Need to know how to replace a fan blower motor for the ac in a 1994 Chevy 12 ton pickup?

The blower motor can be changed from under the hood on the passenger side. It is located there next to the fender well and has 1 wire or connector to the motor, a vent/cooling hose in the bottom of it and a grnd wire under one of the screws that hold it in place. I think there are 3 screws, take them out and the blower and motor should pull out easily. Remove the nut on the shaft and the fan wheel should pull off the shaft, allowing access to the nuts that hold the motor to the plate or the new motor will have a built on plate.