Clothes washer doesn't empty tub

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Brand: GE
Model Number: GHWP1000MOWW
Main Symptom: Tub doesn’t empty
What happens & when: On rinse cycle tub spins slow, doesn’t empty tub. While doing this every few seconds it makes a clicking sound.

Error Code (if any):
Parts or tests already tried:
Photos / video link:

If the front panel of the washer is removed, the drain pump can be accessed for testing. While the washer is in a drain portion of a wash cycle, the drain pump can be tested with a meter set to Volts AC. Is there 120 Volts AC reaching the drain pump when testing with a meter probe on each wire of the drain pump?