honestly, it could be a number of things and unless you have access to the computer in your car its best to take it to a gm station.
You can get the computer scanned for trouble ocdes for free at most of the large national parts store chains.
Check engine is an error. You have to go at a garage to see what is the error code, then correct the problem.
You need to connect a OBD-II Scanner to find out.....
It requires a scanner to properly diagnosis a check engine light.
To reset the check engine light on a 2003 Chevy Impala, you can disconnect the negative battery terminal for about 10-15 minutes. This will clear the engine control module's memory. Alternatively, you can use an OBD-II scanner to read and clear the trouble codes, which will also turn off the check engine light. Keep in mind that if the underlying issue isn't resolved, the light may come back on.
Either try disconnecting thebattery for about 10 mins. or have vehicle scanned to determine the problem
To reset the check engine light on a Chevy Impala, you can disconnect the negative battery cable for about 15 minutes, which clears the vehicle's computer memory. Alternatively, you can use an OBD-II scanner to read and clear the error codes that triggered the light. If the underlying issue has been resolved, the light should turn off. Always ensure that any problems are addressed before resetting the light to avoid potential damage.
Replace your thermostat had same problem it sets a code but no check engine light
How do you reset check engine light for the 2009 Chevy trail blazer?
Several things could cause the 2001 Impalas check engine light to stay on. Since so many things could be wrong, check the computer codes for any leads on possible problems.
Use an OBD scan tool to reset or disconnect the battery
It means that the engine computer has detected a malfunction that will affect the emissions of the vehicle.
You can either bring it in to a Chevy dealer or use a programmer/tuner to reset the check engine light.