Most of the time… the majority of our concerns and repair needs force each of us to do our own “retrospective” and look back in time into the history and designs of our vehicles than can go as far back as 25 Years or more involving GM Automotive Designs to solve these problems. But for those of you a whole lot younger than I am (by perhaps more than a Half Century here…) you will all be dealing with what Herbert George Wells coined as “The Shape of Things to Come...” involving some very extreme changes in the designs and hardware of vehicles that; beginning with 2018 and looking far into your futures... will be coming with astonishing speed... putting many these vehicles almost completely out of the reach of even the most accomplished among us to repair.
This topic is not just some abstract thought experiment that I’ve conjured up for you all to consider for my own amusement. I have a very personal, very real and dreadful memory of the awful consequences that came along with the sudden sea change to the Automotive Repair Industry that occurred in the late 1980s to a very close friend of mine. “Jerry L” was a good, solid family man… with a thriving Small Automotive Repair Shop. He was a generous and friendly man who could barely write his own name… but he was capable of putting his gifted hands to the building of powerful engines for Dragster Race Cars and he had a large local clientele of faithful and loving customers in need of Common Auto Repairs that allowed him to support a wife and four children very well for almost two decades.
But then in the late 1980s ... Almost overnight… his customers began to purchase vehicles that were literally “Beyond The Scope” of his abilities to effectively repair. With the loss of revenue from all those paying customers… his life rapidly unraveled to the point where a man who could hardly read had managed to do so well for so long… finally ....saw no way out of his troubles. Sadly… He killed himself in his garage soon thereafter. That was my first introduction into the affect that OBD1 and OBD2 Design Changes would soon have upon the Automotive Industry... and to me The First Casualty to fall in the Age of Electronically Controlled Automobiles.
And so… I would encourage anyone who dwells primarily “in the past” when it comes to their present repair difficulties ...NOT to overlook the next wave of changes that began in 2018 and which will rapidly accelerate over time. Within the phased space of the next decade… The Automotive Industry will not only surpass your expectations about what is coming your way… but will serve to outstrip your abilities to deal with them much sooner than you think. I encourage all who are curious to read the linked White Papers on the various topics of concern and learn and prepare as much as you can before these events to arrive and disrupt your expectations of being able to fix and repair what soon will be the dominant vehicles on our roads and highways. Pay particular attention to the topic of Telematics.
Diagnosing GM Databus Wiring Problems on Modules using a 2003 Chevrolet Silverado as an Example:
http://www.automotivetroubleshootingsecrets.com/automotive_wiring.html
http://www.automotivetroubleshootingsecrets.com/2003_Silverado_dlc_diagram.html
General Motors OBD2 Diagnostics Systems and Equipment:
https://advancedautomotivetraining.com/downloads/OBD II Network Diagnostics State.pdf
High and Low Speed GM Databus Differences:
https://www.gmtruckclub.com/forum/threads/gmlan-data-bus-system.104480/
“It's a Local Area Network; actually, may be considered 2 LANs, a high speed network and a low speed network. The low speed is used for the human to vehicle interface (push a door lock button, the door modules lock the doors). The high speed is for the communications between various vehicle control modules and their sub-modules (powertrain, body control, audio, brakes, etc). Most of the modules have 2 states, "awake" and "asleep". An idle state will induce some modules into the "asleep" mode, while others are commanded into that mode. The modules have battery power when the ignition is off, turning on the ignition commands the modules into the "awake" state. Things like the Retain Power feature, are software controlled; these modules stay "awake" for a defined time after the ignition is switched off. At the end of the defined period, the BCM (I think it's the BCM) commands these modules to sleep.
White Paper on Automotive Security Issues:
https://www.nxp.com/files-static/automotive/doc/white_paper/AUTOSECURITYWP.pdf
Telematics: How Access to Telematic Information Data-Streams will affect access by Vehicle Owners in the Near Term and Distant Future:
http://aftermarkettelematics.org/wp...cs-Data-Definition-White-Paper-12-10-copy.pdf
Automotive Component Changes Anticipated in the Near to Distant Future:
https://www.etools.org/resources/Documents/Marketing/Market Research/ETI White Paper - Final Presentation 4-6-17.pdf
OBD2 and CAN-BUS differences explained
http://www.oneminuteinfo.com/2014/02/can-bus-obd-ii-explained-for-dummies.html
This topic is not just some abstract thought experiment that I’ve conjured up for you all to consider for my own amusement. I have a very personal, very real and dreadful memory of the awful consequences that came along with the sudden sea change to the Automotive Repair Industry that occurred in the late 1980s to a very close friend of mine. “Jerry L” was a good, solid family man… with a thriving Small Automotive Repair Shop. He was a generous and friendly man who could barely write his own name… but he was capable of putting his gifted hands to the building of powerful engines for Dragster Race Cars and he had a large local clientele of faithful and loving customers in need of Common Auto Repairs that allowed him to support a wife and four children very well for almost two decades.
But then in the late 1980s ... Almost overnight… his customers began to purchase vehicles that were literally “Beyond The Scope” of his abilities to effectively repair. With the loss of revenue from all those paying customers… his life rapidly unraveled to the point where a man who could hardly read had managed to do so well for so long… finally ....saw no way out of his troubles. Sadly… He killed himself in his garage soon thereafter. That was my first introduction into the affect that OBD1 and OBD2 Design Changes would soon have upon the Automotive Industry... and to me The First Casualty to fall in the Age of Electronically Controlled Automobiles.
And so… I would encourage anyone who dwells primarily “in the past” when it comes to their present repair difficulties ...NOT to overlook the next wave of changes that began in 2018 and which will rapidly accelerate over time. Within the phased space of the next decade… The Automotive Industry will not only surpass your expectations about what is coming your way… but will serve to outstrip your abilities to deal with them much sooner than you think. I encourage all who are curious to read the linked White Papers on the various topics of concern and learn and prepare as much as you can before these events to arrive and disrupt your expectations of being able to fix and repair what soon will be the dominant vehicles on our roads and highways. Pay particular attention to the topic of Telematics.
Diagnosing GM Databus Wiring Problems on Modules using a 2003 Chevrolet Silverado as an Example:
http://www.automotivetroubleshootingsecrets.com/automotive_wiring.html
http://www.automotivetroubleshootingsecrets.com/2003_Silverado_dlc_diagram.html
General Motors OBD2 Diagnostics Systems and Equipment:
https://advancedautomotivetraining.com/downloads/OBD II Network Diagnostics State.pdf
High and Low Speed GM Databus Differences:
https://www.gmtruckclub.com/forum/threads/gmlan-data-bus-system.104480/
“It's a Local Area Network; actually, may be considered 2 LANs, a high speed network and a low speed network. The low speed is used for the human to vehicle interface (push a door lock button, the door modules lock the doors). The high speed is for the communications between various vehicle control modules and their sub-modules (powertrain, body control, audio, brakes, etc). Most of the modules have 2 states, "awake" and "asleep". An idle state will induce some modules into the "asleep" mode, while others are commanded into that mode. The modules have battery power when the ignition is off, turning on the ignition commands the modules into the "awake" state. Things like the Retain Power feature, are software controlled; these modules stay "awake" for a defined time after the ignition is switched off. At the end of the defined period, the BCM (I think it's the BCM) commands these modules to sleep.
White Paper on Automotive Security Issues:
https://www.nxp.com/files-static/automotive/doc/white_paper/AUTOSECURITYWP.pdf
Telematics: How Access to Telematic Information Data-Streams will affect access by Vehicle Owners in the Near Term and Distant Future:
http://aftermarkettelematics.org/wp...cs-Data-Definition-White-Paper-12-10-copy.pdf
Automotive Component Changes Anticipated in the Near to Distant Future:
https://www.etools.org/resources/Documents/Marketing/Market Research/ETI White Paper - Final Presentation 4-6-17.pdf
OBD2 and CAN-BUS differences explained
http://www.oneminuteinfo.com/2014/02/can-bus-obd-ii-explained-for-dummies.html
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