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This is most likely a bad bearing on the inducer motor. That is the exhaust blower on the unit and the bearings can go bad and that motor can get really annoying. I would check that out and see and replace it if that is the source...as it more than likely is.
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Odds are next to none that a bearing is bad on a brand new furnace. It could be gas pressure, air or an installation issue. The key thing is to ask contractor for a courtesy service inspection.
There may be a response about it being possible to have a bad bearing....I assure you the odds are much higher for these other items. But any hands on checking by you could void warranty.
And keep in mind I am a Trane Service Contractor
Just let me know what you find out on the unit first, you can just deal with me thanks!