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The cabin air filter in your 2004 Cadillac DeVille filters the air that is blown from your heater or air conditioner into the cabin of your DeVille. You need to change it at least once a year or every 20,000 miles. Replacing the cabin air filter (also know as the dust filter, hvac filter, pollen filter, air conditioner filter and hepa filter) will improve the air quality of your DeVille, will put less strain on your heating and air conditioning system and can increase your gas mileage. These filters are fairly inexpensive, so check out our parts page for great deals on a new one (tip: buy several - they don't expire and you will be able to quickly swap the old one out for a fresh one).
Not all Cadillacs have a cabin air filter and for some models, the inclusion of a cabin air filter depends on what trim level you have (DTS). Newer cars are more likely to have a cabin air filter than older models. If your DeVille has a funky odor when you turn on the heat or air conditioner, or it seems like the fan doesn't work as well as it used to, replacing your cabin air filter is a quick and cheap fix! The video above shows you the cabin air filter location in your DeVille and how to change it!
Don't be caught in the fog with burnt out fog light bulbs2004 Cadillac DeVille DTS 4.6L V8
Harsh downshifts? Slipping gears? You might be low on transmission fluid2004 Cadillac DeVille DTS 4.6L V8
If your battery has green or white cruddy deposits, it is probably not getting enough juice from and will likely wear out sooner2004 Cadillac DeVille DTS 4.6L V8
A check engine light can be cleared with a simple fix or it could be a major problem - find out now!2004 Cadillac DeVille DTS 4.6L V8
Odd electrical problems that come out of nowhere can often signify a blown engine fuse - check and change yours here!2004 Cadillac DeVille DTS 4.6L V8
Transmissions that leak fluid usually have never been flushed and the seal is finally leaking. The right stop leak product can cure a lot2004 Cadillac DeVille DTS 4.6L V8