Detail: The front heat works fine. The back heat is not working. It is blowing out cold air. Is there a fuse that I could check for that?
Solution: THE PROBLEM IS NOT A FUSE, IT IS THE REAR SEAT AIR TEMPERATURE CONTROL BLEND DOOR THAT IS CAUSING THE PROBLEM. , Hi, a 6ya Mechanic can help you resolve that issue over the phone in a minute or two. Best thing about this new service is that you are never placed on hold and get to talk to real repair professionals here in the US. click here to Talk to a Mechanic (only for users in the US for now) and get all the help you need. Goodluck! , as long as all the fuses are good.. its probably the blower resistor/module... located next to the blower motor under the pass. side of the dash.. , My 04 tahoe had to have the a/c door actuator replaced as well, same problem. 100.00 part from dealer if you want to do it yourself.