suburban starter and rear heat trouble

I have a 93 suburban that has a new battery and will not even turn over I think it is a loose connection on the starter but I can't figure out how to remove the starter to fix the problem does anyone know how to remove the starter it has a sheild by it and I can't even tilt the starter. Also it has front and rear heat and the front blows hot but the rear blows cold air any suggestions would really help Thanks