Then google your code to see what's up. enginecodes. com can help with code definition and likely causes.
If this is something you can deduce on your own. make correction and retry, you can have the code erased.
If not, leave it, and see what your tech recommends.
These vehicles may not reset a code till a complete drive cycle has been experienced by the system.
This is a good time for your tech to look at the rest of your tuneup and maintenance to see if you are lacking something that was overlooked or postponed. As well as things that you may not see or perceive as problems.
When that light comes on it is alerting you that a trouble code is stored in the cars computer. Wheel in to almost any chain auto parts outlet and they will read the code for free. Mystery solved!
the list is so very long from a loose gas cap to a number of other issues. pull the codes and do not waste time guessing.
Take it to a parts store. They'll usually run a check free. Might be something simple like a damn gas cap.
Get a Saturn
my 2006 chevy trailblazer has had the check engine light coming on for the past 2 years..i bought the car used like 3-4 years go from a dealership. it comes on then goes off by itself. anyone else have this problem? it just came on again yesterday and i just had my car looked at a few months ago and got new brakes, tires etc ($1600) my car isnt driving any different and all the levels seem good and i get my oil changed when i am supposed to.