Conditions for Running the DTC
WARNING: This page is about a different car, the 2016 GMC Acadia, 2016 Chevrolet Traverse, and 2016 Buick Enclave. However, it is still accessible from the selected car via links, so may be relevant.
P2534
The TCM ignition voltage signal is valid, with the ignition ON.
P2535
The TCM ignition voltage signal is valid, with the ignition OFF.