Dave80C3

I was not familiar with the TIS site.

Thank you very much. I just did that. This is what I got, 84136537 - Real Time Damping. So I have the old like I figured.

This 84168050 and this 84235322 are shown under the old part number. Are those the updates?

I will be calling the dealer to see about getting may car updated. Hopefully they can get me in next week

M_G

Just had my update done at my local dealer. They had not done one yet and the communication leading up to the even was terrible, but the system shows the updated part number for my 2016 so it looks like they figured it out. I think our tech is good, but the communication from the service adviser wasn't great so I was a little nervous.

I thought the ride was markedly better on the way home from the dealer even though it has not finished the required 8 hour waiting period yet. Excited to see how I feel about it tomorrow.

walleyejack

Cam2010

Ive been trying to run the TIS report. Everytime I get to the final it say "sps.exception.no-valip-cop". Anyone know what that means?

Jeff V.

Your car doesn't have MRC.

Cam2010

My car shows MRC (FE2) from the build sheet to the invoice and the MSRP label. So I'm very confident it does have it.

Jeff V.

Then there's a problem with the database entries for your car. A dealer would need to call Techline to get that cleared up.

Cam2010

Cam2010

Went to dealer first they ,GM, corrected issues with "no valid -cop" statement. Then they upgraded my FE2 . Went online and now everything appears to be correct including the calibration 84353686 ( base stingray w/ FE2). Drove car home and now it sits fro 8 hrs.

FYI if you live in the monmouth county NJ area Quality Chevrolet in old bridge knew exactly the deal no issues with pricing or anything else. I would recommend them.

changw1

Can someone tell me whether MRC was installed correctly on my 2017 GS?

Vin: 1G1YX2D79H5122851

Jeff V.

I think it was, but without an official list of calibrations from GM, I can't say for sure.

Sellout

Now I'm wishing I had written down what my calibration part number was when I first looked at this thread...

My car is at the dealership now (18GS FE6) and I asked them to do the mag ride update while it's there. Looking at the TIS site tonight I'm seeing 84421869 for the Real Time Damping calibration, but there's no history underneath it, which seems odd to me.

But that number matches every FE6 2019 Grand Sport VIN I've tried, and I read somewhere that the 2019s are coming with this complete upgrade out of the box now, so hopefully they did it right...

They quoted me a price of 280 so I didn't argue. Hoping to pick the car up tomorrow, assuming they don't need another full day to diagnose an engine tick.

iclick

My '17 shows no history either after getting the upgrade last month, so I would think you either have a late-build '18 that originally had the upgrade or the dealer has already done it. I would call them and verify, although I assume the TechLine will know if your car already has the upgrade and will advise the dealer accordingly.

JDMilw

This is exactly what mine shows now. Had the upgrade done last month. 2018 GS build 7/17.

Jeff V.

Don't put it past GM to change the text description without notice. I've seen quite a few 2017-2018 cars that were definitely upgraded, but don't have the text description. This is why I'm so annoyed that they won't publish a final list of calibrations.

I think you're ok. I went and pulled a bunch of random 2018 GS VINs and for unknown reasons they actually had two choices for the RTD calibration. The upgraded cars no longer have a choice and have the same calibration yours is showing.

It looks like the batch of MRC upgrade calibrations that were released in Q1 of this year (with the exception of the 2017 GS w/FE6) are all 844218xx. So far I've seen 84421867, 84421869 and 84421874.

JDMilw

^
Well definitely felt a difference in ride on the way home. I wouldn't call it dramatic, but noticeable. I'm satisfied.

daixloxbmw

My 2017 GS nonZ07 shows the same thing after I got the upgrade. I feel better knowing others also don't see the text "New calibration to support performance parts and motor sport catalog customers".

Sellout

mtaxman

weren't all 2018 GSs built with the new program? When this first came out that was the info that GM gave us...I had a late build 2017 - last week of the 17 build out - and I know mine came without. But the release said 18s were coming with it.

I hope you didn't pay even $42 for nothing. That's a mysterious price as well.

Jeff V.

No. 18s had 'some' of the new calibration logic. But not the full 2019 spec, which is what the upgrade takes you to.

So 14-17 gets the biggest change, while 18 will see a noticeable but less drastic difference.