A/c blower 03 jeep wrangler

the a/c blower on my 03 wrangler only works on med. and high. I changed the switch but still no “low”. Could it be the fan motor or some simple thing like a loose connection?

Most likely the blower motor resistor pack is faulty. Your local Jeep dealer can provide you with this part, and provide you a print-out on it’s location. Usually mounted on the blower motor housing.