the Track Mode for (for HPDE use). I obviously don't know this. I also just recalled Chevrolet Performance and spoke to a great contact who understands my concern. He is going to attempt to contact Engineering to find out what these 2 different software programs are about. He expects to get back to me by tomorrow depending on his luck in researching this in-house at Chev. If I know how to update the Forum, I will do so with whatever he tells me. Thanks for all the info I have learned from you guys!

Jeff V.

Thanks! I've tried to get an updated list of calibrations out of GM Performance as well as AC Delco's Technical Delivery Service. Nobody has been able to give me anything.

So many of these problems would go away if we could just get an "Official as of xx/yy/2018" list from GM.

red62vette

Interesting few last posts. When I had my upgrade done they asked me whether I wanted the "Track" or "Street" upgrade. The paperwork said they upgraded the "Street" and it now has PN 84421869. 2017 Z06/MT GS, BTW.

smoke411

OK, as I said in Post #213, I had called Chevrolet Performance and spoke to a great contact who understood our concern with whether we were getting the proper and intended performance update to the K19 Suspension Module. He did call me back today and also sent me an e-mail. He spoke to a friend of his in "Corvette Platform" who also does "calibrations". He made it quite clear to me that my "update" to my 2017 GS FE6, showing P/N 84421869, was NOT the one that was to be released by Chevrolet Performance and to incorporate the great suspension improvements intended by Tadge. As was discussed before on the Forum, the correct P/N is 84375894, and the description that should show up on the calibration history is as was listed here on the Forum before: "New calibration to support performance parts and motor sport catalog customers". He told me to go back to the dealer and (1) have the tech hook up his laptop to my car and pull up "GDS" (I don't know what that is) and that will show the K19 Module calibration actually in my car, just to make sure of what is installed. Then (2) ask the tech to call the Techline Customer Support Center (TCSC) and ask to speak to a Manager. Apparently there has been turnover in the Center and some are unaware of what we want. I am going to do this next Tuesday.
So I guess all of us who got the 84421869 that I read about on earlier posts are not where we wanted to be.

Heidemarie

Does this mean that 84375894 updates SPORT and TRACK modes and 84421869 updates TOUR mode? For those of us that ride in SPORT mostly. do we need both calibrations for 2017 GS?
Heidi
Save the Wave

daixloxbmw

I have 84421869 now and I used to drive exclusively in Sport because Track was way too harsh for the street and very skittish over rough roads but after the upgrade, I now noticed that Track is much more compliant and usable on the street. If I had to guess, I'd say the upgraded Track is maybe 20% firmer than Sport now, whereas it was 100% firmer before. I can absolutely notice a difference in Track with 84421869 so I'm confused that you're saying that 84421869 is not the performance upgrade. If that's true, how do we go about getting 84375894? I never drive in Tour mode so I wouldn't know if there was any difference there.

Good question, I'd like some more clarity on this as well.

red62vette

I am most interested in Tour and Sport improvements. So for me, is 84421869 the correct upgrade? It certainly seems to ride differently in Tour and Sport versus before.

Jeff V.

Everybody slow down a little bit. 84421869 is for 2018 GS with FE6. If you've got a 2018, you're fine. Smoke411 has a 2017.