Check Engine Light Due to Gas Cap Issue on Chevrolet Silverado 1500

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

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Average mileage: 91,762 (44,550–208,700)
3 model years affected: 2008, 2009, 2010
12 people reported this problem
5 people shared problem details
i replaced the gas cap and had the computer reset....3 days later the truck told me to tighten the gas cap again. now the check engine light is back on.
Diagnostic code comes up to say emissions leak and was told preferably to change gas cap, but when I did replace the cap, I unhooked the battery thinking it would reset and if the problem had been resolved then the check engine light would not come back on. Not the case, however, because the light came back on and I am again looking for a resolution.
Engine light comes on- attributed to a sensor for emission control Replaced it but it returned less than a week later
Tighten gas cap fault and engine light on
Want cause white smoke come out the tail pipe
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