heater don't work
If you mean that it's not blowing any air, your blower motor has failed. If it will blow air only on HIGH or LOW speed only, your fan speed resistor has failed. Usually, the blower motor is located under the dash passenger side. Look up under glove box way in the right corner. Sometimes if you give it a couple of good taps with the end of a ratchet, it will turn on for a while. But that won't fix it. Will die again. You will have to replace it.