I had a different problem my step going in made a ratcheting sound. Ended up being a broken gear tooth In the gear box
If you here the motor turning and the step doesn't move then either the gear in the motor is completely broken off or as said above the pin may have backed out. But if it's the pin the step would move easily by have it even if you step on it
Look at the attaching pin. If its hooked up call LCI very good customer service
Jerry
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