The blower motor on my 2004 slt was acting weird for awhile--sometimes the blower speed was low or sometimes the blower motor would not come on at all. The blower motor was recently replaced with the compressor but the problem continued. I discovered that I could put pressure on the connector harness that goes to the blower speed resistor and the blower motor would come on. I took it back to my mechanic a couple of months ago and they found that the harness had melted and that was causing the blower motor to act up. Today I was in the front passenger seat and I could smell burning and when I touched the connector it was very hot. Any ideas as to what is causing this?