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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!
Many cars will burn or leak a little bit of oil. Over time, this adds up and you might need to add some - learn how to here!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
Power steering fluid is easy to check and many people (mechanics included) often forget about - learn how here2004 Cadillac DeVille DTS 4.6L V8
Stop! Checking your brake fluid from time to time is a great way to ensure safe stopping2004 Cadillac DeVille DTS 4.6L V8
If your brake fluid is a little low, learn how to add some here. Ignoring a low level leads to big problems2004 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