On a 1997 Dodge Ram 1500 Van, open the hood. The resistor assembly is at your upper left on the heater/AC ducting, with a cable of wires going to it, a trapezoidal plate about 2" x 3" held on by two small screws. Inside, it has a shrouded set of three resistors plus an unknown gidget that looks like a resistor about 0.1" x 0.5". On my van, the resistors are fine but the gidget is open circuit, or else it's a capacitor to stop radio interference. I also have a blown out motor (open circuit), and a shredded up flimsy, chintzy plastic fan. The ducting was clean, no sign of debris to block the fan except for pieces of fan blades. The fan motor is about a foot below the resistor, hard to get at but better than on most vehicles. R B Britton/ Hetex Engines Inc.
Most likely a failed blower resistor.
the blower resistor is located on the evaporator housing it is secured by two screws and has a 4 wire harness plug on it easily accessible you will see it as soon as you open the hood
If you are sure that everything is working correctly then check the ground going to the blower motor assembly.............. Which goes through the blower resistor.
Under the dash on the passenger side.
Passenger side under the hood.
three screws accesible under dash on passenger side.
Look at the passenger side firewall Some are removed from the exterior Some are removed from inside behind the glove box
How do you replace the heater blower motor resistor on a 1998 gmc serria 1500 p/u
A 1994 Dodge Ram does not have a ballast resistor.
Remove the wiring harness from the back of the blower motor in your 1993 GMC 1500. Remove the blower motor retaining bolts. If the new blower motor does not have the fan attached to and you will need to remove the fan from the old blower motor. Reverse the process to install the new blower motor.
The blower motor speed resistor is burned out. That part is available from your local auto parts store.
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