help im trying to get my stock stereo out of my car and i have no idea how to do that can anyone help me with that

it should just be held in with a few screws and usually the gm stock radios are simply attached with a wiring harness you unplug, however if you are planning on installing an aftermarket stereo in its place I would suggest taking it to a professional installer. It has been my observation that whenever someone starts tampering with the wiring on a new car it causes more problems than it solves. you may also want to check on how that may affect your warranty.