Electronic ignition switch

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. The electronic ignition switch can indeed affect other systems in your Trailblazer, including your blower motor and dash lights. When an ignition switch malfunctions, it might not entirely shut off the electrical circuit when the key is removed, which could keep power running to components like the blower motor or dash lights. This can also lead to battery drain and other electrical issues. Checking the ignition switch or having it tested could reveal whether it's at the root of your problem. 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!