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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1259 (Theft Deterrent System) >> Description and Operation >> Vehicle Theft Deterrent (VTD) Description and Operation >> Ignition Key (Transponder) >> Notes

Ignition Key (Transponder): Notes

WARNING: This page is about a different car, the 2003 Pontiac Grand Prix. However, it is still accessible from the selected car via links, so may be relevant.

The ignition key for VTD equipped vehicles is a typical looking ignition key with a transponder located in the plastic end of the key. The transponder value is fixed and unable to be changed. The VTD system uses the ignition key transponder value to determine if a valid ignition key is being used to start the vehicle.

There are approximately three trillion possible transponder values. There are no visible electrical contacts. The keys may be identified by the letters "PK3" stamped into the steel shank of the key.

The VTD systems use the following types of ignition keys:

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