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Discussion Starter #1
I have a 2006 SS and the tighten gas cap reminder flashes on the dash computer. A few drive cycles later the check engine light comes on. I replaced the gas cap and reset the code and the same thing happens a few days later. The trouble code states there is an emissions leak. Any ideas?
 

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I have same issue... with a 06 impala...
Reset the dash and the gas cap tighen comes on and then 5 to 10 minutes later the check engine soon light comes on as well... wtf?
 

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8th Gen Antagonist
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13,660 Posts
Probably evap canister purge valve, but not certain.
 

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You will need to have the vacuum system of the evap checked. Could be the purge solenoid or a bad hose or even the canister.
 
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