The heating and a/c does not work in my car what could be the problem? on 2005 Chevrolet Cobalt

I changed the blower motor resistor. But the switch to control the temperature still doesn't work but I also did some research and it said it could be the blower motor itself. Any ideas on how to find out what the problem is?

Asked by for the 2005 Chevrolet Cobalt
1 answer
IT COULDB BE MANY ISSUES SEEK DIAG AND EST TO BE SURE