Chevrolet » Silverado » 1999-2006

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Submitted by Jose F Contreras on 21:48 pm Thu 08/31/17.

1999 Chevy Silverado 4.3 L catalytic converter glows red

jeffm3
Sep 1, 2017 @ 10:23 am

You have a bad spark plug wire, coil or spark plug. Fuel is making it to the catlatyic converter that's why it is glowing red.

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jeffm3
Sep 1, 2017 @ 10:24 am

Is your car struggling to accelerate or has the check engine light on?

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