hello all. Am new here and been a owner of many z71’s. I have a issue I hope someone can help with. I have a 05 GMC Sierra z71. The battery had to be replaced and everything works as it should EXCEPT the heat on passenger side won’t blow cold when slide it down on cold. No matter what setting I use it won’t change from heat to cool and it’s only the passenger side. I’ve done all the recalibration steps listed on many sites. Even the sparkys one. Nothing helps. Any new ideas on how to get the cold to work again? Thanks in advance for any help.