Q: How do you know if your water pump is bad on a gm3400 v-6? It is not leaking, but continues to run hot with a new radiator/stat.

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I have replaced the thermostat and radiator in the car, but it continues to run hot even after I have bled the air out of the system. Thinking maybe the water pump is bad, however it is not leaking.

My car has 230000 miles.
My car has an automatic transmission.

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