03 trailblazer wont start...I hear the bendex kicking but nothing else...tested the battery..good and starter good. unhooked the alternator and tried but nothing again..The battery gets real hot when trying to start...any suggestions on where else to look

Welcome to AF, if the bendix engages and no crank, I would load test the battery, if ok, go into the staryer. Of course check grounds and cable connections first.