Test The Plug On The Blower Motor For Voltage If It Has Voltage Test The Blower Motor If Its OK. Most Likely Your Plug Is Bad Loose Or Broken Wire If So Replace It. Good Luck Remove The Wire Pluged Into The Blower Motor, Test To See If You Are Getting Voltage. Also Check The Plug On The End Of The Wire You Removed. You Will Most Times Find A Bad Connection. Like A Wire Loose Or The Rubber Deterated. Buy This Plug If That Is What You Find. Get Some BUTT Connectors Install The New One. Be Sure To To Correctly Get The Colors Right. This Should Take Of It.
check the blower motor resistor
You may want to check the heater blower resistor, its behind the glove compartment
If the heater is blowing the fuse when the blower is turned on, I would suspect the blower motor is defective or locked up. If the A/C is blowing a fuse, suspect a bad clutch, or locked up compressor.
Check the fuse
check fuse
make sure the blend doors are working properly. check the heater core for blockage or debris around it. check thermostat, and have the coolant checked to see if it is still good.
My heater / ac blower is not working, please advise.
Check the control module, the resistor, etc......
Check the blower motors ground and power in the truck and the blower motors resister......
There might be a bad fuse causing the heater to not work. Check the fuses if they are all ok you may have a bad blower motor. when you turn the heater on and no air is blowing then it is your blower motor.
Check to see if you are getting power and ground to the blower motor - if so blower motor is bad. If no power possibly fan switch or selector switch Also check the blower motor resistor, found in heater plenum.
check for a blown fuse that says heater or blower motor