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I replaced mine a couple of years ago at about 120K miles. Impeller was intact and no wobble to the shaft. I think I could have retorqued and been good to go as just had a small leak from around one of the fasteners.
I helped a buddy do the WP on an 03 with 100K miles....no impeller left, shaft about to wobble out of the pump and serpentine belt shredded. I replace WP and thermostat (and belt of course) and flushed with distilled water twice before refilling with coolant. Been about two years now and he's been good to go.
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