replacing brake caliper

:banghead: i have a 2001 chevy blazer and i need to replace the brake caliper on my left back tire but im not sure how if anyone knows how please reply :banghead:

should be easy enough just undo the bolts, unhook the line, install the new one and bleed the system. whats wrong with the old one???? is it sticking and burning up pads?? if so the rubber hose is probably swollen and not relieving pressure, or the pins are seized.