Illumination of the Check Engine Light can be caused by a loose or worn gas cap.
Problems for specific Cadillac Escalade years:
Car problem reports
Problem with your car? See what our experts say or submit your own.
Most reported 2009 Cadillac Escalade problems
The alternator may fail causing the battery to go dead, or an abnormal noise may develop. The dash warning light may or may not illuminate. A failed alternator will require replacement.