I've tried to search though the forums for a possible solution, but there are so many returns for "popping" noise that it's impossible. I have an 03 4x4, and it has always had a slight popping noise from the rear during low speeds, <40mph. I've taken it to the dealer and they 'can't reproduce' the problem. Lately it has gotten worse and I can hear it almost all the time. I'm pretty sure it is coming from the right rear tire. What should I have them check?

Thanks,
rwba