It could be the blower resistor...does your fan work @ all?
The resistor is easier & cheaper to replace than the blower motor...it's located on the bottom of the blower housing under the passenger side dash...
Just something to check first b4 you get into the blower motor..
My blower does not come on at the HIGH setting (#4). Installed a new Blower Motor Resistor, brought back fan Settings 1 - 3. I was told by the mechanic that Setting 4 is wired through the RELAY, not the resistor. Where is the Blower Motor RELAY?