Changed the ignition switch and the vehicle won’t start

Hi, my name is Devin. I am an auto repair expert with the Car Genius team here at RepairPal. So sorry to hear you're having trouble with your vehicle. If your Escalade won't start after changing the ignition switch, and some electrical components are working while others aren't, it could be due to a few different issues. First, ensure that all connections to the new ignition switch are secure and correctly installed. A loose connection or improper wiring can prevent the vehicle from starting or cause certain systems to malfunction. Another possibility is that the vehicle's security system (Passlock) is preventing it from starting. The system might not recognize the new ignition switch, which could trigger the anti-theft feature. You may need to perform a Passlock relearn procedure to sync the new switch with the vehicle's computer. Finally, check the battery and fuses, as the power distribution could be affected during the ignition switch replacement. Ensure that all fuses related to the ignition and essential systems are intact. 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!