1) WELCOME to the TDR.
2) Cummins, not Cummings... Cummings is a roofing company where I live, and the ISB CUMMINS is the motor under your hood.
3) Chirp is normal with stock fan belt... if you want to get rid of the chirp, buy a Gatorback belt... personally, I like it.
4) Steering wander has been found to come from two main things... sideload on the output shaft of the steering box, and worn trackbars. I'd say w/ 85k on the truck that your trackbar is shot. Currently I have a group buy deal set up for the DT Trackbar for a small discount over normal cost.
5) Use the search function to find out all you ever wanted to read about the DT Trackbar, or the Napa Trackbar, or Luke's Links (I think that's what they're called).
Again, welcome, and BOMBs away... it's a slippery slope once you start, so watch that first step.
Josh