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Can fuel from certain gas stations cause a engine light to come on ?

(2003 Chevrolet Avalanche 1500)
in Dunlevy, PA on May 01, 2012
Replaced both kock sensors a one year ago. Now having a problem with engine light coming on (knock sensor low voltage input) when I fill up at certain gas stations. Light stays on until next fill up, then goes out after a few miles on the new tank of gas.
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Popular Answer
of Greg's Orange Auto on May 01, 2012
i guess anything is possible. yes gas could be water down.try a higher octane fuel like 89 instead of 87 that might help
on October 22, 2013
Yes, bought Cheap gas several times . After awhile smelled like sulfer, rotten eggs, light came on. Filled tank with high octane gas twice light went off. Did not use that gas again and had no problems.
on January 11, 2013
yes and if you dont get a good seal on your gas cap it will do the same
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