hi, I have a 2004 Jeep Grand Cherokee and on the same day I noticed that my cruise control was not working, and the switch that redirects air flow from the dashboard (defrost) to bi-level to floor etc is not working. Is there a common fuse that might have caused both to quit at same time? I have about 73K miles on Jeep, but still under extended warranty. Someone suggested on someone else's post that fuse 27 could affect it in a roundabout way.