🔧 Cabin Air Filter - Replacement

Your Sierra uses a cabin air filter behind the glove box. This is a simple job and usually does not need any special disassembly beyond lowering the glove box and swapping the filter. Keep the new filter oriented the same way.

Difficulty Level: Beginner | Estimated Time: 0.3-0.6 hours

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⚠️ Safety & Precautions

• Turn the ignition off before starting.
• Work gently around the glove box so the hinge stops and damper do not break.
• Do not force the filter cover; it should release by hand.
• No battery disconnect is required for this repair.

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🔧 Required Tools

You'll need the following tools for this repair:

• Flashlight
• Flat trim tool
• 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.
• Switch the ignition off and remove the key or keep the fob away from the truck.
• 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 empty the glove box

• Use your hands to open the glove box fully.
• Remove all items so nothing falls out when the box is lowered.
• Work slowly to avoid broken clips.

Step 2: Release the glove box stops

• Use a flat trim tool only if needed to gently help the glove box side stops clear the opening.
• Push the sides of the glove box inward by hand so the box can swing down farther.
• Lower it carefully until it hangs down and exposes the HVAC access area behind it.

Step 3: Remove the cabin air filter cover

• Use your hands to release the filter access cover behind the glove box.
• If the cover feels tight, use a flat trim tool very gently on the edge.
• Remove the cover and set it aside.

Step 4: Remove the old cabin air filter

• Slide the old filter straight out by hand.
• Watch the airflow arrow direction on the old filter before removing it.
• If leaves or dust are present, wipe the area clean with a dry cloth.

Step 5: Install the new cabin air filter

• Use your hands to slide the new filter into the slot.
• Match the airflow arrow on the filter to the direction shown on the old filter or the housing.
• Make sure the filter seats fully and sits flat.

Step 6: Reinstall the cover and glove box

• Use your hands to snap the filter cover back into place.
• Lift the glove box back up and let the side stops re-engage.
• Close the glove box and make sure it opens and closes normally.

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✅ After Repair

• Start the truck and turn the blower fan on high.
• Check for normal airflow from the vents.
• If airflow is still weak, recheck the filter orientation and seating.
• Replace the cabin air filter every 12,000-15,000 miles or sooner in dusty conditions.

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💰 DIY vs Shop Cost

Shop Cost: $60-$140 (parts + labor)

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

You Save: $45-$105 by doing it yourself!

Shop labor rates vary but typically run $100-$150/hour. This repair takes a shop approximately 0.3-0.6 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.