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The FLASHING light indicates a do not drive situation. This is usually indicative of a misfire. The code will show up and tell you with the use of a code reader. The code will tell you which plug.

Most times it is a bad plug or coil pack. The rich condition created by the misfire will melt your catalytic converter if you continue to drive the vehicle. This is why the light flashes.

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Q: What can you do if your 2003 Chevy Trailblazer is running rough and sputtering and gives you a flashing service engine soon light when accelerating and a steady light coasting?
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Why does the Service engine soon light flash when accelerating but stay lit when coasting in an 2003 trailblazer?

Flashing SEL means do not drive. The cat could melt due to a rich condition probably caused by a misfire. Plug/coil problem. www.trailvoy.com


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speedy; accelerating; flashing; fleeting; quick; rapid


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The Flashing Blade was created in 1967.


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