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Re: 96 blazer Air conditioner
If only the high speed works, check your HTR A/C fuse. If the blower switch has other speeds which no longer work, I would first check at the blower motor resistor. Low speed would be the brown wire, 2 = tan, 3 = light blue and high goes directly from the switch to the blower relay. Dark blue on the resistor goes through the relay to the motor. If you have power on the wires corresponding to their speeds, then the resistor is probably bad. If your missing power at them, check your switch.
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