Owner's Manual
Page 302
...shake the filter to Inspect the Engine Air Cleaner/Filter Inspect the air cleaner/filter at every oil change and replace it at the first oil change after 25,000 miles (41 500 km). Remove the two screws located on the driver's side of the cover. 2. To ...inspect or replace the engine air cleaner/filter, do the following: CTS shown, CTS-V similar The engine air cleaner/filter is required. Lift the cover off. 3. Engine Air Cleaner/Filter...
...shake the filter to Inspect the Engine Air Cleaner/Filter Inspect the air cleaner/filter at every oil change and replace it at the first oil change after 25,000 miles (41 500 km). Remove the two screws located on the driver's side of the cover. 2. To ...inspect or replace the engine air cleaner/filter, do the following: CTS shown, CTS-V similar The engine air cleaner/filter is required. Lift the cover off. 3. Engine Air Cleaner/Filter...