Hello hay88. Opel Frontera and I locked my radio DELCO ELKTRONIK to him and I knew the code could you help me? Here are the details that we may offer: 4660103 DELCO GM 90493281 NO. 90,566,821
Unfortunately DELCO codes are not obtainable for free (using the Serial Number) from anywhere on the Internet as access is required to the original factory database which is only available to the Main Dealer or one the larger professional Decode Services.
The alternative is for your radio to be taken/posted to a Decode Service or your local Car Radio / Audio Shop who will plug it into a laptop and electronically read/recode the memory chip (EEPROM)