It means the computer has detected a problem with the emissions system. It could be a number of things. Have the computer scanned to recover the code. This will help you determine what the problem may be.
You need to have it checked for codes. If you fix the cause of the codes the light will stay off.
take it to autozone they will check for free. wolverine Probably some problem with the smog controls. Probably nothing too major. If the service engine light is flashing, it's probably major.
How do I reset the service engine light on a 2003 Chevy Trailblazer?
Maybe you should service the engine soon. :P
can you tell me why my 1999-2000 Chevy trailblazer light is on
Check
on mine i just changed the o2 sensor located in the front by fan
When service engine light is on on a 2003 Chevy Trailblazer, the problem could be a faulty thermostat, a circuit range performance problem, or any other problem.
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There are pages and pages of things that can cause a check engine light. You need to have it checked with a scantool. Then the code can be diagnosed and repaired.
That requires an OBDII engine scanner.
The check engine light (service engine soon) comes on and stays on when a problem is detected by the self diagnosis system of your vehicle.