disconnect the battery for 1 minute and it will reset.
have vehicle scanned to determine the problem - usually in the emission control system
How do I reset the service engine light on a 2003 Chevy Trailblazer?
Go to Auto Zone and have the computer codes read for free.
A flashing check engine light is an indication of a misfire.
Maybe you should service the engine soon. :P
can you tell me why my 1999-2000 Chevy trailblazer light is on
Check
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.
To reset the "Service Engine Soon" light on a 1992 Chevrolet Astro, you can disconnect the battery for about 15 minutes. This will clear the engine codes and reset the light. Alternatively, you can use an OBD-I scanner (if available) to clear the codes. After resetting, ensure that any underlying issues are addressed to prevent the light from coming back on.
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That requires an OBDII engine scanner.
That means that the computer see's a problem with the emmission system are the transmission. Need to have engine scaned with a engine scanner to see what is going on.