Recently had speakers installed and now only my defroster works no matter what setting. I checked some other car forums and this may happen from disconnecting the battery. How do you recalibrate the hvac? I checked the 30 Amp fuses under the hood and the under dash fuses inside the car all look good. Am I checking the wrong fuses?

 

BUMP anyone have this issue?

 

Remove the HVAC nobs behind them there are two phillips screws, take them off. You can then remove the trim around the radio. Once behind there check to make sure all the plugs are fully seated into the back of your hvac controls.

 

Thank you will try this!