No rear driver side brake light tail light or blinker

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. It sounds like you might have a blown fuse or a bad ground connection on your Blazer. The "pop" you heard could have been a fuse blowing. I would start by checking the fuse box for any blown fuses related to the tail lights or turn signals. Keep in mind that fuses don't usually just blow, so you may be dealing with a short somewhere in the circuit. If the fuses are good, inspect the wiring and connectors at the rear of the vehicle, especially on the driver's side, for any signs of damage, corrosion, or a bad ground connection. Keep in mind that fuses don't usually just blow, so you may be dealing with a short somewhere in the circuit 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!