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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!
Low coolant levels is all to common - top yours up today2004 Cadillac DeVille DTS 4.6L V8
If your car is leaking a small amount of power steering fluid - see this video on how to fix the leak2004 Cadillac DeVille DTS 4.6L V8
See how to seal up minor power steering fluid leaks2004 Cadillac DeVille DTS 4.6L V8
Because you have to start somewhere2004 Cadillac DeVille DTS 4.6L V8
The best way to fix leaking hoses is to replace them, but if you don't have time, a stop leak product might work for you2004 Cadillac DeVille DTS 4.6L V8
Learn where your spare tire and jack are located before you need it on the side of the road2004 Cadillac DeVille DTS 4.6L V8