Washer Not Spinning or Agitating? Transmission Assembly WW01A00638 – Fix Drum Failure Fast

A failed washer transmission is the most common reason a GE or Kenmore top-load washer won’t spin, won’t agitate, or gets stuck mid-cycle with grinding or squealing noises. In most GE top-load washers, this is caused by a failed transmission assembly. When it fails, the drum stops rotating during wash or spin cycles, the washer may agitate but refuse to spin (or vice versa), and the gearcase produces grinding, squealing, or knocking sounds under load. ⚡ Common failure point in GE-built top-load washers after high cycle counts. Part WW01A00638 is the genuine OEM complete transmission assembly kit that restores full wash and spin function, including all necessary seals, gaskets, and mounting hardware.

❓ Is This the Right Part?

This is the correct fix if ALL of the following are true:

• ✔ Your washer powers on and the control panel responds normally
• ✔ The drive motor runs — you can hear it energize during cycles
• ✔ The lid switch, drive belt, and motor coupling have been confirmed OK
• ✔ Water fills and drains correctly
• ✔ ONLY problem is the drum not agitating, not spinning, or grinding/squealing from the gearcase area

Not sure? Send us your model number — we’ll confirm before you order.

🔧 Common Symptoms

• Washer not spinning — drum doesn’t rotate during spin cycle, clothes come out soaking wet
• Washer not agitating — drum doesn’t move during wash cycle
• Washer agitates but won’t spin, or spins but won’t agitate
• Loud grinding, squealing, or knocking noise from the bottom of the washer during operation
• Drum rotates slowly or inconsistently at speeds that don’t match the selected cycle
• Washer stops mid-cycle with motor fault or transmission-related error code

✔ If these symptoms match, this is the most likely failed component in the system.

✔ In most cases, replacing this transmission assembly restores full wash and spin operation immediately.

📦 Part Details

• Part Number: WW01A00638
• Type: Washer Transmission Assembly Kit – complete gearcase with seals, gaskets, and mounting hardware (16” x 12” x 5½”)
• Replaces: OEM direct-fit transmission assembly — supersedes 233D2549G002, 233D2549G005, WW01A00725 (no modification required)
• Brands: GE (General Electric), Kenmore

⚙️ Installation

Skill Level: ADVANCED — 2–3 hours. Professional installation strongly recommended. Disconnect power at the breaker and shut off the water supply before beginning. Transmission replacement requires removing the cabinet, agitator, tub, and drive components to access the gearcase — photograph all wiring and component positions before disassembly. Install the new transmission assembly, torque all mounting fasteners to spec, and replace all seals and gaskets included in the kit before reassembly. Run a full test cycle and check for leaks before returning the washer to service.

✓ Compatible Models

Confirmed compatible with GTW680BMK0DG, GTW680BMK0WS, GTW680BMM0DG, GTW680BMM0WS, GTW680BMM1DG, GTW680BMM1WS, GTW680BMR0DG, GTW680BMR0WS, GTW680BMR1DG, GTW680BMR1WS, GTW680BMR2DG, GTW680BMR2WS, GTW685BMR0WS, GTW685BMR1WS, GTW690BMT0DG, LMA74215WBAB00, LMC74201WDAB00, LMH74201WDAB00, LMP74201WDAB00, LMR75201WDAB00, LMS75201WDAB00, LMU75201WDAB00, WMH74201WDAB00, WMH74201WDAB01, plus additional GE and Kenmore top-load models. Contact us to verify your model number before ordering.

💡 Pro Tip