Question about 2005 GMC Yukon Xl Denali

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Engine light came on this morning. Staying on solid. Seems to be running fine. I put gas in after i saw the engine light on. It's still on. Tire pressures seem fine. Manual says it has something to do with emissions. what does this mean?

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If the light was flashing when it came on, then it means your engine is misfiring.

A solid light can mean anything.

This light comes on when the computer detects a fault of some sort in its diagnostic tests. If it keeps detecting this issue, the light will remain off. If the light turns off, then it has detected that the issue may no longer be present.

In order to find out what the exact reason was for your light, You need to have your car computer scanned to retrieve the code that the computer would have stored when the light triggered. Most garages will do this free of charge. The code will tell you what may have caused the light to initially go

Posted on Sep 29, 2009

Testimonial: "thanks for info! will take it to garage to see what's up."

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