More than likely the alarm system has locked you out. You will need to have the theft module flashed or reset. You do this with a scan tool from a dealer or shop that has one. The reason this is required is so that the dealership or business can confirm you own the vehicle. I attached the procedure in the event you have access to a scan tool.
Unfortunately, once the alarm is activated, it needs to be disarmed but if the battery was drained and removed then more than likely it has just locked you out. Clearly you need to get this evaluated first because if this is your issue then you can replace everything related and it still will not start.
Let me know if you have questions. Thanks
Sunday, July 28th, 2019 AT 11:00 AM