Usually if it's bad you can just turn the heat on with a medium fan speed and follow the smell of burning plastic.
It should be under the dash on the right hand side near the blower motor. It has a bunch of wires going to it and 2 wires to the blower motor.
Note that on many of these trucks, a defective blower resistor can burn the electrical connector. Always check the connector for signs of damage when replacing the resistor and if it's damaged, replace the connector as well as the resistor.
The blower motor resister is located just below the blower motor to the left attached to the housing.........
The most likely problem with the heater blower on your 2003 Sable is the blower resister. The resister can go bad and cause you to only have one speed.
Well, In the 2002, the blower motor resister is behind the glove copartment. You might want to check there.
It would have a high speed relay and it would be in the power distribution box under the hood. The blower speed resister is for the lower speeds only.
trying to locate ,the resister to the blower motor foe 2003 grand prix gt
YOUR BLOWER RESISTER IS BAD
Right side of the vehicle, under the hood, in the HVAC compartment.
The blower resistor for a 2003 Trailblazer is located under the passenger side of the dash.
where is the heater blower resistor in a 2003 Honda element
The blower motor if failing and pulling to much current.The blower motor if failing and pulling to much current.
The blower motor resistor is located under the glove compartment in a black shroud.
where is blower control module located 2004 isuzu ascender