Disconnect the wire terminal from the negative terminal of the battery.
Remove the glove box (see Removal the glove compartment).
Using a Phillips screwdriver, unscrew the four screws... ...and remove the instrument panel crossbar.
By pressing the lock, we disconnect the wiring harness block from the electronic speed controller of the fan electric motor.
By pressing the lock, we disconnect the wiring harness block from the fan motor connector.
Using a Phillips screwdriver, unscrew the four screws that secure the fan (for clarity, shown on a removed heater).
We remove the fan from the heater housing (for clarity, the instrument panel has been removed).
We install the heater fan in the reverse order.
At the same time
the mounting pins on the heater body must fit into the holes in the fan base, and the square tabs on the base must fit into the corresponding holes in the heater body.
To replace the fan motor
using pliers, squeeze the ends of the clamp and remove the impeller mounting clamp.
Using a screwdriver, pry up and remove the impeller stopper.
We remove the fan impeller from the electric motor shaft.
Using a Phillips screwdriver, unscrew the four screws.
We remove the base of the electric motor.
We remove the electric motor, the electric motor holder and the lining from the casing.
We install the heater fan electric motor in the reverse order.
[The original article is on the website: «chevyman.ru»]