a/c / heater blower not blowing, 2009 Impala, 38,000 miles on 2009 Chevrolet Impala

a/c / heater blower not blowing, 2009 Impala, 38,000 miles. At first only worked certain speeds, now nothing. How much should I expect to pay? Still under warranty, but dealership said not necessarily covered, depends on where it stems from. Can someone help?

Asked by for the 2009 Chevrolet Impala
COULD BE BLOWER MOTOR RESISTOR APPROX COST 100.00, BUT NEEDS DIAG
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