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Lots o leather and copper
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1,680 Posts
Sounds like an issue with the evap system since it only happens after filling the tank. I know there was a design issue with the 1st gen filler neck that caused problem but I believe it was fixed before the 06 model year. Try only filling to 3/4 of a tank and see if it happens. If not then it might be over filling and backing up in the filler neck.
 
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