The 2021 Equinox has two air filters: the engine air filter in the under-hood air intake box on the passenger side, and the cabin air filter behind the glove box. Both are user-serviceable with basic tools.
In this article, we’ll explain exactly where each filter sits and provide practical, step-by-step instructions to replace them on the 2021 Equinox. We’ll cover the engine air filter for models with the 1.5L and 2.0L engines, and the cabin air filter that serves the HVAC system inside the vehicle.
Engine air filter location
Where to find it and what it looks like
The engine air filter sits in a rectangular black plastic housing in the engine bay, typically on the passenger side near the front, close to the radiator support and intake hose. A large hose runs from this box to the throttle body.
Before you begin the replacement steps, prepare a clean workspace and have a replacement air filter that matches your engine (1.5L or 2.0L). If in doubt, check your owner's manual or confirm part numbers with a parts retailer.
- Open the hood and locate the rectangular engine air box on the passenger side of the engine bay.
- Release the fasteners or clips holding the lid in place. Some models use clips; others use screws or a combination. Keep track of all fasteners as you remove them.
- Lift or remove the cover and carefully take out the old filter. Note the filter’s orientation so the new one can be installed the same way (look for the directional arrows on the filter).
- Clean any debris from inside the air box with a dry cloth or compressed air if available (do not use liquids).
- Insert the new filter in the correct orientation, reseat the lid, and re-secure all fasteners or clips securely.
- Close the hood and run the engine for a short moment to ensure there are no unusual noises and that the air intake is functioning normally.
Replacing the engine air filter is a routine maintenance task that helps maintain engine performance and fuel efficiency. Check your owner's manual for the recommended replacement interval, which can vary by engine and driving conditions.
Cabin air filter location
Accessing the cabin filter behind the glove box
The cabin air filter for the 2021 Equinox sits behind the glove box, in a rectangular housing. Access typically requires removing or lowering the glove box to expose the filter housing door. The filter supplies air to the HVAC system and helps control odors and contaminants inside the cabin.
Be prepared to support the glove box during access, as some models have stops or dampers that hold it open once you release the right fasteners or squeeze the sides of the glove box.
Before you begin the replacement steps, understand that you’ll need to remove the glove box or drop it down to reach the housing door. Have a replacement cabin air filter ready that matches the Equinox’s specifications.
- Open the passenger-side glove box and, if needed, depress the sides or remove any stoppers to allow the box to drop down fully. In some trims, you may need to remove a panel or screws to access the filter housing.
- Locate and remove the cabin air filter housing door or cover. It may require sliding or unlatching the panel.
- Take out the old filter and note its orientation, usually with arrows indicating airflow. Clean any debris from the housing if necessary.
- Insert the new cabin filter with the airflow arrows oriented toward the HVAC system. Ensure it sits flat and fully seated in the housing.
- Reattach the housing cover, reposition the glove box, and secure any stops or screws you removed. Close the glove box.
Replacing the cabin air filter helps maintain good interior air quality and can improve HVAC performance. The replacement interval varies by environment and usage, so consult the owner’s manual or dealership guidance for a recommended schedule.
Summary
For a 2021 Chevy Equinox, there are two filters to consider: the engine air filter in the under-hood intake box on the passenger side, and the cabin air filter behind the glove box. Both follow relatively straightforward replacement steps, requiring only basic tools and careful attention to orientation. Regular checks and replacements keep engine performance and interior air quality at their best.