\'92 fullsize blazer, heater problems Alright, this is just annoying. The heater won't turn on when I hit the button. It waits about 3 minutes then the fan will start to blow. When I hit the fan speed up or down, I can hear the relay click but no fan. As of today, the fan won't blow at all. I assume because I can hear the relay click every time I try to switch speeds it is still good. What do I actually need to replace, just the blower motor? Thanks for any suggestions you may have!