[auroradream]

This is NOT in regard to the remote keyless entry.

In the 2001 Aurora, the primary door/ignition/trunk key is called a "transponder key". The transponder key is marked with PK3 on the metal shank of the key just below the finger grip.

The transponder key contains a programmed circuit. When the key is inserted in the ignition, a pickup near the ignition switch detects the transponder and enables some functions. This info is given in the owner's manual.

The 2001 was also delivered with a valet key. The valet key opens only the door and works in the ignition. The plastic grip on the key is gray. I didn't receive a valet key with my used car, but that's another matter.

I want to have a duplicate made of the transponder key. I spoke to a locksmith, and he told me the PK3 key is the easiest of all transponder keys to program - "it takes about 10 seconds at the car...".

I can buy blanks for about 1/2 of what the locksmith charges to cut and program one key. I also have a key cutter. I interpreted what the locksmith said to mean that there was a means to program duplicates in the car somehow using the original key as a data source.

Does anyone have any knowledge about how this is done?
Thanks.