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The video above shows you how to replace the battery in your 2004 Cadillac DeVille. We recommend changing the battery in Cadillacs every 4 years. Although some batteries last much longer, most batteries begin breaking down chemically after four years, so you could experience dimmer headlights and other negative effects before you have a dead battery in your DeVille that you need to replace.
Replacing the battery in your DeVille involves removing the terminals. When you reconnect the terminals, your radio presets are likely to be cleared out. In some DeVilles, you may need to re-enter a security code to get your radio to work again. Check for this code in your owners manual - it will usually be either a sticker or small card in the booklet. If you can't find it, call Cadillac and they will give you the code for free. In many Cadillacs, the transmission "learns" how you drive over time and makes adjustments, so you may experience altered driving dynamics as your car re-learns your driving style after changing the battery.
Do you ever get into your friend's car and notice a bad smell? A dirty cabin air filter could be the culprit2004 Cadillac DeVille DTS 4.6L V8
Minor transmission fluid leaks can often be fixed with the right sealant - see how to do this2004 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
On many cars, the high beam bulb runs at reduced power during the day - check 'em and change 'em!2004 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
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