Just picked up a '22 CT5-V (replaced a 2019 CTS), and was looking for some recommendations for SD cards to use for the 2 card slots (PDR and surround camera).
Makes sense. I hadn't really noticed that the message was no longer appearing.There is a message that comes on the display screen when you start the car that recording is beginning. If you don't see that message it is time to reformat the card, which is an option in the PDR function. If you want to keep the data, by all means swap out the card with a blank.
PS: part of the PDR function is to collect data regarding "G" forces, acceleration and braking while on a course. I did find that the drivers display on the left can show the "G" forces while cornering on normal driving. Would anyone know what the max "G" force would be before going into a skid?