First warranty repair.

Buick Ownership
Our 2018 Tourx Preferred (3000 miles) had an intermittent high pitched whistle after warming up. Took it to the dealer and had the service manager spend about 5 minutes under the hood to witness the whistle. It sounded very much like a hot tea kettle. I thought it sounded like a bearing about to seize. Turned out to be the water pump. I assume it was the pump impeller shaft. Pump replaced the next day under warranty and all is quiet again.
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