I've been trying to determine an issue that began when the cabin blower fan in my 2018 Chevy Equinox with an automatic HVAC system quit working.

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 Equinox. It's possible that there is a problem with the control panel, but I would recommend checking some easier things first. Since the fan works intermittently when unplugged and reconnected, I’d check the wiring harness for loose connections or corrosion. I also wouldn't rule out the possibility that the new fan is defective. If the problem persists, it may be a good idea to consult a local repair shop that has a scan tool with the capability to communicate with the HVAC system to see if any fault codes are stored. 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!