Air Conditioner problems of the 2013 Chevrolet Camaro

My main issue when I shut the car off, I heard a loud pop coming from my speakers. . My boyfriend was in the passenger seat and the air bag light kept changing from on to off when the car is started, I get no seat belt chime and the stereo flashes rapidly and goes black and the heater fan comes on and off I turned on my turn signal and noticed a loud static noise every time, I turned the turn signal on. Still no safety belt chime, stereo and now the turn signals make no sound when on. (11/05/2018) as I started my car this morning the stereo was flashing along with the lights around the heater controls and the fan working intermittently for about 10 seconds and the screen on the radio went black and hasn't come back on. The heater fan comes on for 2 to 3 seconds and shuts off for 2 to 3 seconds. This occurs continuously until I shut the car off. Every time I start it the same things are happening. When I shut the car off, I can hear a buzzing coming from somewhere in the dash that lasts about 5 to 7 seconds and then stops for 5 to 7 seconds. This will continue for approximately 5 minutes. It doesn't do it every time. (11/07/2018) while driving home from work today the trunk open light came on, so I pulled over and went to the rear of my car and it was not open. I pushed the trunk open button on the door panel and the fob several times and it wouldn't open the trunk. I got back in to the car and continued home and the light went off and I was able to open the trunk when I got home. So as of today, 11/13/2018 the infotainment system won't come on, the fan for the heater/air conditioning comes on and off continuously. The turn signals flash but have no sound, seat belt chime does not work, passenger air bag light comes on and off randomly, the trunk lid open light randomly comes on.