Ignition Lock Cylinder
WARNING: This page is about a different car, the 2003 Pontiac Montana, 2003 Oldsmobile Silhouette, and 2003 Chevrolet Venture. However, it is still accessible from the selected car via links, so may be relevant.
The ignition lock cylinder performs all of the functions of a lock cylinder on a non theft deterrent equipped vehicle. The ignition lock cylinder for vehicle with theft deterrent may be located on the steering column or on the instrument panel. In either location the exciter coils surround the ignition lock cylinder such that they are very close to the head of the key which contains the transponder pellet.
If an ignition lock cylinder is replaced, new transponder keys must be cut to match the mechanical coding of the new lock cylinder. The new keys be learned by the theft deterrent control module (VTD).
When replacing an ignition lock cylinder, refer to PROGRAMMING THEFT DETERRENT SYSTEM COMPONENTS .