Their is no here else you can get the codes from so sorry i cant give you any easy solution to this problem the only way is to take your car to the main dealers you might even need the log book or owners book with you.
You need to take the car with you as they wont give you the code over the phone in case you have stolen the stereo so taking the car to the main dealers is the only way your going to get this code and get your audio system working again. Hi, this is a very common problem that people have when they have had work done on their vehicles and had the battery disconnected, the problem is their only one way of solving your problem that is by going to the main dealers their is no other way of doing this as they do this so as people dont steal the radios and then unlock them themselves. SOURCE: I changed my car battery and the car audio system Unlikely that your radio has this anti theft feature. GM vehicles are equipped with a PROM so it is highly Radio! The good news is, only a very few of the high end If the radio has a PROM then the chip must be changedĪnd that seems to be factory only, in other words a new That works out to $240.00 per hour, but still much ( none of the dealers I contacted would do it for free). I checked around and the going rate is about $60.00
It canīe done (if you know how) in less then 15 minutes. Into the computer and resets the VIN in the radio.
The Radio does not need to be removed (for the serial If the radio has an EPROM the dealer will use something calledĪ TECH 2 DEVICE to change the VIN stored in the Radio. Will not work until you make a trip to the dealer. You are finished, there is no easy way around it. Match, the radio works, if not the radio displays LOC and When the vehicle is started the computerĬompares the number in the radio with the VIN. With Theftlock II the radio is married to the vehicle by way The code is burned in and holds even when the power is lost. Not alter the prom once it is programmed). Read only memory) or a PROM (the difference is you can Theftlock II - Uses an EPROM (erasable/programmable In less then a minute with a little practice. This may sound a bit complicated at first but you can do it Use the HR and MIN buttons to enter the code This code isĪvailable all over the place for less then $10.00. With this number you can get the unlock code. Then hold down the AM/FM button and the last 3 digits will (sometimes 1-4) and the first 3 digits will appear in the display. To get that, just turn on the ignition and hold down the 2-3 keys
If you do not have the code, you can get it by phone, email, etc.īut you will need the 6 digit Radio ID number. If the power is lost (dead batteryĮtc.) the code is gone and must be re-entered for the radio to
Theftlock I - Uses a volatile code that is input through the key The Theftlock I is found in pre 2000 vehicles and Theftlock II is There are 2 types of GM Theftlock, Theftlock I and Theftlock II.