Sounds like your Blower motor resister, it controls the voltage to your blower motor, controlling the speeds, if you always have it on high, med ect. that speed is more likly to burn out first
The blower motor speed resister is probably burned out.
Could be a faulty fan motor and/or switch.
possibly a high speed blower relay. If the the ac works on all speeds but high, this is my bet. You should be able to pick up a replacement relay at most parts stores.
Paul G. Blazer High School was created in 1963.
the blower resistor is bypassed on high. a direct path to ground. if high is the only operational speed the resistor is bad.
Kevins
Blow at High Dough was created in 1989.
If it does not blow cold air, the system may be low on freon. If the blower motor doesn't seem to blow much air out the vents, one possiblity could be obstructions in the duct work such as mice have built a nest (not uncommon). Also the high speed relay for the blower motor could be burned out.
how to change upper tie rod on 96 chevy blazer
the height of the blow of the Blue Whale is 10-12 meters high.
The high speed of the blower is controlled by a black rectangular relay on the firewall facing the engine compartment on the passenger side (I think there are 3 relays there) one is for the high speed. If you open it and the plastic base looks melted > it's most likely the relay I believe the ralay is under-rated bacause if you use high speed alot (like I do) it burns out prematurely. I had to replace mine in my 1996 Blazer two times in 140,000 miles
They Blow Clockwise