smash it!!!!
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.................
The year, make and model info would help but generally the heater blower motor resister is located close by the heater blower motor.
Replace the blower motor also.
Replace the resister, if that doesn't work replace the blower motor.
your motor resister is bad or might be called the climate control module
Replace the blower motor speed resister.
Look at the link I posted, that should help you. (:
when motor stops, tap on motor and see if restarts. if it does replace motor. there is a bad spot on the armature. if not check the blower resister.
location of resister for blower motor on 1997 s 10 blazer
plastic cover for heater motor
Behind the glove box.
i think what you are refering to is a blower staying on all the time, if so the blower motor has shorted the control module, you need to replace the blower motor and control module.