Had this truck 3 days when I started it up during summer and the outside temp showed -40 degrees when it was 90. Needless to say the auto climate started blowing heat! Turned off the outside temp for 15 minutes and then back on 10 minutes later alls well. Yesterday it did it again and this time I tried to use the AC manually. Still blew hot air and ac wouldn't turn on. After several tries starting the truck again all is well?? Temp reads fine and AC blows cold. Could I have a faulty module for the system?