Illumination of the Check Engine Light can be caused by a loose or worn gas cap.Google+
Car Problem Reports
Chevrolet Tahoe Check Engine Light Due to Gas Cap Issue
Chevrolet Tahoe Problem
Average Mileage: 121,867 mi (60,000 mi - 243,336 mi)
Visitor, 2003 Chevrolet Tahoe, 243,336 mi
check engine light stays on. Throws four codes
check engine came on and I went to my local O'reilly's and used there machine to diagnosis the problem. The issues was resolves after I took my Tahoe to the dealership to get repaired.
Visitor, 2006 Chevrolet Tahoe, 75,000 mi
my i just unhooked light came on an the sensor throwing the code to get light off
Visitor, 2005 Chevrolet Tahoe, 60,000 mi
OMG, on going gas cap problem and engine light is going on. Way to expensive to pay a company to check the light and make the light go off. Really we need to buy a chip every time at $400. Any cheaper way to get this done??
Please give me ideas.......
Visitor, 2002 Chevrolet Tahoe
Gas cap was lose