Problem:
It’s a Silverado 2018 with ACDelco E41 ECM.
Magic Motorsport Flex programmer can’t connect the ECU by obd bench.
Any other suggestions?
Solution:
Need to unlock first via bench, tool will write a file direct to ecu, after finish can read file.
E41 not enough VR files for public release.
Hp tuners only solution for now.
Use a different tool -hptuner.