The filter removes dust and pollen from the air which is drawn into the vehicle. Airflow reduction is an indication that the filter needs to be replaced.
The filter should be replaced as part of routine
scheduled maintenance. See Scheduled Maintenance for replacement intervals. To
find
out what type of filter to use, see Maintenance
Replacement Parts.
To access the passenger compartment air filter:

1. Open and empty the glove box.
2. Lower the glove box door by pressing in on each side and lowering from the track.

3. Pull the tab at the back of the glove box toward you and open the passenger compartment air filter door downward.

4. Pull the filter out toward you.
Install the new air filter with the AIR FLOW arrow pointing downward. Reverse Steps 1 through 3 to reassemble.
Outlet Adjustment
Warning Lights, Gauges, and IndicatorsChevrolet Cobalt Service & Repair Manual. General Service
Two basic types of power assist
mechanisms are used: vacuum assist diaphragm assemblies, which use engine
vacuum or in some cases vacuum pressure developed by an external vacuum
pump. The second type is a hydraulic pressure assist mechanism, which use
pressure developed by an ...