🔧 Impala - Cabin Air Filter Replacement

Your Impala’s cabin air filter cleans the air coming through the heater/AC vents. Replacing it helps airflow, reduces musty smells, and keeps dust/pollen out of the cabin.

Difficulty Level: Beginner | Estimated Time: 0.3-0.7 hours

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⚠️ Safety & Precautions

• ⚠️ Turn the ignition OFF and remove the key before working under the dash.
• ⚠️ Avoid forcing plastic panels; they can crack if bent too far.
• ⚠️ Wear safety glasses—dust and debris can fall when the filter door opens.
• ⚠️ Battery disconnect is not required for this job.

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🔧 Required Tools

You'll need the following tools for this repair:

• Safety glasses
• Nitrile gloves
• Flashlight
• Trim panel tool
• 1/4" drive ratchet
• 1/4" drive extension (3"-6")
• 5.5mm socket
• 7mm socket

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🔩 Required Parts

HowToo sells all the parts you need for this repair:

• Cabin air filter - Qty: 1

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📋 Before You Begin

• 🅿️ Park on level ground and set the parking brake.
• Move the passenger seat back to give yourself room to work.
• “Trim panel tool” = plastic pry tool.

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🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Open and drop the glove box

• Open the glove box and remove any items inside.
• Push in on both sides of the glove box (near the top) to release the stops, then let it swing downward.
• If your glove box has a small “damper” strap on the right side, unclip it by hand. (A damper is a small strap that slows the glove box as it opens.)

Step 2: Remove the lower hush panel (if equipped)

• Look under the passenger side dash for the lower trim/hush panel.
• Use a 7mm socket with a 1/4" drive ratchet to remove the screws.
• Use a trim panel tool to gently release any clips, then set the panel aside.

Step 3: Locate the cabin filter access door

• With the glove box dropped, look straight back behind it toward the HVAC housing (black plastic box).
• Find the rectangular filter cover/door.

Step 4: Remove the filter access door

• Use a 5.5mm socket with a 1/4" drive ratchet and extension (3"-6") to remove the small screws from the access door (count varies by cover style).
• Carefully pull the access door off and set it aside.

Step 5: Remove the old cabin air filter

• Slide the filter straight out.
• Use a flashlight to check the filter slot for leaves/debris. Remove loose debris by hand with nitrile gloves.
• Take a photo of airflow arrow first.

Step 6: Install the new cabin air filter

• Match the airflow direction to the arrow printed on the old filter or the HVAC housing.
• Slide the new filter in fully so it sits flat (no buckling).
• If there’s no marking you can find, install the new filter with the airflow arrow pointing down (toward the floor) as is common for this housing style.

Step 7: Reinstall the access door and panels

• Reinstall the filter access door and tighten the screws using the 5.5mm socket and ratchet (snug only—do not overtighten plastic).
• Reinstall the hush panel (if removed) using the 7mm socket.
• Lift the glove box back up and re-engage the side stops and damper strap (if equipped).

Step 8: If you don’t find a filter (important)

• Some W-body cars were built without a cabin filter installed, and you may find an empty slot or a simple block-off cover.
• If there’s a slot and door but no filter inside, you can still install the correct cabin air filter and reassemble.

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✅ After Repair

• 🔁 Start the engine and run the blower on high for 30 seconds.
• Switch between fresh air and recirculation and listen for any rattles (a rattle usually means the filter isn’t seated flat).
• Confirm airflow is stronger and there’s no whistle sound from the glove box area.

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💰 DIY vs Shop Cost

Shop Cost: $90-$180 (parts + labor)

DIY Cost: $15-$35 (parts only)

You Save: $75-$145 by doing it yourself!

Shop labor rates vary but typically run $100-$150/hour. This repair takes a shop approximately 0.3-0.7 hours.

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🎯 Ready to get started?

HowToo makes it easy: same-day/2-day shipping on every part, plus all the tools and specialty tools you need! Check out the parts and tools sections below to add everything to your cart.