I’m 1 day into receiving my M2, so please be kind
I’m looking for seasoned knowledge on the best way to isolate a packet from module A to B and maybe back again.
I’m have 3 connections Connected in Savvy Can and I’m able to see traffic on the obd port. I also have a high end scanner capable of controlling any module on any GM autos.
I’m wondering if it might be easier to connect M2 to OBD then somehow connect my scanner into the M2 (i have a break out board) and capture the commands i send to the various modules.
Any advice to get me started would be of great value. Thank you in advance!
Vehicle(s) Hence Frankenstein: Is a combination of a 2003 (pre- GMLAN) Hummer H2 that utilizes Class 2, and a 2006 Duramax/Allison utilizing both GMLAN and Class 2.
This is my 5th conversion and I thoroughly understand steps to introduce GMLAN to a vehicle that didn’t have it. All circuits communicate as they should and the H2 is happy with it’s new power plant.
Not to bore you with unnecessary details but background my help. I’m trying out a new build idea and I’ve introduced a new control module from the H2 that has never been used in it’s current configuration along side the duramax/allison computers.
With high end scanning tools i can see the module but i can’t control it. I suspect there is a packet being sent from either the ECM or TCM telling the TC Control module that it’s ok to activate. Maybe a vin code coming from either the ECM or TCM or something else completely. I’m nearly 100% certain it will be sent class 2 Serial and not GMLAN.
Last piece of the project will be to write the missing packet into one of the control modules. Either ECM or TCM. Is this possible?