Electrical Equipment problems of the 2002 Chevrolet Blazer

I've had the Blazer for one year and the fuses keep blowing taking out all dash information. I've had it in the shop three different occasions so far and the mechanic can't pin point the problem. . (in other words they like to make you look as if your lying)my warranty does cover for them to look at it. But its time off work and inconvenience that it is causing that doesn't seem to matter to them. . Cheverolet don't want to work out anything to resolve this matter. .