[Evil-Bee-NH]

So this is in no way a penis size or tuner backlash thread nor is it intended to be this is a refresher because there's a lot of issues with people NOT reading peoples build journals or the simple drives section of the OP's avatar when it pertains to tuning and there's been a lot of why is your car different things. Now that my disclaimer is out of the way...

UPDATE ON 2017 A8 TUNING & TCM

So to have your 2017 A8 fully tuned you need both your ECM and TCM unlocked and tuned to actually have access to the full array of Torque Management restrictions GM has handed us. I've done a little digging on my own I know ChicagoTommy and Nate.... will be happy for that and compiled a list of what I currently know I will first thank ThatGMPartsGuy for the Part # and information related to it.

So You will use up a total of 8 to 9 credits using HPTuners to tune your 2017 8-Speed Automatic Camaro. Why so many I've asked and heard asked well GM added all kinds of new security features and your Modules need to be unlocked prior to being tuned adding an extra level of complexity because no two unlock pins are the same. They are currently asking 4 Credits for the ECM unlock and 4 to 5 Credits for the TCM unlock. Here in lies the real issue, while the ECM is a day turnaround for unlocking the TCM needs to be physically sent into them to be unlocked at this time. The good news it can be done the bad news you need to remove your TCM from your car. Your other option is this as ChicagoTommy got me rolling why not order a Spare TCM so your car isn't down well I dusted off my shovel and started digging and found out only your Dealership can order the part right now on SPECIAL ORDER. That's not to say the parts suppliers can't get it but they need proof your vehicle is in for repair to order it from GM and to my undersanding needs to be shipped to a dealership, this means you better have a friend or a friendly dealership maybe Maureen@RodgersChevrolet could help with this? So what's the part number and the cost you may be asking well here it is.

2017 A8 Transmission Control Module Part #: 24279973 - MSRP: $216.18, ONLINE PARTS DEALERS: $131.87



2016 vs. 2017 2.0T Comparison

They are the same car there are several differences in options even with early and late model 2017 builds. They both share the same drivetrain M6 or A8 same body and body kit options from the factory etc. Late model 2017's got the advantage of having a full catalog to build from while early 2017's had maybe 2 more options then the 2016's if your not counting the 50th Anniversary Editions.

The two huge differences we've run into on THIS forum and the biggest issues and misunderstood argument points.

2016 and 2017 have slightly different PCV hookups on the CAI's 2016's simply unhook and re-hook the 2017's have this annoying connector that JacFab & Mishimoto have made special gizmo's for easier removal. Personally I just broke mine and called it a day.

2016 and 2017 Tuning is entirely different in terms of the process. This cannot be overstated all vendors, drivers and forum lurkers need to understand what model year is being represented before posting otherwise you can start uninformed or un-needed pissing contests or your an idiot contests. We've finally managed to stop those on here and i'm sure we'd all like to keep it that way.

2017 Camaro's have added security by GM your ECM & TCM is essentially locked. You need to get the Access PIN from HPTuners or any other Tuner you use before you can even tune your ECM. Also must Tuners are still working on full 100% support with their versions unless i'm incorrect. Further steps need to be taken for your TCM as of right now you need to REMOVE your TCM and send it in to be unlocked this leaves your car high and dry until you get it back in. On 2017's you are limited by the TCM issue on how far you can tune your car effectively as without altering the TCM you won't be able to allow the ECM to release the power you want to attain. Essentially though the 2016's had random gremlins with suspension or lack of options they are 100% tuneable right from the get go.

If I missed something or used incorrect information I apologize feel free to correct or add to this conversation.

[Corner carver]

Originally Posted by Evil-Bee-NH

So this is in no way a penis size or tuner backlash thread nor is it intended to be this is a refresher because there's a lot of issues with people NOT reading peoples build journals or the simple drives section of the OP's avatar when it pertains to tuning and there's been a lot of why is your car different things. Now that my disclaimer is out of the way...

2016 vs. 2017 2.0T Comparison

They are the same car there are several differences in options even with early and late model 2017 builds. They both share the same drivetrain M6 or A8 same body and body kit options from the factory etc. Late model 2017's got the advantage of having a full catalog to build from while early 2017's had maybe 2 more options then the 2016's if your not counting the 50th Anniversary Editions.

The two huge differences we've run into on THIS forum and the biggest issues and misunderstood argument points.

2016 and 2017 have slightly different PCV hookups on the CAI's 2016's simply unhook and re-hook the 2017's have this annoying connector that JacFab & Mishimoto have made special gizmo's for easier removal. Personally I just broke mine and called it a day.

2016 and 2017 Tuning is entirely different in terms of the process. This cannot be overstated all vendors, drivers and forum lurkers need to understand what model year is being represented before posting otherwise you can start uninformed or un-needed pissing contests or your an idiot contests. We've finally managed to stop those on here and i'm sure we'd all like to keep it that way.

2017 Camaro's have added security by GM your ECM & TCM is essentially locked. You need to get the Access PIN from HPTuners or any other Tuner you use before you can even tune your ECM. Also must Tuners are still working on full 100% support with their versions unless i'm incorrect. Further steps need to be taken for your TCM as of right now you need to REMOVE your TCM and send it in to be unlocked this leaves your car high and dry until you get it back in. On 2017's you are limited by the TCM issue on how far you can tune your car effectively as without altering the TCM you won't be able to allow the ECM to release the power you want to attain. Essentially though the 2016's had random gremlins with suspension or lack of options they are 100% tuneable right from the get go.

If I missed something or used incorrect information I apologize feel free to correct or add to this conversation.

TCM = transmission control modules?
If that's the case is there anything preventing the 2017 M6 cars from being fully tuned?

[Evil-Bee-NH]

Originally Posted by Corner carver

TCM = transmission control modules?
If that's the case is there anything preventing the 2017 M6 cars from being fully tuned?

As far as i know this only affects the A8.

[ChicagoTommy]

Originally Posted by Evil-Bee-NH

Essentially though the 2016's had random gremlins with suspension or lack of options they are 100% tuneable right from the get go.

What random suspension gremlins? I was under the impression that the suspension was unchanged from 2016-2017.

[Michigan1LTRS]

Originally Posted by ChicagoTommy

What random suspension gremlins? I was under the impression that the suspension was unchanged from 2016-2017.

Yeah, I'm not aware of any gremlins or changes other than the TCM tuning is a PIA.

[Evil-Bee-NH]

Originally Posted by ChicagoTommy

What random suspension gremlins? I was under the impression that the suspension was unchanged from 2016-2017.

They had cracked end-links on some early models in 2016. It may have just been on the V6's but I never found out if it was on the I4's as well because they share the same end links as far as I can tell.

[Adp2017]

Originally Posted by Evil-Bee-NH

As far as i know this only affects the A8.

I hope this is the case! Would make me more confident when going to tune in the next couple months.

[Evil-Bee-NH]

Updated with tuning process and options.

[Jason@JacFab]

Originally Posted by Evil-Bee-NH

only your Dealership can order the part right now on SPECIAL ORDER. That's not to say the parts suppliers can't get it but they need proof your vehicle is in for repair to order it from GM and to my undersanding needs to be shipped to a dealership, this means you better have a friend or a friendly dealership maybe Maureen@RodgersChevrolet could help with this? So what's the part number and the cost you may be asking well here it is.

I don't imagine that would be a huge problem to get the parts... Typically you can just give them the vin number and if they can't get it, they will open a SPAC case to get it as soon as one becomes available if there is a shortage.

I've gotten parts for cars that I don't even own, give them a vin tell them I need it, at one point, GM even offered to send the dealer ship a complete engine off the line to get the parts I wanted off of it, but I didn't want the dealership to go through all the hassle...

I had to have them open a SPAC case to get a replacement bypass valve for me here not to long ago. No big deal.

[Jason@JacFab]

I wanted to throw some more info, and my thoughts on this 2017 TCM delima...

In my opinion, it is NOT worth sending your TCM in to have it "unlocked" so it will be tunable... This is ASSUMING that the 2017 TCM uses/has all the same tables as the 2016 TCM that you don't have to unlock to tune.

Why? Still half the tables related to the tq management are missing. Not just limited to the 2.0, but even the v6/v8 cars, half the tables are gone.

I'm no expert, but as far as I can tell a lot of the tables you really need aren't there yet... So even if you paid them to unlock your TCM, you'd still be limited at current time of what you can do with HP Tuners... Now perhaps EFI Live has unlocked a bunch of other tables, but I couldn't tell you...

Handy things you can do are adjust shit times, and pressures. You can 100% disable the Tq mgmt for the upshifts, but as you adjust the pressures to get rid of the slip, it starts shifting like a rock on the street and isn't very pleasurable to drive. It also shifts slower when the tq mgmt is disabled, and forces the clutch packs to have to overcome the engine power, which probably isn't great for the transmission in the long run.

What we really need is more tables to LIMIT the tq mgmt, tables which don't seem to be there yet, even for us lucky 2016 guys.

[Jason@JacFab]

Originally Posted by cooper1965

Wow... WTF??
Not sure if it helps, but the M6 cars also have TM. Gm must have that set up somewhere in the ECM.?

There are two separate TM sections. One for the engine (I assume in the ECM), which both the automatic and manual cars have, and one for the transmission (I assume in the TCM), which the manual car does not have, only the automatic car.

[ChicagoTommy]

As much as Evil-Bee likes to bitch about it, I don't think tuning the TCM will provide the gains he thinks it will, especially not on a dyno. Our ECU tells the TCM what to do. TCM can not adjust ECU parameters, just report problems and execute functions. Torque Management is only active during a shift, which doesn't happen on a dyno. Dynos typically only use whatever the closest gear to 1-1 is. Of course, I'm not going to be the person to shell out several hundred to find out, as the Camaro is a banger.

[Evil-Bee-NH]

Originally Posted by ChicagoTommy

As much as Evil-Bee likes to bitch about it, I don't think tuning the TCM will provide the gains he thinks it will, especially not on a dyno. Our ECU tells the TCM what to do. TCM can not adjust ECU parameters, just report problems and execute functions. Torque Management is only active during a shift, which doesn't happen on a dyno. Dynos typically only use whatever the closest gear to 1-1 is. Of course, I'm not going to be the person to shell out several hundred to find out, as the Camaro is a banger.

I am tending to agree with your assessment more as i tweak little things myself and get datalogs from my tuner. We did some guess work and the shift delay was more a result of the traction control and stabilitrak.

[RobertAvitia]

Looks like you can get tcm from
Summit racing??

https://m.summitracing.com/parts/nal-24279973