Before you begin: Consult your owner's manual. It's the single best source of information for your specific truck. The manual will tell you if your truck even *has* a cabin air filter and where it's located.
If your owner's manual doesn't clarify the location or if you don't have it, here's a general approach and where it *might* be:
Possible Locations and General Procedure:
1. Under the glove box: This is the most common location.
* Access: You'll likely need to remove the glove box. This usually involves releasing clips or screws holding it in place. Be gentle to avoid breaking anything. Consult a repair manual or online videos for your specific year and model if needed.
* Filter Replacement: Once the glove box is out of the way, you should see the cabin air filter housing. It might be a simple plastic box with a latch or clip. Open it, remove the old filter, and install the new one ensuring the airflow direction arrow on the filter matches the arrow on the housing.
2. Behind the glove box: Sometimes, the filter is located behind the glove box, accessed through a small access panel.
* Access: Look closely behind the glove box for a small access panel (often covered by a small plastic cover). You might need a small flathead screwdriver to carefully pry it open.
* Filter Replacement: Once the panel is removed, the filter should be visible. Replace it as described above.
3. Under the dash (rare): In some rare instances, it might be accessible by reaching under the dashboard, but this is less common on 1999 Silverados.
Important Considerations:
* Type of Filter: Make sure you buy the correct replacement filter for your 1999 Chevy Silverado. The dimensions and type (carbon, standard, etc.) are crucial. Check your owner's manual or the old filter for this information, or check a reputable auto parts store's website.
* Tools: You'll likely need a flathead screwdriver (possibly a Phillips head as well, depending on your glove box removal process) and potentially a flashlight.
* Online Resources: Searching YouTube for "1999 Chevy Silverado cabin air filter replacement" will likely yield helpful videos showing the process for different trim levels. Be sure to check the year and model of the truck in the video to make sure it matches yours.
If you're uncomfortable working on your vehicle, take it to a mechanic. Improperly removing components can cause damage.
