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The computer is not happy with the motor change. There is probably a security code system that needs to be reset. It may be as simple as the radio security code which dealer may have by vin number. But more likely the internal computer needs a reset, most likely also by dealer.
The ignition key would have lock and unlock buttons on it, for remote luck and unlock of the electric door locks. If that is not enough information plug your vin number in on
GM website and get a build list.
If it is a STOCK Remote you Must bite the Bullet and take it to Dealer they have the Code that will reset ir, your VIN gives them this Info... HOWEVER you May be Able to Manualy Lock the car and then Use the Door key to unlock it and this will reset it on Many Make /Modles
you need to take it to your dealer there is no way for you to unlock it because the
Theft Lock is activated when the VIN as received over the data communication circuit and the VIN as stored in the module memory do not match. This also occurs when no VIN is received over the data communication circuit.
they can try and program it and if it will not program then the radio will have to be replaced
hope this helps
There are 2 types of GM Theftlock, Theftlock I and Theftlock II. The Theftlock I is found in pre 2000 vehicles, and Theftlock II is in the later models.
Theftlock I - Uses a volatile user settable code that is input through the key pad on the front of the Radio. If the power is lost (dead battery etc.) the code is gone and must be re-entered for the radio to work. But with the correct procedure the owner can unlock it.
Theftlock II - Uses an EPROM (erasable/programmable read only memory) or a PROM (the difference is you can not alter the prom once it is programmed).
In either case the code is burned in and holds even when the power is lost. With Theftlock II the radio is married to the vehicle by way of the VIN. When the vehicle is started the computer compares the number in the radio with the VIN in the body control module. If they match, the radio works, if not the radio displays LOC and you are finished, there is no easy way around it. The radio will not work until you make a trip to the dealer.
The dealer will use a TECH 2 scanner to change the VIN stored in the radio. The radio does not need to be removed (for the serial number or any other nonsense). The technician just plugs into the computer and resets the VIN in the radio. Thank you for using Fixya and you may want to try pulling the fuse to your radio for 2 min and then reinstalling it. This may reset your radio and have the ECM recognize the radio matching VIN number to the Trailbalzer.
Hello the code will be the last 4 numbers of the car's VIN (Vehicle
Identification Number) which would be found in your registration papers
or on one of the plates riveted to the body in the engine bay at the
And if that doesn't work take it to Toyota and they will reset it to
default for $40..
Remember you can only enter the code 10 times max.
The only way to unlock the radio is by using a scan tool. The scan tool sends the appropriate diagnostic message (relearn VIN) to reset the radio. Using a scan tool, select the radio VIN relearn procedure from the module replacement screen in Vehicle Control Systems......find some one with a Tech 2