Question about 2004 Chevrolet TrailBlazer

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Check engine light on

Chek engine light continue to come on . All fluids are good and filters are clean, Gas cap has been replaced twice. smoke test was done and it was recommended to change gas tank. Dealership not sure of problem. l

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  • Bruce Bracey
    Bruce Bracey May 11, 2010

    Can you tell me or find out what codes are or were present and we can go from there.

    Regards,

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Check engine light has **** to do with any of what you listed. It only relates to pressures and sensors. Retorque your throttle body, check resistance on your sensors and if that doesn't work change the map sensor. They're bad on these vehicles

Posted on Mar 12, 2009

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