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Q: Check engine light stays on on 2005 Chevrolet Equinox

After changing the oil, I got a check engine light. I have no faults according to my scanner and it erases the computer. However, the light is still on?
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Turn the key to on position but dont crank the Vehicle. Push gas pedal 3 times, light should go out.
If the check engine light is on, there must be a code, check the engine and transmission control modules. You may have a scanner that doesn't work on this vehicle, try to use another one.
Turned out to be the catalytic converter bad. Thank you all for your ideas and suggestions.
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