Disconnect the wire terminal from the negative terminal of the battery.
For clarity, we show some operations with the instrument panel removed.

By pressing the lock..

… we disconnect the wiring harness connector from the electric motor connector.

We disconnect the electric motor ventilation hose from the branch pipe.

Using a Phillips screwdriver or a 7 mm head, unscrew the three screws securing the fan.

We remove the electric motor with the impeller from the heater housing.
We install the heater fan in the reverse order.
The original source of the article is the website CHEVYMAN.RU
