please explain
It uses a different wires in the obd2 connector because the protocol changed from serial single wire data bus to CAN bus about 2005. Can bus for GM buss pin 6 and 14 for data.
Last edited by aknovaman; Apr 12, 2014 at 05:24 PM.
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Thanks for that, don't understand a word of it but glad you have explained why.
Just another thought, on ebay there are hundreds of OBD2 scan tools which do not differentiate between which year they serve, how can this be?
Just another thought, on ebay there are hundreds of OBD2 scan tools which do not differentiate between which year they serve, how can this be?
Scanners read the data from all the available pins, finds and active one and then sends commands to see what language it is speaking. Once the scanner determines the language, it then reads the data and trouble codes appropriately. OBd is a standardized language but has been revised over the years plus there are some commands that are OEM MFG specific. So they work with GM but ford is different from imports, etc.
