2020–2024 Cadillac CT5
By Tom Becker ✓ Certified Mechanic · Published Sep 21, 2026 · Updated Oct 22, 2026
Save $72 by doing it yourself! Shop cost: $100
Quick answer: Cabin Air Filter Replacement on a 2020–2024 Cadillac CT5 is rated Easy and takes about 10-15 minutes. No tools are required for this job, and parts cost about $28. This guide walks you through the full job step by step, including the mistakes to avoid.
| Part Name | Part Number | Price | Buy |
|---|---|---|---|
| Cabin air filter for 2020-2024 Cadillac CT5; verify arrows, size, and VIN/trim fitment | — | $28.00 |
About prices: shown prices are typical retail averages and change frequently; cheaper alternatives may be available. Confirm the current price before buying.
💡 Pro tip: Order all parts at once to save on shipping
Follow these steps carefully
Open the glove box fully and remove every item — the CT5's box is deep, and loose items will tumble into the dash cavity once the box drops. Work with the ignition off and the key out.
Look at the right side of the open glove box for the damper arm — the small strut that slows the glove box as it opens. Once the arm is free, lower the glove box by hand than letting it drop.
In my experience this matters: Handle it gently: the damper arm is thin plastic, and on the CT5 it is the part most often broken by owners who skip this step.
The side stops will clear their dash catches, allowing the glove box to swing down past its normal open position and hang on its lower hinges.
Squeeze both tabs inward toward each other and pull the cover straight off the housing. Set the cover on the passenger seat. The cabin filter cover has a release tab on each side.
Grip the old filter and pull it straight out of the housing toward you, keeping it level so the trapped dust stays in the pleats.
I've been burned by this before: CT5 filters often come out with a heavy gray loading of road dust and pollen, and on cars parked under trees you will find leaf fragments packed along the intake edge.
Slide the new filter into the housing with its airflow arrow pointing the same direction as the old filter's arrow. Refit the filter cover by aligning it with the housing and pressing until both side tabs click into place.
Swing the glove box back up, press the side walls in so the stops snap past their catches, and reattach the damper arm to its pin on the right side. Open and close the glove box to confirm the smooth damped motion and a square latch. Start the engine and run the climate system on high in fresh-air mode through the dash, floor, and defrost vents: airflow should be strong and even, with no whistling from behind the dash and no rattles over bumps. Replace the CT5's cabin filter about once a year or every 12,000 to 15,000 miles — sooner with dusty driving, allergies, or heavy city traffic. Log the date and mileage.
Test your repair before closing everything up. If something doesn't work right, double-check your steps.
⚠️ Common Mistakes to Avoid
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