Remove the console. Remove the ashtray/radio trim plate. Remove the radio. Remove the HVAC control knobs(they pull straight off)for the heater, air, fan speed, A/C button can stay. Pop the HVAC control panel face, pry or pull it forward. Suspend control panel face or let it hang. Disconnecting the control unit lamp makes this somewhat easier. Push the HVAC control unit back, lower it to the radio slot, turn it clockwise to make switch accessible. The switch is held in place by two ears on the switch and two clamps on the control unit body. Pull the clamps away from the ears only far enough to release switch while prying switch from control unit body. Any more than that will compromise the clamps' ability to hold the new switch. Do not pull the clamps too far away from the ears or they may not have enough memory to re-clamp. Remove switch, take care to get all the pieces, springs, roller pins, and the lever w/contact hat(3contact bumps)disconnect from wire plug. Inspect, clean, and replace worn parts or entire switch(the moving parts are all part of the lever). Use contact lube to keep pins, springs, in place. Replace in reverse order. If you pulled the clamps too far and they won't keep the switch together, there are two slots beneath the clamps that a small zip tie can be threaded through in order to tie the switch in place. I used a couple loops of mechanic's wire.
replace the blower motor switch
The blower motor is drawing to many amps, replace the blower motor.
If there is current going through the wire to the blower switch, try bypassing the switch with a jumper wire. If the blower motor works, then replace the switch. If the blower motor does not come on, then you probably need to replace the blower motor.
Check to see if you are getting power to blower motor - if so replace blower motor If not check fuse, switch, resistor pack.
The fuse. The blower motor speed resistor. The blower motor relay. The blower motor switch. Check for power at the blower motor connection.
Either replace the burnt wire or run new to the blower motor with a toggle switch.
The first thing I'd look at is the switch and then the connections to the blower motor. Try bypassing the switch and see if the blower motor starts. Also, don't forget the fuse controlling the blower motor. Replace it with a fuse of similar size and see if that corrects the problem. If all else fails, just replace the blower motor unit with another. Go to the wreckers and you can get it for less than half price.
Replace fan switch.
The blower motor speed resistor is burned out. You can replace only the resistor but the resistor probably burned out because the blower motor is going bad. If you want to fix it for good, replace both the blower motor and blower motor speed resistor.
Bad resistor at the blower motor? Bad blower motor switch?
Defective blower motor, blower motor resistor pack, or blower motor speed control switch.
Defective Blower Motor Resistor Pack. Replace it.