My car has been creaking and popping while driving. When car is in park I can push it forward and back and it reproduces the sound. I also can bounce he car and it makes it also. Shocks are 2 years old as well are the leaf springs. I have added a rear sway bar about 3 months ago. Sound started about 1 month ago. Any ideas. Thanks
Maybe u-joints? Or something with the rear suspension. Try having someone bounce the car while you search with a vacuum line. Use the line like a stethoscope, probing joints and pivot points with one end and the other end held up to your ear. You can also bounce the car and spray bushings/etc with silicon spray. When the noise suddently stops, you found the source. Good luck!
Check where the sway bar is mounted to the frame rails...You may some fatigue cracking starting at the mount points...
Hate to jump to front suspension when you think it is rear. But it is common for front upper joints to make noise. Hit them with a grease gun and see if the noise goes away.