If the OP needs pics just PM me or make a request in this thread since I have a collection covering the complete hub removal and replacement for the Alero.
Keep in mind the published torque figures in the FSMs is for the AC Delco hub which will have 3 new hub to spindle bolts and the new style second design axle nut. Normally aftermarket hub providers publish their recommended axle nut torque based on material composition. See pic below.
AC Delco/GM Hub Assembly Alero
The proper socket size is 36mm for the axle nut. Be sure to use PBblaster on the axle nut before removing. I recommend loosening not removing the axle nut before wheel removal. Also, you will need a long breaker bar if you do not have any power or air tools.
To get the axle shaft off the hub I used the old PAC axle nut from the old hub. Thread nut over a few threads. Then carefully use a hammer by tapping on the axle nut until the axle shaft gives. See pic below.
Old hub removed. Be sure to use PBBlaster on the 3 hub to spindle bolts. This is the hardest and most time consuming part of the job. Removing the 3 hub to spindle bolts. Also, note the wheel sensor wiring harness.
Job completed.
