Printable View
have a 2017 6l80 with 2014 ecu have had it running wont start now. had issues with electronic throttle control.never seemed to be right as of driving.have communication between modules ecu os is 12663390 an tcm is 24276638.what would be cheapest an best way get these to be compatible?
Do you have any error codes in ether the pcm or tcm?
What vehicles are both out of?
no codes of communication u codes p2127 acceleratal pedal app e high 182e witch is tranny an 1915 witch is dont indicate park neutral during start. i forgotthe selector switch when i converted the 2018 6l80 4x4 to 4x2 an ecm is 14 i think os for tranny 24276638 an 12663390 for ecu.has ran just never right takes long time rev up an just a pouch.oh somtimes it had dtc somtimes not real mistery?
Your TCM OS is to new. You'll need to use TCM OS 24270599 from a 2014-16 6l80e so the TCM can communicate with your 2014 ECM. In 2017 GM switched to an E92A and used a new TCM OS for 2017+ T43 TCMs. I've ran into similar issues when we tried using a new TCM with an older E92 ECM and vice versa. You can reprogram the TCM with an Older OS but you'll need access to GM software to reprogram your TCM since VCM Editor will not properly reflash all the OS's in the TCM file.
Alternatively, you can source a 2017 E92A that was from a similar 6L80e vehicle.
kgraves. Do you know of a "cheat sheet" of the ECM/TCM 's and the years/engine/trans they go into? As in E92A or 411 etc.
I havent found any one list online. Just bits of info from all around and talking with different tuners we work with. Seems that every couple of years GM likes to change just enough in the programming to give us a headache.Quote:
Originally Posted by TheMechanic
the emc tmc does communicate iam having other issues now an just bypassed the tcm for now my o2 sensors are pegged at 1200mv