hi guys, first time posting here.

I'm looking to replace my head unit with a single din blue tooth aftermarket unit like an alpine or something. I am also looking at replacing the rear deck 6x9's as i believe they are blown. so my questions are....

what kind of wiring harnesses/trim kit would i need to make sure the steering wheel stuff still works. I dont care about the onstar unless its really easy, and from what im seeing online it might have a factory amp "bose or monsoon" i'm not sure if it has either. I've seen tons of take apart the dash videos to get the stereo out but no one talks about the wiring harness or splicing etc.... needed to put a new one back in or change out the speakers.....

soooooo i'm sure ya'll have done this a thousand times so i appreciate the help!

Thank you!