2013 Cadillac CTS Coupe Cabin Air Filter Replacement Guide

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If your A/C smells musty or the airflow feels weak, it's time to swap your cabin filter. On the 2013 CTS Coupe, this is a 10-minute job located under the hood, not behind the glovebox.

📦 Essentials Checklist

• The Filter: [ACDelco Gold (Original Equipment)] (https://amzn.to/3MJ45tQ) or [Fram Fresh Breeze] (https://amzn.to/4rrJSb6).

• Hand Protection: [Heavy Duty Nitrile Gloves] (https://amzn.to/40djHZB) to keep road grime and engine soot off your hands.

Step-by-Step Instructions

1. Open the Hood: Go to the passenger side cowl area (near the windshield).

2. Peel the Weatherstrip: Pull back the thick rubber seal about 12 inches to reveal the plastic access leaf.

3. Remove the Fastener: Use a 7mm socket from a [Basic Mechanic’s Tool Set] (https://amzn.to/4aFYMmV) to remove the single bolt.

   Note: If a previous mechanic swapped this bolt, your tool set's Phillips or Allen bits will come in handy.

4. Swap the Filter: Squeeze the tabs on the filter door to open it. Slide the old filter out and slide the new one in with the arrow pointing DOWN.

5. Re-assemble: Snap the door shut, replace the bolt (do not over-tighten), and press the rubber weatherstrip back into place.