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.
Problems for specific Cadillac DeVille years:
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Most reported 2000 Cadillac DeVille problems
Illumination of the Check Engine Light can be caused by a loose or worn gas cap.
The steering wheel position sensor may fail, resulting in the service stability message being displayed.