Why won't the blower fan work in my 1998 Sierra?
Blown fuse? Bad switch Bad fan motor? Bad fan relay?
Why wont the blower motor work on my 95 Bonneville it will work sometimes but not all the time what could be wrong with it?
Why do only things that work on my climate control on a 1995 Sierra 1500 are the first 3 blower settings and temperature control and nothing else?
dont know if your air works but my low speeds only worked on my 1995 gmc sierra and i found out there was a relay on top of the heater box after i took out the glove box. this works the high speed blower mode on the control switch. the low speeds are controlled by the blower resistor. the relay cost me about 15.00 at autozone.
the blower resister is no good When our '98 Breeze's blower began to work only on high, we replaced the resister, but it croaked about 2 weeks later. We replaced it 2 more times and the same thing happened. A mechanic told us the blower itself needed replacing, and thus, the blower kept burning out the resister. Works fine now. Found ours at a junk yard for $20.
You have a bad blower resistor. it is located directly behind the blower motor on the passenger side of the vehicle. You must first disconnect blower motor from bad resistor. Lower and remove blower. It won't be easy but remove the screws holding the resistor, disconnect the resistor and remove it. Cost is approximately $40 for a new one.
Depends on what you mean by heater will not work. If the blower motor will not work, it can be a blown fuse, bad blower motor, bad blower motor switch, or a defective blower motor resistor pack. If you mean that the blower motor works but there is no heat, then it can be a clogged heater core, thermostat stuck open, or defective heater control valve.
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.