2002 Silverado 1500 4x4 extended cab.
Problem: A/C not blowing out of any vents, floor or dashboard. found all 3 actuators with cracked final drive gears. My question is all 3 actuators different or does 1 able to be used in all 3 location?

 

I'm pretty certain all 3 differ. Based on parts availability (I just got my big order in today from Rockauto and bought 3 new actuators) and all 3 have different part numbers (same brand).