The fuse, the switch, the blower motor itself is bad. Check the fuse first. Then unplug the motor and run jumper wires to it and see it the fan itself is bad. If not, it is a matter of figuring out what the problem is by the process of elimination.
yes
probably the blower motor resistor
When you find out let me know I have same problem replaced blower fan and resisitor did not work. I have a blazer zr2 2002
Blower motor control relay under dash behind blower motor is bad or has water in it from cabin filter port.
Could be,Blown fuse,Bad blower motor,Bad blower motor switch,Bad blower motor speed resistor,
The blower motors only work with the engine running. If the blower motor has three wires on the electrical plug, then the blower motor module is built into the unit & it's very expensive. Sometimes, you can tap on the motor with a hammer & it may work or slowly turn. If this is the case, replace the blower motor.
1995-2000 should all be the same
Either the switch or resister network has failed and needs to be replaced.
did your heater switch go out all of a sudden or did some work like high work and low not work? if some worked your blower resister is most likely bad under your glove box
Blown fuse, defective blower motor resistor pack, defective blower motor, a bad switch, or disconnected or loose wiring.
The blower motor speed resistor is burned out.
Check the 30 amp Blower fuse. If not that check the fan relay, if not that check the blower motor directly from a jump on the fan itself.