Quote:
Originally Posted by bheston
richtazz - Thanks for the reply. The way I understand it (which I coule be off base but this is the way I understand it) is the 4 digit code only applies to model years older than 2000. After that they have a standard feature in them that the VIN is electronically programmed into the radio, and when that radio is fired in a different vehicle it is communicating with the computer so if the VIN doesn't match it gets locked, and you have to re-program the new VIN number into that unit. Mine is a 2002 so I believe it always has this theft protection active.
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Here is a quote from the FSM for a 2000 Buick LeSabre. So, the info probably applies to you.
DTC B1780 Theft Lock Enabled
Circuit Description
Each time the ignition cycles from OFF to ON, the radio receives VIN data over the class 2 communication circuit. If the VIN data stored in the radio memory matches the VIN data received over the class 2 communication circuit, the radio operates normally.
Conditions for Running the DTC
The ignition switch is turned from OFF to ON.
Conditions for Setting the DTC- The ignition switch is turned from OFF to ON.
- Installing a radio from another vehicle or installing a new Dash Integration Module (DIM) and not entering the correct VIN information with the scan tool.
Action Taken When the DTC Sets
The radio does not function. The radio also display LOC.
Conditions for Clearing the DTC- When installing a radio from another vehicle of the same platform, clear the VIN data using the scan tool.
- Installing a new DIM, properly setup the DIM with the correct VIN for that vehicle.
The DTC status will turn to history when the above criteria is met. The scan tool can now clear the history DTC or it will clear automatically after 100 consecutive fault free ignition cycles.
The radio in my 2000 LeSabre just crapped out and I just ordered one that came out of a 2000 Buick Regal. I'm sure that it will display LOC and it requires a Tech2 scanner or equilvalent to clear out the old VIN. The radio then acts as a plug and play device which then will read the new VIN from the DIM and stores the VIN in the radio memory. I have a Tech2 scanner, so it shouldn't be any problem.