Hello! I am new to this forum so here it goes! I have a 2004 sierra 1500 4x4, base model with floor lever transfer case,a while back my blower motor quit,(dual climate control) and now the acuator wont engage in the front axle I back probed the fuse box and found the heater fuse as well as the 4x4 fuse have no power to them, when i apply 12volts to either dead fuse the blower works and the actuator operates but are hot all of the time! Are the blower and 4x4 both operated by the body control module PLEASE HELP!! Thanks!