Flash: Drivetrain Control Module (DTCM) C2020-01 ECU Internal Fault setting in the
DTCM
This bulletin involves reprogramming the Drivetrain Control Module (DTCM) with the latest
available software.
Some vehicles may experience the All Wheel Drive Light (AWD) illuminating due to DTC
C2020-01 ECU Internal Fault setting erroneously in the DTCM.
