Why is my car not starting up normally and acts like it’s possessed?

What is your question?

When turning the keys I can hear a clicking sound but car won’t start. I changed the battery and alternator both reading at normal charge. Starts up perfectly when jump started so I don’t know what it could be. Also the stereo will suddenly shut of or start blinking the lights on it own. Makes a loud noise on the stereo when putting the blinkers on once in a while. I have noticed this happen more when i wash the car ir it rains.please help I’d greatly appreciate it! Thank you.

What makes this problem better or worse?

When it gets wet

How long has your 2014 Chevrolet Camaro had this problem?

4 months