A lot of parts stores will read them for free. ie: Autozone, ......
Take it to the dealer. Be responsible.
Have a dealer or mechanic check for "trouble codes". It's probably the oxygen sensor(s).
A GM dealer's service center would know.
it means an emission trouble code is set in your engine computer,see your dealer asap.
A GM dealer's service center might be able to help.
Have dealer scan for trouble code, never jump another car with the engine running or the key in the on position, this has potential to be VERY expensive
The service engine soon, or check engine, light is reset with a scan tool after repairing the cause of the trouble codes.
go to your dealer and they will fix it for you.
It means the engine computer has detected a malfunction and set a trouble code.
Trouble code P0606 means:PCM processor fault
give the car in the service
Call a service center at any GM dealer. They will know.