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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!
Leaking coolant is usually a sign that your water pump needs to be replaced. This video shows you how to quickly plug it2004 Cadillac DeVille DTS 4.6L V8
Want an easy way to save $500? Rotate your tires at least three times per year2004 Cadillac DeVille DTS 4.6L V8
Replacing a dirty air filter can improve gas mileage by up to 4%. Isn't efficiency great?2004 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
There's no reason to check the washer fluid level without adding some - see how to do it here!2004 Cadillac DeVille DTS 4.6L V8