🔧 Cabin Air Filter - Replacement

Your cabin air filter traps dust, pollen, and debris before air reaches the vents. Replacing it helps keep airflow strong and the air inside your Sierra cleaner.

Difficulty Level: Beginner | Estimated Time: 0.5-1 hour

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⚠️ Safety & Precautions

• Turn the ignition off and remove the key or fob from the vehicle.
• Let the glove box and dash area cool if the vehicle was recently run.
• Be gentle with plastic tabs and stops; they can crack easily.
• No battery disconnect is required for this job.

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🔧 Required Tools

You'll need the following tools for this repair:

• Trim panel removal tool
• Small flat-blade screwdriver
• Flashlight
• Gloves
• Safety glasses

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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.
• Make sure the blower fan is off.
• Open the glove box and clear out everything inside.

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🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Open and support the glove box

• Open the glove box fully.
• Use both hands to let it hang down slowly once the stops release.
• Move slowly to avoid breaking tabs.

Step 2: Release the glove box damper and stops

• Use a small flat-blade screwdriver or your fingers to gently unclip the glove box damper on the side.
• Press inward on the glove box sides to clear the stops and lower the box fully.
• If equipped with a trim retainer, use a trim panel removal tool to pop it free.

Step 3: Locate the cabin air filter door

• Use a flashlight to find the rectangular filter cover behind the glove box area.
• Remove the cover tabs carefully by hand or with the trim panel removal tool.

Step 4: Remove the old filter

• Slide the old filter out slowly.
• Note the airflow direction arrow printed on the filter frame.
• Take a photo before removing it.

Step 5: Install the new filter

• Insert the new cabin air filter in the same direction as the old one.
• Make sure the filter seats flat and fully inside the housing.
• If the filter has an airflow arrow, point it the same direction as the old filter or toward the cabin side if marked that way on the filter.

Step 6: Reinstall the cover and glove box

• Reinstall the filter door and press it until it clicks in place.
• Lift the glove box back up and snap the side stops back into position.
• Reattach the glove box damper.

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✅ After Repair

• Turn the blower on and check for normal airflow.
• Listen for rattles from the glove box area.
• If air still smells musty, check for moisture in the HVAC system.

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💰 DIY vs Shop Cost

Shop Cost: $70-$140 (parts + labor)

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

You Save: $55-$105 by doing it yourself!

Shop labor rates vary but typically run $100-$150/hour. This repair takes a shop approximately 0.5-1 hour.

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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.