Quick question. The temp has read -40 a few times today and then has really been all over the place. I know this is a symptom of a faulty ambient air temp sensor. However, my pass mirror adjustment is not working either. Do you think there could be a power issue? I have the new temp sensor coming in today. My AC has been intermittent for two months. truck was bought in September but the service times are so long I won't wait a week.