Check Engine Light Due to Gas Cap Issue on Cadillac CTS-V

A Loose or worn gas cap may cause Check Engine Light to illuminate.

RepairPal Verified
Average mileage: 67,093 (55,170–88,109)
6 model years affected: 2004, 2005, 2006, 2007, more2009, 2010
10 people reported this problem
3 people shared problem details
My computer notified me that I should "check gas cap" and now my "check engine light" is on.
2007 Cadillac CTS-V55,170
My Check engine light comes on after I fill up with Gas. that has happened the last 3 times I filled up.
Front light always out
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