Chevrolet express 2001 用户手册

When you close a vent, it will increase the flow of air
coming out of any vents that are open.

If you have rear heating or rear air conditioning, you
will have adjustable vents in the rear of the vehicle to
help direct the airflow. The rear air conditioning vents
are located in the headliner at the rear of the vehicle.
The rear heating vents are located next to the second 
and third seat on the driver’s side of the vehicle, near 
the floor. You can move the vents to direct the flow of
air, or close the vents altogether. When you close a vent,
it will increase the flow of air coming out of any vents
that are open.

D Keep the hood and front air inlet free of ice, snow, or

any other obstruction (such as leaves). The heater
and defroster will work far better, reducing the
chance of fogging the inside of your windows.

D When you enter a vehicle in cold weather, turn the

blower fan to HI for a few moments before driving
off. This helps clear the intake ducts of snow and
moisture, and reduces the chance of fogging the
inside of your windows.

D Keep the air path under the front seats clear of

objects. This helps air to circulate throughout 
your vehicle.

Your vehicle has air vents in the center and on the sides
of your instrument panel.

You can move the vents from side to side or up and
down to direct the flow of air, or close the vents
altogether. When you close a vent, it will increase the
flow of air coming out of any vents that are open.