I would suggest you have someone drive your car while you ride shotty and determine were the noises are coming from. Every car is different so the places where you hear creaks and squeaks will be different as well. It could be anything from loose screws, loose glove box hinges, or something that just needs a little duct tape to shut it up. I have a 96 and I hear creaks and squeaks all the time. Its normal for a car to do that as it ages. No biggie for me, just pump up the volume and Im good to go.