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

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

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Average mileage: (–)
Exhaust & Emissions affected: Gasoline
4 model years affected: 1996, 1997, 1998, 1999
5 people reported this problem
1 person shared problem details
have turned light off many time but occurs a lot. the cap is turn several times and reset.
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