2016 Tahoe PPV front heater/AC blower not working

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manfromprovoriver

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Initially replaced blower it has a built in resistor, this fixed the issue for 3 days. Then blower shut off and would come on with full range with heater/ac front power cycle, drove on full for 1 hour. Parked came back started car and nothing. Synced it adjusts rear heater fine. Is this likely the head unit or BCM? Any help would be appreciated.
 

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