a blower motor resistor controls the speed of the fan from low to the 2nd highest by going through a resistor block. The resistance changes on each coil, therefore changing the speed of the blower. high setting bypasses all of the coils and runs at full speed. You know yours has gone bad if it only runs on high.
Behind the glove box.
It's close to the blower motor.
When you beat the blower motor, you are probably shaking the blower resister. The resister is what controls the blower speeds and is probably bad or loose.
location of resister for blower motor on 1997 s 10 blazer
Replace the blower motor also.
Remove the HVAC rear module auxiliary assembly.Disconnect the electrical connectors from the rear blower resister auxiliary.Remove the air outlet duct from the rear blower motor controller auxiliary.Remove the screws from the blower motor rear resister auxiliary.Remove the rear blower motor resister auxiliary.Replace the resister and install new thermal gasket.................
Blower motor resisters are generally mounted nearby the blower motor for cooling purposes.
The resister for the 2001 prism blower motor drops voltage to the blower motor. This is how the blower motor runs at a lower speed.
Well, In the 2002, the blower motor resister is behind the glove copartment. You might want to check there.
The heater blower resister is under the dash on the passenger side. It is inserted into the side of the blower motor case.
The blower motor resister is located just below the blower motor to the left attached to the housing.........
The blower motor resister block is located in the center of the dash. Remove the complete glovebox and look to the left and you will see it...............