I finally checked my filter and drained the non-existent water from the bottom. (just a little humor, I was looking to see how clean the fuel was and if there was any water in the fuel.)
It took me all of about 3 minutes to remove the fender well, because I knew that I would be down there I cleaned the area the day before. I could have washed it the day of and just moved the truck to a new location so I wouldn't get wet/muddy. I do realize most of the posters here are not in sunny so. florida, so this is not an option.
I thought of removing the intake (and now the battery) but I actually thought I had more of a chance of messing things up - going from top-side.
I guess there multiple ways to skin the cat - er. Duramax...