Check engine light on code P0496

Discussion in 'General Chevy & GM Tech Questions' started by thacker, Jan 27, 2011.

  1. thacker

    thacker New Member

    I have a 2006 6.0L silverado and the check engine light just came on I have 64,500 some miles on the truck. I have checked the gas cap and it seems to be on there tight, the code says that it is evaporative emission system high pressure flow what does that exactly mean? If anyone could help it would be greatly appreciated, thanks in advance.
     

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