YOU ARE GOING TO HAVE TO PULL THE RADIO AND TAKE CAR AND IT TO DEALER THEN THEY WILL LOOK IT UP- MAYBE A CHARGE - OR IF YOU KNOW SOMEONE AT A DEALER THEY COULD DO IT OVER THE PHONE -
CHECK GLOVE BOX FOR A STICKER - CHECK OWNERS MANUAL FOR A STICKER - PULL RADIO LOOK IT OVER FOR A STICKER - HAVE SEEN THEM all these places