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Q:

Can I fix the problem on 2004 Chevrolet Avalanche 1500

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
Engine light stays on
(1) Answer
The only thing you can really do is check and make sure your gas cap is tight. If it isn't , I would tighten it and drive for a couple of days to see if the light resets itself. Other then that you need a scan tool and qualified technician to properly diagnose and repair the light. If the light is blinking I would get it looked at right away, that means you have a condition that is currently happening the can potentially damage the catalytic convertor.