KMeloney
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They did design it that way, and the dealer can't do anything about it. There is no way for GM to disable DFM. You weren't getting the run-around.
DFM disabler released
- Thread starter 66 Galaxie
- Start date
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Marky Dissod
Full Access Member
This is like asking the Joker to not use Jokervenom, on camera.
The Joker's entire raison d'etre requires using it, or at the very least to ignore pleas to NOT use it.
GM pays everyone that works for GM to NOT disable AFM / DFM Also,
GM pays everyone that works for GM to not even speak against AFM / DFM in public.
Fairweatherider
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I finally made it through all 33 pages. Very helpful knowledge in here.
BTW, what is a “global B” motor? Saw several references to that.
BTW, what is a “global B” motor? Saw several references to that.
Global B electrical architecture started on the T1 Suburban/Tahoe, Yukon and Escalade for the 2021 and newer models. I think the T1 pickups started somewhere around 2022. The GM diagnostic tool for the Global B use the MDI 2. I am not sure what aftermarket scanners will work on these vehicles.
The MDI 2 interface is only really needed for module programming, sure with the right license/subscription, software and computer you can read codes, clear codes and run bi-directional tests, but the main reason for the MDI 2 is module programming and this requires all the licensing, subscriptions and access to the data files, not something the average DIYer can afford and needs. OBDII tools still work fine and will query most OBDII modes, generic data and codes, manufaturer specific data and codes, if supported ABS, Airbags, EPB (Electronic Parking Brake) and other modules to include bi-directional data and service resets depending on the advanced level of the tool.
A $10 phone App and $20-$40 OBDII interface can read standard OBDII codes and clear codes, display live data and Emission Readiness Monitor status. The issue is GM has one of the highest licensing fees for Extended OBDII data support so the folks offering powerful phone/tablet Apps for under $20 cannot really afford to purchase the GM license. Additionally even if these App providers purchase the GM license, if they stop subscribing to the GM license, even though they have written all the code to support the GM specific data, they are required by the terms of the licensing agreement to delete all the GM specific coding and support they offered. Kind of a tight line the App developers need to walk, if they do not charge enough to support the GM licensing costs and have enough App purchasers it does not make financial sense for the smaller guys. The big name tool suppliers do offer this, but you have to pay 4 figures for the tool up front and pay 3 to 4 figures annually for updates and subscribtions.
The average DIYer and smaller shop really have no need for a MDI 2 interface due to the requirement for expensive software subscriptions and access to software updates for module programming and so forth. These vehicles are just now catching up with many of the higher end European models that for years had to have most modules "coded/programmed" with the VIN and vehicle options as well as the lastest updated software/firmware.
Over 10 years ago, I was at a BMW dealer that had a bunch of parking spaces behing the dealership up against the building. All of these parking spaces had power outlets and Ethernect connections build into the building. There would be half a dozen or more cars parked in these spots with the hood up, higher current battery maintainers on the vehicles and a box that was connected to the Ethernet port and the OBDII port. These were then connected to BMW Support for troubleshooting and module updating. Typically there were not Techs around as all of this work was being performed remotely. Kind of a crazy situations, but modern vehicles have way too many computers, modules, data storage devices, cameras, sensors and electronics, some even had multiple data busses as well as fiber option data links. When the batteries get weak or the alternators have problems in these newer vehicles, data between modules gets corrupt and the modules just start going offline. Some even go offline as a form of triage to try to keep the engine running so you can get the vehicle pulled off somewhere safe before the entire monster shuts down.
A $10 phone App and $20-$40 OBDII interface can read standard OBDII codes and clear codes, display live data and Emission Readiness Monitor status. The issue is GM has one of the highest licensing fees for Extended OBDII data support so the folks offering powerful phone/tablet Apps for under $20 cannot really afford to purchase the GM license. Additionally even if these App providers purchase the GM license, if they stop subscribing to the GM license, even though they have written all the code to support the GM specific data, they are required by the terms of the licensing agreement to delete all the GM specific coding and support they offered. Kind of a tight line the App developers need to walk, if they do not charge enough to support the GM licensing costs and have enough App purchasers it does not make financial sense for the smaller guys. The big name tool suppliers do offer this, but you have to pay 4 figures for the tool up front and pay 3 to 4 figures annually for updates and subscribtions.
The average DIYer and smaller shop really have no need for a MDI 2 interface due to the requirement for expensive software subscriptions and access to software updates for module programming and so forth. These vehicles are just now catching up with many of the higher end European models that for years had to have most modules "coded/programmed" with the VIN and vehicle options as well as the lastest updated software/firmware.
Over 10 years ago, I was at a BMW dealer that had a bunch of parking spaces behing the dealership up against the building. All of these parking spaces had power outlets and Ethernect connections build into the building. There would be half a dozen or more cars parked in these spots with the hood up, higher current battery maintainers on the vehicles and a box that was connected to the Ethernet port and the OBDII port. These were then connected to BMW Support for troubleshooting and module updating. Typically there were not Techs around as all of this work was being performed remotely. Kind of a crazy situations, but modern vehicles have way too many computers, modules, data storage devices, cameras, sensors and electronics, some even had multiple data busses as well as fiber option data links. When the batteries get weak or the alternators have problems in these newer vehicles, data between modules gets corrupt and the modules just start going offline. Some even go offline as a form of triage to try to keep the engine running so you can get the vehicle pulled off somewhere safe before the entire monster shuts down.
Marky Dissod
Full Access Member
So, our cars are becoming more like John Deere, then? Disappointing.
@Marky Dissod
Luckily it is not going to be as bad a John Deere. OBD will be around a long time, not sure if there will be an OBDIII at some point? But there needs to be a way everyone can at least get an idea of what is going on with basic functions of the vehicles.
As for other higher level things, yes, it makes sense to take the vehicle to the dealer due to the support required to flash modules and make more advance "technology" related repairs.
Unfortunately with all the computerization this is just the way the industry is heading for some of the repairs. One of the problems with all the "technology" some of it is obsolete within 3-4 years or at least did not have enough processing power and RAM to support more advanced updates. I expect SuperCruise to be falling behind in year 4 or 5. I have no interest in someone writing software for my vehicle to operate on the highway that takes public transportation or rides a bike! I have seen too many instances where some sort of self driving cannot expect the unexpected.
I had a guy on the highway pass me in a pickup truck with a 10-12 foot step ladder hanging over the top of the tailgate. Just as I finished my thought that everything gets sucked out of the back of pickups at highway speeds, the ladder caught air and flipped out of the truck, I was immediatey in defensive mode moving into the shoulder and slowing quickly. Luckily the ladder stayed in his lane and did not flip. This weekend I was on the highway in the left lane and as I drive looking both close and far ahead, saw something in the left lane, moved to the right lane and increased the gap from vehicles in front of me. What was in the left lane, a bumper cover that had fallen off someones car! You just cannot make this stuff up and it happens all the time.
Maybe the best options are the way of the "Retomod", a 1970 car or truck with updated suspentions and a BT head unit with a port fuel injected V8 that you can tweak with your laptop! Something that most people can work on with a basic level of experience.
Luckily it is not going to be as bad a John Deere. OBD will be around a long time, not sure if there will be an OBDIII at some point? But there needs to be a way everyone can at least get an idea of what is going on with basic functions of the vehicles.
As for other higher level things, yes, it makes sense to take the vehicle to the dealer due to the support required to flash modules and make more advance "technology" related repairs.
Unfortunately with all the computerization this is just the way the industry is heading for some of the repairs. One of the problems with all the "technology" some of it is obsolete within 3-4 years or at least did not have enough processing power and RAM to support more advanced updates. I expect SuperCruise to be falling behind in year 4 or 5. I have no interest in someone writing software for my vehicle to operate on the highway that takes public transportation or rides a bike! I have seen too many instances where some sort of self driving cannot expect the unexpected.
I had a guy on the highway pass me in a pickup truck with a 10-12 foot step ladder hanging over the top of the tailgate. Just as I finished my thought that everything gets sucked out of the back of pickups at highway speeds, the ladder caught air and flipped out of the truck, I was immediatey in defensive mode moving into the shoulder and slowing quickly. Luckily the ladder stayed in his lane and did not flip. This weekend I was on the highway in the left lane and as I drive looking both close and far ahead, saw something in the left lane, moved to the right lane and increased the gap from vehicles in front of me. What was in the left lane, a bumper cover that had fallen off someones car! You just cannot make this stuff up and it happens all the time.
Maybe the best options are the way of the "Retomod", a 1970 car or truck with updated suspentions and a BT head unit with a port fuel injected V8 that you can tweak with your laptop! Something that most people can work on with a basic level of experience.
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