2006 chevy truck...
04-12-2007, 08:17 PM
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St. Jude Donor '15
If you have OnStar, hit the blue button and have them read the code. The most common cause is a loose gas cap. Tighten the gas cap and then drive the truck 3-5 times allowing it to warm up fully each time. If it was the gas cap, the light should go out.