Chevy Lumina APV Van - WHERE IS THE WIPER MOTOR??

I have a 1993 Chevy Lumina APV Minivan, wipers do not work at all. I hear a weird sound when they are on but no wiping action.

I want to replace the motor myself, but have no idea where it is. Can someone tell me where it is, how to find it and what I am going to deal with replacing it?

Thanks