Colorado - Cabin Air Filter Replacement 🌬️

On your Colorado, the cabin air filter is located behind the glove box on the passenger side.

Safety & Prep ⚠️

• ✅ Park safely: Flat surface, engine off, key out, parking brake on.
• ✅ Protect your eyes: Wear safety glasses if you have them.
• ✅ Keep the fan OFF: HVAC (AC/heat) blower should be off while you work.

Tools & Parts Needed 🧰

• 🧩 New cabin air filter (for 2018 Colorado, “cabin air filter” / “pollen filter” – rectangular, behind glove box)
• 🪛 Trim tool or flat plastic pry tool (a plastic tool to gently pop panels without scratching)
• 🧤 Gloves (optional, keeps hands clean)

Tip: Have a small vacuum handy to clean leaves/dust in the filter housing.

Colorado - Accessing the Cabin Filter 📦

The glove box on your Colorado uses side “stops” to keep it from dropping. You’ll lower the glove box to reach the filter door.

1. Open the glove box 🚪
   • Pull the glove box handle and let it swing open fully.
   • Remove any items inside so nothing falls out when you lower it.
2. Release the glove box side stops 🔧
   • On each side of the glove box, near the back, you’ll see a small plastic stop tab that hits the dash frame.
   • Gently push the right side of the glove box inward (toward the center of the truck) to clear the stop from the dash opening.
   • Do the same on the left side. The glove box will now swing down farther, toward the floor.
   • Go slow so you don’t snap the plastic tabs.
3. Lower the glove box fully ⬇️
   • Let the glove box hang down so you can see behind it.
   • Behind the glove box you’ll see a rectangular plastic cover on the HVAC box – this is the cabin filter access door.
4. Remove the cabin filter access door 🚪
   • The door usually has small side clips or tabs.
   • Press the clips inward with your fingers (or gently use the plastic trim tool) and pull the door straight off.
   • Set the door aside where you won’t lose it.
5. Slide out the old cabin filter 🧹
   • Grab the edge of the filter and pull it straight out toward you.
   • Note the airflow arrow printed on the side of the old filter and which way it was pointing.
   • On the Colorado, airflow is typically from top to bottom (arrow points down), but always match what you see.
6. Clean the filter housing (optional but recommended) 🧽
   • Use a small vacuum to remove leaves, dust, or debris inside the filter slot.
   • Do not push debris deeper into the HVAC box.
7. Install the new cabin filter 🆕
   • Find the “AIR FLOW” arrow on the new filter.
   • Orient it the same way as the old one (usually arrow pointing down).
   • Slide the new filter straight into the slot. It should fit snugly but not be forced.
   • If it catches, pull it back out, check that it’s not twisted, and try again.
8. Reinstall the access door 🔒
   • Align the bottom tabs of the door with the housing (if present).
   • Push the door in until the side clips click into place.
9. Raise and reattach the glove box 📁
   • Lift the glove box back up into its normal position.
   • Push each side inward slightly again so the side stops go back past the dash opening, then let them rest on the dash frame.
   • Close the glove box normally.

Final Checks ✅

• 🌡️ Turn the ignition on (engine can be off), set the fan to medium, and check for normal airflow and no unusual noises.
• 📝 If airflow is weak or noisy, the filter may be mis-seated; reopen and confirm it’s flat and fully inserted.

Service Tips 💡

• 🧭 In dusty areas, replace the cabin filter about every 12 months or 15,000 km, or sooner if airflow drops or you smell musty odors.
• 🪙 Always install the filter with the airflow arrow in the correct direction – this matters for filtration and noise.

If you’d like, tell me what brand filter you’re using and I can confirm the correct airflow direction marking for that specific part.

HowToo makes it easy: below this answer you’ll see recommended cabin air filters and any simple tools you might need. You can add them to your cart directly from the parts section for fast shipping! 🚚