Which pcmtuner module to read this ecu ACDELCO E83?
ACDelco GM from Chevy impala etc NOT with PCMtuner.
PCMTuner will not read ACDELCO E83. You will need MPM programmer.
Mpm tool will read the following E83 ECUs
2007 Vectra 2.5, 2.8
2011 Insignia 2.0
2015 Insignia 1.6
Check MPM coverage before operation.