Oldsmobile 1999 Silhouette - Manual (Page 319)

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1. Pull the tab up and out on the outer access panel. 2. Then squeeze the tab on the left of the inner
access panel.
3. The first filter will pull straight out. To remove the
second, reach in and slide it toward the opening. Pull
the second filter out.
4. Replace the filters by reversing Step 3. Make sure
the filters are inserted so that the sealing foam is
angled in the same direction on both filters. For the
type of filter to use, see “Normal Maintenance
Replacement Parts” in the Index.