Question about 2002 Chevrolet TrailBlazer

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Its acts like it is missing out but when your going down the road it runs ok and the check egine light is flashing

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  • Master
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Hello whitty_74...Generally, a check engine light is triggered when there is a problem in the emissions or something that is affecting the effectiveness of the emissions...a sensor has detected a problem and has sent a fault code to the engines computer. A "FLASHING" light typically means that something more SERIOUS has been detected (like a missfire) than a light that is on constant. You will need to have an onboard diagnostic scan run on the engines management system...the fault codes will be retrived,,,from that information the proper repair procedures can be determined. Your local Autozone will scan your vehicle free of charge and explain the trouble codes to you.
I suggest you have this done as soon as possible to prevent other problems.
Good luck...i hope this helps...please rate me a fixya.

Posted on Jul 29, 2009

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  • Chevrolet Master
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If there an Auto Zone in your area, have the trailblazer scanned for the DTC codes which is indicated by the check engine light flashing. The ECM has detected an issue and needs to be addressed, Auto Zone scan free of charge and can give you the recommendations to addressing the issue with your power train and give you the step by step instruction to doing the repairs. 
Good luck and keep me posted, be glad to answer any more questions yu may have. 

Posted on Jul 29, 2009

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Posted on Jan 02, 2017

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