The Motor Assembly is an OEM component specifically designed for GE laundry machines. This assembly contains the motor and blower wheel that are responsible for forcing air through the dryer and circulating hot air around clothes during the drying cycle.  Causes of a bad motor assembly can include wear and tear over time, exposure to high heat cycles that can depreciate motor insulation or bearings, or damage due to impact or mishandling.  Symptoms of a bad motor assembly include: The dryer not heating or only heating intermittently   Loud grinding or knocking noises originating from the motor area The blower wheel no longer spins or turns slowly Extended drying times  This OEM GE part is also compatible with Hotpoint, RCA, and some Kenmore models.Part Number WE17X10012 (AP4501474) replaces 1556736, AH2374286, EA2374286, PS2374286.