RE: Fuel gauge problem
I've seen others post this problem in the past, read about it in car articles, and I had it happen on my '00 DHS. It's the sender in the tank, and it's about $600 bucks, plus or minus a hundred, to have it fixed. I've heard two theoriesfor this problem: one, that they're made of cheaper metal coating (than on ultra-expensive cars) and two, there's something in the gas these days that coats them. I read that an occasional bottle of Chevron Techron (the bottled kind; the kind in their gas is supposedly not strong enough or not the same formulation) might de-gunk it and make it accurate again. My old Dodge truck has had this problem for years.
It's cheaper to write down the mileage at each fillup and approximate when to top off again, but I had mine fixed good as new...for a price.