Audio in for 2001 Chevy suburban?

I have a Chevy 2001 suburban with a stock stereo system and radio. I've noticed an auxiliary button along with cd and wondered if there's a way to wire an audio in Jack. I just want to play music from my iPhone (already have radio transmitter, not happy with quality). If there's a simply way, please let me know, nothing too technical, a few basic connections at most, I have wire and a soldering iron, as well as audio jacks. I'm too lazy to get into a deep online search lol.

Your best bet here is to get a look at the back of the stereo system. Input jacks for auxiliary devices will be located there most likely. It could be labeled as "Aux." or maybe "Line In". If you have a jack that will fit this, solder it on, plug it in and try it out.

Note: When dealing with audio jacks, the positive wire usually goes to the tip of the jack. Orient the same wire on the tips of both jacks and then the other wire on the remaining leads. You should be golden.

That's the best advice I can give you.