Air Vents; Passenger Compartment Air Filter; Service - Chevrolet Trailblazer 2023 Owner's Manual

172 Climate Controls

Air Vents

Use the louvers located on the air vents to
change the direction of the airflow.
To open or close off the airflow:
Move slider knobs away from the
occupant for shut off closing.
Operation Tips
Clear away any ice, snow, or leaves from
air inlets at the base of the windshield
that could block the flow of air into the
vehicle.
Clear snow off the hood to improve
visibility and help decrease moisture
drawn into the vehicle, which may
improve long term system performance.
Keep the path under the front seats clear
of objects to help circulate the air inside
of the vehicle more effectively.
Use of non-GM approved hood deflectors
can adversely affect the performance of
the system. Check with your dealer
before adding equipment to the outside
of the vehicle.
Do not attach any devices to the air vent
slats. This restricts airflow and may cause
damage to the air vents.
Caution
Use of air fresheners may cause
permanent damage to plastics and
painted surfaces. If an air freshener
comes in contact with any plastic or
painted surface in the vehicle, blot
immediately and clean with a soft cloth
dampened with a mild soap solution.
Damage caused by air fresheners would
not be covered by the vehicle warranty.
Maintenance

Passenger Compartment Air Filter

The filter reduces dust, pollen, and other
airborne irritants from outside air that is
pulled into the vehicle. The filter should be
replaced as part of routine scheduled
maintenance.
See Maintenance Schedule 0 315.
See your dealer regarding replacement of
the filter.

Service

All vehicles have a label underhood that
identifies the refrigerant used in the vehicle.
The refrigerant system should only be
serviced by trained and certified technicians.
The air conditioning evaporator should never
be repaired or replaced by one from a
salvage vehicle. It should only be replaced
by a new evaporator to ensure proper and
safe operation.
During service, all refrigerants should be
reclaimed with proper equipment. Venting
refrigerants directly to the atmosphere is
harmful to the environment and may also
create unsafe conditions based on
inhalation, combustion, frostbite, or other
health-based concerns.
The air conditioning system requires periodic
maintenance. See Maintenance Schedule
0 315.
Caution
Damage caused by improper refrigerant
usage could lead to costly repairs and
may not be covered by the vehicle
warranty. Refrigerant systems should
only be serviced by qualified personnel.
Always use the correct refrigerant.