Check Engine Soon light stays on on 2006 GMC Envoy

The check engine soon light came on and will not go back off. When it came on, I checked a few things like the gas cap, added 10 litres of mid-grade fuel but light remained oon. I then checked the engine oil and it was just a little low so I put in approximately 3/4 of a pint of oil. I then had to drive back home (1 hour drive) and when I got there, I checked the engine oil again and there was still approximately 3/4 of a pint missing. Am I looking at seroius engine problems or could this be just a minor problem. I just bought this vehicle 4 months ago at a used car dealership. Thank You (Hope someone can help me with this) Michel

by in Albertson, NY on March 21, 2010
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1 answer
ANSWER by , April 10, 2010
check engine light does not have anything to do with your oil level. it is an emissions issue. you need to have code pulled to lead you in the right direction for repairs. Roy