Pontiac G8 2008-09 & Chevrolet SS 2014+ LSX based RWD 4-door sedans

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Old 10-15-2010, 09:06 PM
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I posted this somewhere else on here but why does my check engine light come on when I get below 1/2 tank of gas. Onstar says cap is loose but it isnt. Fill it up and light goes out after a few miles.
Old 10-15-2010, 09:29 PM
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Originally Posted by nitrousjunky
I posted this somewhere else on here but why does my check engine light come on when I get below 1/2 tank of gas. Onstar says cap is loose but it isnt. Fill it up and light goes out after a few miles.
Maybe the cap is bad
Old 10-15-2010, 09:42 PM
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I vote change the gas cap and then remove the onstar box.




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