I have a 2004 Buick Rainier CXL+ AWD and I am having several electrical issues. The Cruise is not working. The ABS, Brake Light, Service 4x4 Light and Airbag Lights flash on and off intermittently at random. The DRIVER 1 message also pops up randomly while driving. I have seen over 20 posts with similar issues but have not seen any replies with answers. The battery is fine. My mechanic has jiggled the hell out of the iginition switch and he says that is not the problem. Another issue is that the HVAC system is blowing cold on the driver side and hot on the passenger side as well as blend/mode doors that arent working. I believe the electrical and HVAC issues are seperate problems...Any ideas???? PLEASE HELP!!