Where is the heater fan located in a 2000 chevy impala?

The blower motor relay is energized when the Blower Motor Control is set to the High position. This removes the blower motor resistors from the circuit and battery voltage is then applied directly from the HVAC BLO fuse (RH IP Accessory Wiring Junction Block) to the blower motor though the relay switch contacts. The blower motor then runs at high speed.

HVAC Blower Controls Circuit Description
The blower motor is a variable speed motor. The motor operates at a higher rate when voltage is increased to the maximum level.
The blower motor resistors reduce the voltage supplied from the A/C FAN fuse (LH IP Accessory Wiring Junction Block) when the blower control is set at low and medium speeds (speeds 1-4). The blower motor relay is energized when the Blower Motor Control is set to the High position. This removes the blower motor resistors from the circuit and battery voltage is then applied directly from the HVAC BLO fuse (RH IP Accessory Wiring Junction Block) to the blower motor though the relay switch contacts. The blower motor then runs at high speed.

You can't use High Beams as dipped, the spread is different. Just go to another garage, it can only be the bulbs, the connection, the fuses or the relay. In fact you can check all those yourself! It appears to be a known issue on the Impala. Look at the videos

https://www.google.com/search?q=2000+chevy+impala+headlight+problem

Fuse Box Diagram Chevrolet Impala (2000-2005)

https://fuse-box.info > chevrolet > chevrolet-impala-20...
It is located on the passenger's side of the instrument panel, behind the cover. The location of the fuses in the passenger compartment: Chevrolet Impala (2000- ...

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Check fan motor relay and temp. switch in block.

first it to verify the coolant flow. I suspect the heater core isn't flowing, you may need to take a garden hose and take both heater hoses off, and flush in both directions to clean the heater core. flush in both directions until you get clean water flow. I am assuming the coolant level is OK, and the water pump is pumping and the engine is getting warm enough.

please check the fuses AC/cruise and AC/fan Located in the fuse panel on the drivers side end of dash

the resistor to the blower motor is bad or the motor itself, the resistor should be right next to the blower fan a heavy gauge wire plugs into it, or it might even just be the wire, it is common for them to melt

your problem is your blower motor resistor. change that and it will fix the problem promise!!!!

i just didf this last week
there is a part called (by most)
the fan/tempertire control module, it is located in the heater housing...where the air flows.....and a wire is connected to it from the blower motor and another wire exits the part.. chang this part...it is costly but autozone has the best price around 125$

PCV . Positive Crankcase Ventalation Valves are always located in the valve cover pans with a hose attached usually leading to the air cleaner, or some other vacuum source..

the problem is the blower resister located under passenger side dash in back .take cover off bottom look toward back fire wall there should be about 4 wires unplug wires 2 7mm. bolts hold the switch in .please rate this answer thanks.