We posted this to Tech Talk some time ago, but were never able to find the sound:
http://www.foreforums.com/index.php?topic=25840.msg205479#msg205479
Susan finally nailed it! The offender that was causing the problem was the finger latch on the largest kitchen drawer (in our coach's configuration, the deep drawer under the stove next to the refrigerator). While in route from Las Cruces, NM, to Phoenix, AZ, yesterday she put a small piece of non-skid pad into the latch — the stuff normally used under area rugs, or sometimes as drawer/cabinet liners for breakables.
Magic. No more crickets in the coach. Hoping this helps someone else in the future. There are better long term solutions, of course, like the different type drawer latches Roger Engdahl has shown us. We'll get that far someday. For now, we're just happy to have a quiet ride. :-)