2010 Chevrolet HHR Owner's Manual - Page 328
2010 Chevrolet HHR Manual
Page 328 highlights
Because this operation can be a little difficult, you may choose to have this done at the dealer/retailer service department. To inspect or replace the filter, do the following: 1. Disconnect the Mass Air Flow sensor, PCV hose, and both ducts. 2. Pull the entire system from the top of the engine. 3. Turn the system over and place it on a soft, non‐abrasive surface. 4. Remove the screws that hold the housing and cover together and lift off the housing. 5. Inspect or replace the engine air cleaner/filter. 6. Reverse the steps to reinstall the system. Be sure to reinstall the housing tightly. How to Inspect the Engine Air Cleaner/Filter (2.0L Engine Only) See Engine Compartment Overview on page 6‑16 for the location of the engine air cleaner/filter. To inspect the air cleaner/filter remove the filter from the vehicle and lightly shake the filter to release loose dust and dirt. If the filter remains caked with dirt, a new filter is required. Never use compressed air to clean the filter. Because this operation can be a little difficult, you may choose to have this done at the dealer/retailer service department. 6-26