Chevrolet Repair Questions? Ask a Mechanic for Answers ASAP
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Do you have a meter or test light you can use to do some testing? I am thinking you have a ground issue at the motor. If not that then the switch assembly is know for issues with overheating in the back of the connector.
Stephanie, I think you will find the ground to the blower motor is bad. Check that and see, repair it if you do find it bad. If you were not getting power, then I would suspect the switch.
Purple is power to the motor. There is either a black wire attached in the same plug as the purple that goes into the motor or a separate wire attached to the body of the motor that is the ground.