I've got a 95 Yukon. The heater/AC fan controls have stopped working. I took off the door actuator, controls the flow of air(defrost, heater, vent, etc.), and checked for power to that. Very little power. Also, my AC won't kick on anymore. I've put the truck in a heated garage to make sure it's over 45 degrees with nothing from the AC. Is this a relay problem, circuit board or what? ANY insight would be helpful. Thanks.
Steve
Steve