GM and Ford Engine and Transmission Diagnostic Parameters

Dmitriy Analyst Ontario Posted   Latest   Edited  

Do you guys know about this resource? Would it be useful in your diagnostic practice?

gsi​.​ext​.​gm​.​com/gmspo/mode6

For each DTC it lists when the test is run and what criteria are triggers, typically in much more detail than stated in the service information:

diag​.​net/file/f2dmeajzr…

I have come across it while searching for exact set conditions for some DTCs, but it is not something that pops up on the first page of search results, so I decided to share it with you.

UPDATE: It has been pointed out that Ford has a similar resource at: motorcraftservice​.​com/freeresources…

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Scott Manager
California
Scott Default
 

Hi Dmitriy, This is an excellent resource and is very helpful in illustrating OBD test routines. I've been reading form those pages for years and I hope that those responsible for publishing this info realize how awesome it is to have. Ford has similar resources located here: Paul Baltusis (member here) is now retired from Ford Motor company and was partly responsible for publishing those

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Eric Owner/Technician
Wisconsin
Eric Default
 

I appreciated Paul's posts, I read every one I saw they were always a gold mine of information. I'm glad to hear he is still around and still involved with us techs.

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Paul Engineer
Michigan
Paul Default
 

I agree, the GM Mode06 site is a great resource. These are the sample calibrations provided for each test group as required by CARB for OBD certification. As you can see, each test group covers a lot of engines and vehicles. I opted to provide some easier to read OBD documentation on the motorcraftservice​.​com site, although it is not nearly as detailed as GM's cert documentation…

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Dmitriy Analyst
Ontario
Dmitriy Default
 

Thank you, Paul and Scott! I have updated my post to include the link for Ford as well. Now if someone knew where Chrysler has its info, that would be wonderful...

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Anthony Technical Support Specialist
Pennsylvania
Anthony Default
 

Hi Dmitriy: Once upon a time, in a land far away, two gentlemen from Chrysler (Joe DiFede and Chris Micha) put something together. While there was some value in the information, it was a bit difficult to use. I don't know if there really is any place it is available. I can't share what I have. If I could, it wouldn't necessarily be useful since it is over 18 years old. Guido

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Brin Diagnostician
Florida
Brin Default
 

Dmitriy, Thank you for the link sir. How can one find this link if you didn't provide it?

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Randy Analyst
Colorado
Randy Default
 

acdelcotds​.​com/subscriptions Scroll to the bottom, the link is there under service information.

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Eric Owner/Technician
Wisconsin
Eric Default
   

Yep, they hide it in plain sight. So many things, so little time to find them all.

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Martin Instructor
British Columbia
Martin Default
 

Brin. Just Google "GM Mode 6". FWIW GM mode 6 been available for many years, although we never used it while working in GM dealership. I suppose it was mostly because GM SI scan info has enough info to get the job done in the dealership environment, where other systems may fall short. Try "Googling" other manufacturers too. There is a wealth of info and more out there

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Anthony Technical Support Specialist
Pennsylvania
Anthony Default
 

Hi Marty: A point of clarification, if you don't mind. To paraphrase SWMBO, GM Mode $06 sucks the Big Woody! While the Enable Criteria (right side of page) is on the same page, Mode $06 (left side of page), itself, isn't what he is looking for. I'm very surprised you weren't using that. Guido

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Martin Instructor
British Columbia
Martin Default
 

Hi Guido. I have always used the information as laid out in the GM SI format, rather than the table format that is published and linked as GM Mode 6. I believe that having the available info at the dealership was never an issue. In 23 years at the dealer, I never once referred to the linked tables. Elsewhere, the same discussion came up years ago and the same consensus amongst the dealership

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Anthony Technical Support Specialist
Pennsylvania
Anthony Default
 

Hi Dmitriy: I pretty much live and die by Code Set Enable Criteria. If I don't know what the module is looking for then I'm just guessing where the problem may lie. Not only do I know what the module is looking for, I know what it is not looking for. That doesn't mean that you can't have a failure in a required parameter and still have a code. It does mean that the code probably happened before

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