Just had a fellow coworker today ask me what was wrong with her minivan because she either had full blast high or completely off with her blower fan climate controls. Well, right away I said it sounded like the blower fan resistor and as it turns out I was correct. So she called the dealer and they gave her some song and dance about how they'd have to tear into the dash to replace it (she claimed they wanted $200 plus parts!!!). I said hogwash, let me have a peek and sure enough, plain as day the resistor was right behind the glovebox....it could not have been any easier to replace. Less than 5 minutes (no joke!) and I had the new one swapped in. Fan works fine on all speeds now and it only cost her about $20 CDN for the part from the dealer. I think someone owes me lunch! Anyway, I just wanted to post it up in case someone had a similar issue with their Caravan (or as it turns out almost any Dodge product in the 2001-2004 year range including Durango and Dakota....the location is slightly different in these other models but still very easy to change).
Here's what you see right behind the glove compartment (piece of cake ):
Here's the steps my grandma would need to fix this :
1) Open the glove box.
2) Flex both sides of the glove box bin inward near the top far enough for the rubber glove box stop bumpers to clear the sides of the glove box opening, then roll the glove box downward.
3) Reach through the glove box opening to access and disconnect the instrument panel wire harness connector for the blower motor resistor from the resistor connector receptacle.
4) Reach through the glove box opening to access and disconnect the blower motor pigtail wire connector from the resistor connector receptacle.
5) Remove the two (8mm) screws that secure the blower motor resistor to the evaporator housing.
6) Remove the blower motor resistor from the evaporator housing.
Here's some good info on the subject too:
http://www.thegatesofdawn.ca/wordpre...a-fan-problem/