Check Engine Light Due to Gas Cap Issue on Pontiac Solstice GXP

Problem Description and Possible Solution

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

Problem Data
RepairPal Verified
Average mileage: 66,500 (60,000–73,000)
3 model years affected: 2007, 2008, 2009
5 people reported this problem
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Gas fumes in the interior of the car. No system alert light for several weeks. No signs of gas leak. No exterior smell.