Conditions for Setting the DTC
WARNING: This page is about a different car, the 2019 Chevrolet Malibu. However, it is still accessible from the selected car via links, so may be relevant.
B270A 01
M7 Transmission Shift Lock Control Solenoid ActuatorControl Circuit=Short to Battery - For greater than 60 s
B270A 02
M7 Transmission Shift Lock Control Solenoid ActuatorControl Circuit=Short to Ground - For greater than 60 s