RE: Driver Side Front Wheel Noise
That's usually the sign of a bad tire. Try driving the van in a smooth parking lot at about 5 MPH. You're testing for a wobble side-to-side action that you can feel in the seat of your pants. If you feel it, have your tires checked for a broken belt or out of round condition.
All calipers have some in/out slop--that's what the caliper slides are for. They even have a slight up/down slop, but it should be consistent on the left and right calipers.
I'm a retired ASE Master/L-1 Technician. I still keep current with the latest automotive technology.