You're going to have to take it to the shop. They have to hack in to it. Unless you're trying to steal the radio, It's nearly impossible to get the code.
Have vehicle scanned to determine the problem and have codes cleared
There are dozens of codes. Be specific as to what code you are getting.
If the check engine light is flashing off and on when the engine is running that means an engine cylinder(s) misfire has been detected . You need to have the vehicle scanned for any trouble codes to help diagnose and then repair the problem
yes, and what codes are you asking about "check engine" or anti lock radio codes?
You need to hook the computer up to a scan tool to read the codes. That will tell you why the light is on.
call your local Chevy dealership they will help you with codes
There are pages and pages and items that can cause a check engine light. You need to have it checked for codes with a scan tool. After repair light can be shut off with scan tool.
check for engine codes- it could be that there is a bad o2 sensor or something.
See link below.
You can't, you must use a scanner.
Have vehicle scanned to determine the problem and have codes cleared
You have it checked for codes and diagnose the cause of the code.