2000 olds windshield washer won't work is there a fuse or does the motor just quit?

There is a fuse, but the motor can go out as well. Check the fuse before you replace the pump. There is a fuse. Check it before replacing the pump. Motors can just quit, but could also be plugged with dirt or debris, or the power wire to the pump could be loose. Both wiper blade hoses could also be plugged up if the windshield has been through a lot of dirt. Check the pump motor by having a buddy run it while you listen under the hood with the engine off.