2018 Suburban with start button

[Trooper]

I have a 2018 suburban that I recently purchased. We have not drove it for 4 weeks. I went to go start it and it just clicked. It has one of those passive start button. The battery is good and all the lights are bright and working. I am looking for help before I journey to the dealer with it

 

[zora]

Have you actually measured the battery voltage.
The starter takes a lot more power than the lights.
After 4 weeks it is quite possible you have a battery not capable of engaging the starter.