Sooooo Cold , 2.3 R plate Galaxy with climate control , (LCD) heaters used to work fine now just cold , ive looked through other threads and most mention matrix problems , not the case with mine both matrix pipes get red hot , so I'm guessing it is electrical / cables or whatever control the flaps . When it was working I could hear the flaps changing position ie switching from Lo / High setting i would hear the flaps change , this no longer happens , still have hot air in the back blowing but I cant drive the car from the back :) Any ideas please ? Is there a relay that controls flaps