GTW500ASN0WS Won't Drain — What Part Fixes This Problem?
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Understanding the Problem
If your Whirlpool model GTW500ASN0WS finishes a cycle but water remains in the tub, or the washer stops during drain/spin, the issue is almost always related to the drain path or drain control. A physical blockage in the drain hose or pump housing, a failed drain pump, or a defective lid switch/door lock that prevents the washer from entering drain/spin are the most common culprits. Less commonly, wiring faults or a failed control board can stop the unit from commanding the pump. Diagnosing the problem starts with simple checks — inspect the drain hose and pump inlet for clogs, listen for the pump running during a drain cycle, and confirm whether the washer thinks the lid is closed (lid switch). If the pump runs but no water moves, the pump or impeller may be damaged or blocked. If the pump doesn’t run at all, you’ll want to test for power to the pump and verify the lid switch and wiring before replacing the pump or control board.
Common Symptoms
Washer stops mid-cycle with water in tub, water left after cycle, buzzing or humming at the base, washer never enters drain/spin, visible debris or coins in pump trap.
Common Causes
- Blockage in drain hose, pump inlet or sump (coins, lint, clothing debris)
- Failed drain pump or damaged pump impeller
- Defective lid switch/door lock preventing start of drain/spin
- Wiring harness fault or blown fuse to the pump
- Faulty main control board not sending power to the pump
Popular Parts That Fix This Problem
These are the most common replacement parts that fix this problem. When you're ready to order, click below to find the right part at PartsDiscount.com — just search by your appliance model number for a guaranteed fit.
Helpful Repair Tip
Start a drain/spin cycle and listen at the bottom front right (pump area). If you don’t hear the pump hum, remove the lower access panel and test for 120V at the pump terminals during the drain command — no voltage points to lid switch/wiring/control board; voltage with no pump operation indicates a failed pump.
Frequently Asked Questions
How much does it cost to replace the drain pump on a GTW500ASN0WS?
Parts for a drain pump typically range from about $45–$150 depending on OEM vs aftermarket. Labor (if you hire a technician) commonly adds $100–$250 depending on local rates. If the pump is accessible from the lower access panel and there are no wiring issues, this is usually a 30–60 minute DIY job for someone comfortable with basic tools.
Can I keep using the washer if the lid switch is bad or the pump is noisy?
No — a bad lid switch can prevent the washer from entering drain/spin and is a safety feature; bypassing it is unsafe and not recommended. A noisy or failing pump should be replaced: continued use can lead to complete pump failure or debris causing damage elsewhere. Always disconnect power before inspecting or replacing parts.
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