Check Engine Light Due to Gas Cap Issue on GMC Canyon

Illumination of the Check Engine Light can be caused by a loose or worn gas cap.

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Average mileage: 88,058 (28,000–160,000)
8 model years affected: 2004, 2005, 2006, 2007, more2008, 2009, 2010, 2016
27 people reported this problem
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Viewing 1 - 10 of 10 problem details
2005 GMC Canyon 118,000 mi,
My engine light comes on and my engine idles rough, but as soon as the light goes off (randomly) the engine runs fine. The gas cap light comes on my dashboard warning me the it is not secured, I twist of the cap and put it back on, sometimes this will trigger the warning to go off and everthing is fine. That would be wonderful it that was all it was. I am replacing my plugs, air filter and fuel filter to see if these contribute to the light being on.
2005 GMC Canyon 70,000 mi,
rough idle and engine would gas cap and problem was fixed.
Check engine light... ..turned off after replacing gas cap.. ... came on again.. months later.. not fixed with another gas cap.. Check engine light is on again.. Going to have diagnosis done.. but Terrified of being 'sucked into' the nightmare of "single woman.. unknown problem" .. gotcha.. with Mechanics..!!! Mass air flow sensor? OMG.. not the catalytic converter!!
2006 GMC Canyon 90,000 mi,
I have the same problem with the gas cap
2006 GMC Canyon 28,000 mi,
check engine light comes on after a few miles of driving
2005 GMC Canyon 160,000 mi,
I am buying my 4th gas cap. original lasted ~95k, two after market failed during next 60k.
check engine light on
2008 GMC Canyon 47,000 mi,
check engine light not going off- bought new cap