High-limit thermostat
Controls the heat. A dryer that runs too hot or won't heat points here.
Drive belt
Replaces WE12X0082
Turns the drum. If the motor hums and the drum stays still, check the belt first.
Drum bearing
Replaces WE3M20
Thumping or squealing during a cycle points to worn rollers, pulleys or bearings.
Door switch
Replaces WE4M126
Door, lid and control switches stop a cycle when they fail.
Interlock switch
Replaces WD21X0557
Door, lid and control switches stop a cycle when they fail.
1ThermostatWE4M137
2Drive beltWE12X10014
3Drum bearingWE3M26
4Door switchWE4M415Part numbers come from the Sears PartsDirect parts list for the GE DDC4400SLMWH (view the list), checked November 15, 2026. Amazon buttons open a search for the part number; we may earn a commission.
Where the model number is
Inside the door opening, on the frame or the back of the door. Older models: on the back panel near the cord.