2006–2011 Cadillac DTS
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 2006–2011 Cadillac DTS is rated Easy and takes about 10 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 2006-2011 Cadillac DTS; 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
The DTS carries the DeVille's unusual layout: its cabin filter is NOT behind the glove box. It's under the hood at the windshield base on the passenger side, under a snap-on cover. Don't let anyone send you into the dash.
Prop the hood open. At the windshield base on the passenger side you'll find the small cover over the filter opening. Press the two push tabs inward and lift it off — the only removable piece on the cowl.
Look down into the opening: the compartment has a retaining lever on its left side. Push it outward to release it. Note the old element's orientation — which edge is up, which way the arrow points; the new one matches.
With the lever pressed outward, grip the top edge and slide the filter up and out. These cowl filters come out grimy: expect black dust, leaves, and pine needles packed against the pleats. Flick the loose debris out first.
Press the lever outward, slide the new filter in long side first, airflow arrow down from cowl into blower, and push it fully home so the lever captures it. Found an empty slot? Install the filter anyway — some cars left the line without one.
Here's what I do: That access cover has to sit dead flat when you're done — a crooked cover pours rainwater straight onto your new filter. Press it down and run a finger around every edge before you walk away.
Place the access cover over the opening and press down until both push tabs click. It must sit flat and flush with the cowl — a crooked cover lets rainwater pour onto your new filter. Check the edges all around.
Close the hood and start the car. Run the HVAC on high in fresh-air mode and confirm stronger, musty-free airflow. Check yearly — leaves clog it long before the media wears out.
Test your repair before closing everything up. If something doesn't work right, double-check your steps.
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