Cadillac 2003 Seville Owner's Manual page 82

If the engine does not sta.rt, a.nd
the
key appears to be
undamaged, try another ignition key. At this time,
you may ais0 want to check the fuse. See Fuses and
Circuit Breakers on page 5-93. If the engine still
does not start with the other key, your vehicle needs
service. If your vehicle does start, the first key may be
faulty. See your dealer who can service the
PASS-Key@lll to have a new key made.
It is possible for the PASS-Key@lll decoder to learn the
transponder value of a new or replacement key. Up to 10
additional keys may be programmed for the vehicle. This
procedure is for learning additional keys only.
Canadian Owners: If you lose or damage your keys,
only a GM dealer can service PASS-Key@lll to have new
keys made. To program additional keys you will
require two current driver's keys (black in color). You
must add a step to the following procedure. After Step 2,
repeat Steps 1 and 2 with the second current driver's
key. Then continue with Step 3.
To program the new key do the following:
1. Verify that the new key has PK3 stamped on it.
3. Affer the engine
has
sfaded, turn the key to OFF,
and remove the key.
4. Insert the key to be programmed and turn it to ON
within 10 seconds of removing the previous key.
5. The SECURITY light will turn off once the key has
been programmed. it may not be apparent that the
SECURITY light went on due to how quickly the
key is programmed.
6. Repeat the Steps 1 through 4 if additional keys are
to be programmed.
If you are ever driving and the SECURITY light comes
on and stays on, you will be able to restart your
engine if you turn it off. Your PASS- Key@lll system,
however, is not working properly and must be serviced
by your dealer. Your vehicle is not protected by the
PASS-Key@lll system at this time.
If you lose or damage a PASS-Key@ Ill key, your dealer
to have a new key made.
In an emergency, contact Cadillac Roadside Assistance.
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2. Insert the current driver's key in the ignition
and start the engine. If the engine will not start see
your dealer for service.
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