I've recently been gifted a 2000 Honda Civic Ex and drove it from Arizona to Colorado. Mind you, this car was in perfect working order and pretty clean with over 128,000 miles on it (my grandma took incredible car of it). She informed me that she had everything that needed to be fixed or replaced, well, fixed and replaced. But all of a sudden, maybe a month ago, there was this strange creak that would occur whenever I was turning or bouncing. My immediate thought was of course the suspension, so I rock the car a bit and realize the sound only happens when the rear is pushed down, however not when it is pushed side to side. Now I don't know much of anything about cars, but I could tell the suspension was reasonably new. I've tried jacking the car up and shaking the wheels but alas, no creak. I want to get under there and take a good look, but I don't own the jacks that allow you to fully lift your car. It may have been the switch from hot to cold weather, or maybe a safety driving course I took which was a little hard on the car, but other than that I haven't got a clue.