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why won't my gas cap warning on dash window go off?? i went and bought new cap and put good gas in it and reset it on dash and its still staying on and even with my other new locked gas cap it still stays on with both new caps.Engine light went on and still stays on before the gas cap light warning came on than the oil chage light cam on after that so now all 3 are on..i watched u-tube have done all of everything to fix it..Engine light has been on 1st for about 3weeks maybe a month..its running good ot using fue. bought both different kinds of new cabs for it,light still comes on..i set it on the trip button it goes off for a few minutes but comes back..engine light does nothing but stays on.i tripped the change of oil light off though im puzzled..please help :) :)

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