How to: read 4-digit pin code from Cadillac ATS 2016 BCM D70F3558M1 95320 system by using OBDSTAR X300 Pro3/Key Master/X300 DP key programmer via OBD.
Select Vehicles->Immobilizer->GM->gm v31.02->Read security pin code->By OBD->By BCM system
Method 1: Read pin code automatically
Select Auto->communicating->Read password
OBDSTAR X300 Pro3 read 4-digit BCM code success
Method 2: Read pin code manually
Key master detect BCM type
Select correct BCM type and choose Read password
Manually read pin code success.