Because it is an Dodge. GET A CHEVY
There is a fuse under the hood for the blower motor.
under the glove compartment I was told!
Bad bearing in blower motor?
It should be in the heater blower motor case which is located under the glovebox.
Replace heater motor resistor.
The front blower resistor on a 98 Dodge Caravan is replaced by removing the cover and disconnecting the wiring harness. The resistor can then be pulled and a new one put in its place.
There are similar, but not the same.
It is over the passenger side strut tower, accessible from under the hood.
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The Dodge Caravan heater was invented in 1984 by the Dodge and Mopar companies. Since it's creation it has evolved into a much bigger and popular van.
The resistor block or blower motor resistor is used to control the speed of the blower motor. That is how you get the lower speeds on your air conditioning or heater. The higher the resistance the lower the speed of the motor.
For the 1989 Dodge Ram, the heater blower motor resistor can be found on the passenger's side, on the bottom of the heater box. It is beside the blower motor.
Probably the blower motor resistor is fried. New ones from Dodge dealer are usually about $20 for the part. A very cheap and easy DIY fix.
Usually if the resistor is bad the heater will only run on full blast.
Behind the glove compartment.
It is on the Right side of the Heater Core Covering.
If you are asking about the blower you only have one that controls both the heater and the a/c............
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It is in the firewall over the passenger side strut tower.
Have a look at this link: http://www.wikihow.com/Replace-a-Tail-Light-on-a-Dodge-Grand-Caravan
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Somewhere in the path of the air that the rear blower motor blows