Sure it's not the gas tank? Mine sounds horrible with the squeaking at low speeds and going over bumps. I haven't had time to drop the tank just yet but I'm curious to see what the hell is causing the noise. I know its the tank because I went under it and started banging on things. The tank was the culprit.

 

I had a severe case of the creaks whenever I turned left or right or went over bumps.
At first I went over 4 to 6 joints in the front end with WD-40. There was little improvement so I considered taking it to the dealer. The next day I decided to go over everything and I mean everything. I got on my back under the H3 and discovered joints I had missed under the front end.
Upon standing and looking down between the tires and wheel wells I sprayed the shock joints bottom and upward toward the tops even though i could not visibly see the joints. I found other joints in the area too. Next I took care of the rear shocks (even up into all of the shock covers) and even the leaf supports and any and all else. I am here to say all creaks and squeeks are GONE and I am glad I did not give up after the first try.