What to do if chevrolet optra magnum music system off becouse of wrong code

There should be a radio code with the manuals in the glove box.

You need to go to a dealer, take the VIN code the number from the radio and most important of all proof of ownership, they have a number to call to get the code. I hope this helps. Take care.

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P1403 Exhaust Gas Recirculation System Valve 1

Go to www.radio-code.com

low on freeon

P0700 - Transmission Control System Malfunction
This code is normally accompanied by another more specific code

Optra 5 2004 ls code 3241 worked for me . thankyou verymuch u guys saved me my time and money