2011 GMC Yukon Blowing hot on one side/cold on the other

[gsr8981]

I have started up the vehicle after I had a bad battery. I tried the a/c and it blew hot on the driver's side and cold on the other immediately when I started the car. I cannot find the HVAC or heater fuse. I pulled all the other fuses which I thought were related to try to reset them. When I started the vehicle, the hot and cold sides switched. Now I am reading about a battery reset procedure. What is that procedure? Is there a specific fuse for the heater in the 2011 GMC Yukon Denali?

 

[Joseph Garcia]

Welcome to the Forum from NH.

Lots of knowledgeable folks here who freely share their knowledge, experiences, and perspectives. Knowledge is power.

I hope that you will become a participating member in the Forum's discussions.

Pics of the truck, please.

My first thought is that you have a blend door malfunction issue, but @swathdiver is much more familiar with blend door issues than I am, and he will chime in with his thoughts and perspectives.