I recently bought a 2023 suburban with only one key. The auto start/stop worked normally. I went to a Chevy dealer and bought an another key and had them program it. I noticed the start/stop did not work when I drove it home. I kept using the same key and the start/stop did not engage again. I used the other key today and the auto start/stop worked again. I did press the start/stop button to turn it on and off multiple times using the first key. Nothing happened. I am going to contact the dealer but I thought I would ask here if anyone has heard of this before.
