1997 venture van. Fan for heat and A/C not working
Check the fuse and then the switch it self, if the fuse and switch is good. Then check the blower resistor and blower motor it self. I'm leaning towards the switch it self since you mentioned that it was sporadically and on the highest setting would by pass the blower resistors. Good luck and if it's not the switch then it's going to be the blower motor it self. Auto Zone has them in stock and can give you the step by step instructions for you to get the job done with common tools.
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