1-if this is the first time this happened?
lets try the below reset ,in case it will reset the modules
2-but a diagnostic scan is needed to retrieve fault codes ?
3- is there red security light flashing on the dash while you trying to start ?
4- do you have one or 2 keys for it ?
5- and battery does have 12 volts, checked with voltmeter, while you trying to start with key & key is in the start position and measuring voltage at battery
Master reset Procedure
1- Disconnect Battery Cables ( Negative & Positive Cables )
2- Hold cables Together for 60 secs ,then let go
3- Wait 15 minutes
4- Make sure all doors are closed
5- Reconnect battery Cables
6- Lock & unlock the vehicles using the key from driver door side (if you have a key fob with no blade key, just lock & unlock using the key fob buttons)
7- Enter the vehicle and attempt to start
Please let me know
ASE Certified Technician