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The engine in your 2004 Cadillac DeVille should be running when you perform a transmission fluid level check, otherwise it will be inaccurate. The video above shows where the transmission fluid dipstick is located in your DeVille and how to check the transmission fluid level. If the transmission fluid level in your DeVille is low, you need to add transmission fluid through the dipstick tube. When adding transmission fluid to your DeVille, be sure to add it slowly as it will fill up quickly and is difficult to remove excess fluid if you overfill.
If you are having problems with the transmission in your DeVille, such as clunky shifting or hesitation, check the fluid level first - it is amazing how many drivers pay thousands of dollars for transmission work when a half quart of transmission fluid would have fixed the problem.
Minor transmission fluid leaks can often be fixed with the right sealant - see how to do this2004 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
Don't be caught in the fog with burnt out fog light bulbs2004 Cadillac DeVille DTS 4.6L V8
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
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
Small bulbs that burn out regularly - did you know you can replace these with LED lights?2004 Cadillac DeVille DTS 4.6L V8