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Chevrolet Prizm Check Engine Light Due to Gas Cap Issue

 
Chevrolet Prizm Problem
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Model Years Affected: 1998, 1999, 2000, 2001, 2002

Average Mileage: 72,750 mi (15,500 mi - 130,000 mi)

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A Loose or worn gas cap may cause Check Engine Light to illuminate.

  • Visitor, , 15,500 mi

    Check engine light: apparently something to do with where you put the gas in.... emission code; have noticed slight decrease in mileage, but still averaging 36-38 mpg city/highway. It is NOT due to the gas cap... the guy told me I would need to replace the whole 'unit' where you put in gas. I haven't.

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