Hi everybody and happy New year. My 01 Blazer recirculation button on CCC is acting up. It used to be that once pressed the yellow indicator lighted up and stays on. Since recently when I hit it, it blinks several times and goes off. I do not find a similar situation thread in Forum and decided to start this new thread. Hope for any sensible/knowledgeable responses in kind and thanx in advance. Perhaps, am I doing something wrong??? As it is below 10deg. outside, I have the temp set to 25deg. I have heat with no problem too. Just worried thinking perhaps the recirc door is not operational.