Need help

Hi, my name is Devin. I am an auto repair expert with the Car Genius team here at RepairPal. I'm sorry to hear you're having trouble with your vehicle. When your Cadillac DTS has power but won't start and the alarm keeps going off, it could be an issue with the vehicle's anti-theft system. The alarm system can sometimes prevent the car from starting if it's triggered or if it isn't disarming correctly. To reset the system, try locking and unlocking the car with the key fob or locking and unlocking the driver's door manually with the key to see if it resets the alarm. If the problem persists, a professional diagnosis may be required. If you need more advice, have any other questions about your vehicle, or would like to get connected to a RepairPal Certified shop near you, we have you covered. Give us a call at 877-913-1554, and we will happily help you out!