GM J2534/MDI interface and Technical Support policy change

Donny Owner/Technician Wheat Ridge, Colorado Posted   Latest   Edited  
Tech Tip
Programming
Tooling
2019 Chevrolet Corvette Grand Sport 6.2L (7 LT1) 7-spd (TR6070)

GM has recent changes to their J2534 programming "packaging". In a nutshell GM has changed the way SPS (Service Programming System) looks in TIS2Web by giving it the look and feel of GDS2.

Functionality is still the same. GM is NOT eliminating support for J2534 programming. Some misunderstood this message. 

GM only provides hardware support for the GM devices (MDI and MDI 2) . If you are using other J2534 devices you will need to contact the device supplier for hardware support. This has been their policy in the past as well.

See the attached screen shot document

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Eri Technician
Larchmont, New York
Eri
 

Thank you for the update

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Dave Owner/Technician
Greenbrier, Arkansas
Dave
   

I used SPS today and the only difference is the first screen where you would normally have your list of interfaces only has 3 choices. J2534, tech2 pass thru and tech2 remote. Select j2534 regardless of which interface your using and a few screens later you will pick your actual interface Guess I should have read the first post. Oh well

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Anthony Technical Support Specialist
Kirkwood, Pennsylvania
Anthony
   

Is Bosch involved again? Their name popped up during the load. Someone never met a hierarchy tree that they didn't like. I swear bonuses must be given for devising ways to waste time. Guido

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Caleb Technician
Mishawaka, Indiana
Caleb
 

There is a J2534 Wrapper software they added. Do I need that if I'm not using MDI 2? I used my Cardaq plus 3 yesterday no issues 19 Equinox an 16 Cruze without it, no issues.

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Anthony Technical Support Specialist
Kirkwood, Pennsylvania
Anthony
 

Hi Caleb: You can cancel the MDI install. I just did it with a customer using a J-tool. HTH, Guido

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Caleb Technician
Mishawaka, Indiana
Caleb
 

Thanks Anthony. I guess my question is this. Is the J2534 Wrapper update for the MDI 2 or aftermarket J2534 devices?

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Michael Owner
Pelham, Alabama
Michael
 

Since Drew Technologies published this, I would think the J2534 Wrapper would be for third-party aftermarket devices, but I could be wrong: toolbox​.​drewtech​.​com/j2534toolbox/o…​.​pdf

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Anthony Technical Support Specialist
Kirkwood, Pennsylvania
Anthony
 

Hi Caleb: As others have stated, you need the wrapper. But it will try to install the MDI also. That part, you can cancel. Then it'll say something like" it may not have installed properly" and ask what you wish to do. I just selected that it "installed properly" since the customer was using a J-tool. Please keep in mind that this was around 7am EDT today. Things may've changed later…

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Justin Mobile Technician
Herriman, Utah
Justin
 

I honestly have had no issues with any year using MDI2. Same can’t be said with CardaqM.

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Jaime Diagnostician
Ocala, Florida
Jaime
 

I have to assume you've not tried programming a 96-99 Saturn, a … C, K, S or T truck PCM (certain configurations), or a ...... lol

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Justin Mobile Technician
Herriman, Utah
Justin
 

I have. Guess I’m just lucky that way.

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Rick Technician
Dracut, Massachusetts
Rick
 

AC Delco tech support recommended not using the MDI-2 to program on vehicles older than … We normally use a Tech 2 or AEZ flasher for those vehicles.

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Jaime Diagnostician
Ocala, Florida
Jaime
 

I still have my Tech 2, a Botch VCI and a GM MDI, knowing the potential for flash failures using a MDI 2.

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Justin Mobile Technician
Herriman, Utah
Justin
 

I have all of those also Jaime. I am not saying you won’t have issues. I am saying I haven’t had issues.

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Jaime Diagnostician
Ocala, Florida
Jaime
 

I know that Justin. I was more or less warning everybody ( by reminding you) that you have to be careful with certain vehicles since it's not universal to program them.

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Jaime Diagnostician
Ocala, Florida
Jaime
 

... and at 7:01 ... Bwahaha

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Jaime Diagnostician
Ocala, Florida
Jaime
 

Thank you Donny. During the first few days that the change was made it wasn't possible to choose any device that wasn't a GM tool (they were "greyed-out"). A customer advised me last night that they chose the J-2534 Tech 2, and while using a CarDAQ Plus, was successful in programming a new module. Dave Browning also wrote about that (in a post also in this thread).

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Elias Owner/Technician
Poway, California
Elias
 

Im a little confused on the selection of j2534 reset. Do you only select it after using a different j box than the last time? please clairfy as Im a little new to the gm stuff. Thanks!

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Jaime Diagnostician
Ocala, Florida
Jaime
 

As far as I can tell, you're correct. It seems to allow SPS using the last tool chosen.

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