95 STS No Blower?? Cold in Ohio.

Help, Help, Help, I have a 95 STS and the blower in the front for heat or AC will not kick on. The back will but not the front. If I am in on the highway heat comes thru the vents but the blower will not come on. I took it to a Mechanic today and he tried a new blower motor but that would not kick on also. Please any advice