DeCaff2007
I'm Awesome
.....wait til you have to troubleshoot/repair a GMT800's dual zone/automatic controls. I'm glad that so far the only thing wrong with mine is the recirc door is broken.
Richard
Been there, done that. It's difficult to figure out, I'll agree on that. However, once you know the problem (usually one of the electronic blend door actuators), it's not hard to replace.