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GMC Sierra 1500 Problems

Check Engine Light Due to Gas Cap Issue on GMC Sierra 1500

Problem Description and Possible Solution

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

(16 people reported this problem)

GMC Sierra 1500 Vehicles With This Problem

RepairPal Verified
Average mileage: 58,715 (15,792–130,000)
3 model years affected: 2007, 2008, 2009
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Viewing 1-4 of 4 comments
Engine Light came on. Service department hook the car up to the computer and the error message read that there was an issue with the gas cap. When checking the gas cap it was still loose not tight. Once gas cap was typing error message did not reappear.