Blower Motor

I have a 95 chev lumina apv, and my blower motor quit on me. I want to find out if it is the blower motor itself, or the switches on the dash. How would i go about finding out? Thanks

high speed relay and socket are common suspects. All speeds go through the HS relay, all lower speeds through the NC contact (unergized), and high speed when energized.
www.avigex.ca/xport/heaterrelay.jpg
www.avigex.ca/xport/hvac_diagram_front.jpg
However the low speed relay is neded for all speeds. THis one is in the convenience center andcna be swapped with one just beside.
www.avigex.ca/xport/convenience_center.jpg
YOU can disconnecet the blower motor and feed 12V direct for a test.