I am new to the forum and was hoping someone had some prior posts on my issue....

2004 burb z71 with dual climate control, manual controls, started blowing full heat on passenger side after replacing battery today. I have the system in full cooling, front and rear, but passenger side is in FULL heat mode. I have seen multiple posts on similar issues, but could use some more detailed direction on where to look or how to proceed next given that this happened after the battery swap?

I appreciate any help you guys can provide.

Thank you!

Layne M