2006 Chevrolet Silverado 1500

Intermittantly the check engine light will come on and the check gas cap loose . It will stay on for about as long as the weather is above 88 and then it seems fine. What can I do to keep the light from coming on. Is there and update to the computer?

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  1. Generally this happens in warmer weather because the EVAP Purge Solenoid Valve seals leak in warmer conditions as they get older. You may replace the purge valve or not as it will not effect your fuel mileage or performance in anyway.

    As of Today, I do not find any update for this issue for the Engine Computer.

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