Thanks guys. Yes, I've come to the conclusion the DIY is not worth it on this one, don't know enough about AC systems. Thanks for the tips. My thing with taking it to the dealership for the repair and possibly getting GM to cover some of the bill is that they'll use the same AC Delco condenser that's proven to be of poor build quality. A lot of people have had their condenser go out on these trucks. I'm having trouble finding an aftermarket condenser that is a direct replacement....i.e., not one that will work, one that is identical in form, fit, and function.