GM Global B Architecture
You have most likely heard about GM Global A vehicles, especially when talking scan tools. You may have heard about Global B. This isn't that in-depth, but it's a quick read about where manufacturers, and in this case GM, are going to position for the future. Some interesting numbers for speeds and volume of information.
Just when one thinks they are getting used to the Global A system, here comes Global B. I am sure there are improvements for the consumer but it sounds like our jobs are going to get more complicated. Of course that comes with a big raise, right?
Cool stuff! I would like to see the 100,000-sq.ft validation lab and that robot that mashes buttons and controls.
GM calls it "Next Generation Digital Vehicle Platform"... gm-techlink.com/?p=12167
Programming is now done with all doors closed and the ignition off. With this new process, the Serial Data Gateway Module can wake up a specific module for programming with no other information on the bus, which also promotes faster programming. That is also interesting! Makes a lot of sense to me.
Interesting performance numbers on bandwidth, 4.5TB/Hr... Here are my notes on what Tesla’s capabilities are:
It's kind of funny that GM advertises their transmission speeds by the hour. That just seems wrong. So Tesla can move 120TB of data in the same time GM can move 4.5? Looks like their next generation is still behind the curve.
Actually, Scott's post says 2 terabytes per SECOND, while the GM data rate is 4.5 terabytes per HOUR. That means the Tesla rate is 7,200 terabytes per hour or 1,600 times faster than Global B.
Good catch. I converted to minutes but forgot to convert to hours. That's an incredible difference in speed.
Yup, I can't imagine having an issue pro/re-programming using a J-tool hooked up to CAN-C. Nah, what could possibly go wrong? (Granted, N/A for Tesla but still applicable to other makes.) Guido