Conditions for Running the DTC
WARNING: This page is about a different car, the 2019 Buick Cascada, 2018 Buick Cascada, and 2017 Buick Cascada. However, it is still accessible from the selected car via links, so may be relevant.
P0601, P0604
Transmission Control Module = Wake-Up - Active
Frequency the DTC runs = Continuously - After the running conditions are met
P0602, P0603
Transmission Control Module = Powering Up
Frequency the DTC runs = Continuously - During control module power up
P062F
Transmission Control Module = Powering Down
Frequency the DTC runs = Continuously - During control module power down