MY REAR HEATER BLOWS COLD AIR ONLY FRONT WORKS ...
2004 CADILLAC ESCALADE
My rear heater blows cold air only front works fine the little round looking circle above my head in drivers seat buzzes
Wednesday, January 9th, 2013 AT 2:59 PM
When engine is warm make sure both pipes are hot first if they are it can be an actuator hanging up. But first go to the underhood fuse box and pull the rrhvac fuse for 60 seconds, that may reset the actuator. I have included pic of it on rear heater.