2013 Buick Regal Owner Manual - Page 264

10-16 Vehicle Care Notice: If the air cleaner/filter is off, dirt can easily get into the engine, which could damage it. Always have the air cleaner/filter in place when you are driving. 2. Coolant Surge Tank and Pressure Cap 3. Disconnect the electrical connector (3). 4. Remove the screws (1) on top of the engine air cleaner/filter housing. 5. Lift the filter cover housing away from the engine air cleaner/filter housing. 6. Pull out the filter. 7. Inspect or replace the engine air cleaner/filter. 8. Reverse Steps 2-4 to reinstall the filter cover housing. Cooling System The cooling system allows the engine to maintain the correct working temperature. When it is safe to lift the hood: 2.4L L4 Engine without eAssist 1. Engine Cooling Fans (Out of View) 2. Coolant Surge Tank and Pressure Cap { WARNING Operating the engine with the air cleaner/filter off can cause you or others to be burned. The air cleaner not only cleans the air; it helps to stop flames if the engine backfires. Use caution when working on the engine and do not drive with the air cleaner/filter off. 2.0L L4 Engine 1. Engine Cooling Fans (Out of View)