Check Engine Light Due to Loose or Worn Gas Cap on Cadillac STS-V

Problem Description and Possible Solution

A loose or worn gas cap could be cause the Check Engine Light to illuminate.

Problem Data
RepairPal Verified
Average mileage: 75,000 (75,000–75,000)
4 model years affected: 2006, 2007, 2008, 2009
5 people reported this problem