Chevrolet 2006 HHR Owner's Manual page 149

3. Pull each of the three tabs of the filter access door
down and open the access door downward.
4. Pull the filter out, keeping it face up so as not to
drop any dust into the passenger compartment
upon removal.
When installing a new air filter make sure the AIR
FLOW arrow is pointing downward. Reverse Steps 1
through 4 making sure the glove box door snaps
back into place.
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