Check the harness close to the fire wall on the outside on the Pass side should be a red/dark green/lt green/and maybe a black or brown wire .check the connection there, may have a melted (red wire) :texas:
i think the high speed blower is on a fuseable link not a fuse. the lower speeds are fused. does it blow in any position on the heater control range or just the ac side ? does it blow on vent or heater as well.