Illumination of the Check Engine Light can be caused by a loose or worn gas cap.
Problems for specific Cadillac DeVille years:
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Most reported 2001 Cadillac DeVille problems
The rubber section of an automatic transmission cooler line may develop a fluid leak . In some cases the leaking section of hose can be replaced. In others, the complete cooler line must be replaced to correct this concern.
The steering wheel position sensor may fail, resulting in the service stability message being displayed.
Just started last week. This warning has always lit up if I make a sudden stop, but then goes away. Last week it did not go away and now stays on all the time, even though the coolant level is fine.
i got trapped in the tranny replacement thinking i would never have to worry about it again, hah 2 months after the warranty its back. 3year 100,000 miles warranty and 40,000 miles later the 4000 dollars i had put in the car is all for nil. this motor drivetrain has so many service bulletins it is a another high end GM rip off,that was junk to begin with and Cadillac wont own up to it. Lets see a 70,000 dollar throw away my house was a bit mor...