From what I can tell on the diagram im looking at it says that its on the air box behind the dash on the left side. If your jeep didn't come with ac then there might be a relay that controls it. With the blower on start pulling them one at a time to isolate where its coming from. The computer also tells me that the blower resistor is also on this module behind the dash.
Wednesday, January 29th, 2014 AT 11:03 AM