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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.
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
If your blinker doesn't blink, or blinks rapidly, you likely have a burnt out bulb2004 Cadillac DeVille DTS 4.6L V8
Harsh downshifts? Slipping gears? You might be low on transmission fluid2004 Cadillac DeVille DTS 4.6L V8
If you have an electrical component that doesn't work, try replacing the fuse first2004 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
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