Heat dependant dash rattle
Hi. I was wondering if anybody could help me with this. I tried so manythings till now. I need backup! When the heating system is on and the temperature of the coming out air is hot, when I hit a crack, there's a sound coming from the middle of the upper part os the dash. The sounds is like nails on a blackboard. When I lower the temperature, the screaming noise stops. I disassembled most of the dash (upper pannels, lower sreering pannels, middle console, the radio) and took a ride, and the noise remains, only when the air of the heating system is hot...
Do somebody have an idea?