My a/c,heater air or defrost doesn't come on in front or back. on 1997 Dodge Grand Caravan

Could it be the front and back blowers? If so, how can I fix myself? Can't afford to be ripped off at a shop

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1 answer
That is 2 different circuits, can you run circuit test. By the way I am a shop owner and let's see if you have the ability to diagnose this problem.