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A cracked or stripped timer knob is one of the most common reasons a GE dryer becomes impossible to start — if the knob can’t engage the timer shaft, the drying cycle can’t be set. In most GE dryers, the timer knob is the primary interface for setting drying time — when it cracks at the shaft interface or strips internally from repeated use, the knob spins freely without engaging the timer, leaving the dryer unable to start. ⚡ Common wear item on GE dryers with mechanical timers. Part WW02L00732 is the genuine OEM replacement — updated with a metal ring reinforcement at the shaft interface for improved durability over the original plastic-only design — that restores full timer control immediately.
This is the correct fix if ALL of the following are true:
Not sure? Send us your model number — we’ll confirm before you order.
✔ If these symptoms match, this is the most likely failed component in the system.
✔ In most cases, replacing this timer knob restores full dryer control immediately.
Skill Level: Easy — 5 minutes. Unplug the dryer before beginning. The timer knob pulls straight off the timer shaft — no screws required on most models. Align the D-shaped or flat-sided shaft with the matching slot inside the new knob and press firmly until fully seated. Restore power and turn the knob through its full range to confirm smooth engagement before use.
Confirmed compatible with GTD40EBMK0WW, GTD40GBMK0WW, GTD45EBMK0WS, GTMP280GD5WW, plus additional GE dryer models. Contact us to verify your model number before ordering.
Not sure about your model number? Call 1-877-899-7278 and we’ll help you confirm. All brand names are the property of their respective owners and are used for compatibility reference only.