2002 GMC Envoy problems

I have a couple of problems 1. The keyless entry system has quit working, I have bought a new key fob and programmed it with no luck. I have checked the rear wiper and it still works as well as the passenger side window so I am out of what I have found to check. 2. The envoy has dual climate controls, the passenger side air now just blows air that is the same temp as outside air.