There are two air filters in most 2019 Blazer models: the engine air filter in the engine bay and the cabin air filter behind the glove box.
The engine air filter cleans the air entering the engine for combustion, while the cabin air filter cleans air entering the passenger compartment. Replacement intervals vary by driving conditions and environment; always check the owner's manual or maintenance schedule for the recommended service intervals.
Engine air filter location
The engine air filter's job is to clean incoming air for combustion. In the Blazer, it's housed in a rectangular plastic box in the engine bay, usually on the passenger side toward the front, with a large intake duct feeding it from the grille area.
Here's how to locate and replace the engine air filter.
- Park on level ground with the engine cool and set the parking brake.
- Open the hood and locate the rectangular black plastic air box in the engine bay on the passenger side near the front; a hose from the air box feeds toward the throttle body.
- Release the clips or remove screws securing the lid, then lift the cover to expose the filter element.
- Remove the old filter, inspect the housing for debris, and note the filter orientation (there is usually an arrow indicating airflow).
- Insert a new filter with the same orientation and reseat the lid, securing all clips or screws firmly.
- Reconnect any hoses, start the engine, and confirm normal operation without unusual sounds or idle issues.
The engine air filter replacement steps above apply across common Blazer engine options, including the 2.0L turbo and 3.6L V6. If you’re unsure about the exact housing or clips, consult the owner's manual or a repair guide for your VIN.
Cabin air filter location
The cabin air filter for the 2019 Blazer is typically located behind the glove box on the passenger side. Access requires opening and lowering the glove box, then removing the filter housing cover to reach the filter element. The exact steps can vary slightly by trim, but the general process remains the same.
Here's how to locate and replace the cabin air filter.
- Park with the vehicle off, then open the glove box and gently remove contents.
- Look for the glove box stops on the sides. Push inward or release the stops to allow the box to drop down further.
- Behind the glove box, locate the cabin air filter housing and remove the cover.
- Take out the old filter, inspect the housing for debris, and note the orientation of the filter arrows.
- Insert a new filter with the arrows pointing in the correct direction, then reattach the housing cover.
- Lift the glove box back into place and snap the stops back in; ensure the glove box closes properly.
Replacing the cabin air filter helps maintain interior air quality and HVAC efficiency; regular replacement is recommended based on driving conditions and manufacturer guidance.
Summary
In a 2019 Chevrolet Blazer, there are two filters to consider: the engine air filter sits in a rectangular housing in the engine bay on the passenger side, while the cabin air filter sits behind the glove box on the passenger side. Both are accessible with basic tools and a bit of patience, and replacing them as part of routine maintenance can improve engine performance and interior air quality.