Chevrolet 2007 Silverado, Owner'S Manual

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If the engine still does not start, and the key
appears to be undamaged, try another ignition
key. At this time, you may also want to check
the fuse, see Fuses and Circuit Breakers on
page 618. 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/retailer who can service the
PASS-Key
®
III+ to have a new key made. In
an emergency, contact Roadside Assistance.
It is possible for the PASS-Key
®
III+ decoder
to learn the transponder value of a new or
replacement key. Up to nine additional keys
may be programmed for the vehicle. The following
procedure is for programming additional keys only.
If all the currently programmed keys are lost or do
not operate, you must see your dealer/retailer or a
locksmith who can service PASS-Key
®
III+ to have
keys made and programmed to the system.
See your dealer/retailer or a locksmith who can
service PASS-Key
®
III+ to get a new key blank that
is cut exactly as the ignition key that operates
the system.
To program the new additional key:
1. Verify that the new key has a
1
stamped
on it.
2. Insert the original, already programmed, key
in the ignition and start the engine. If the
engine will not start, see your dealer/retailer
for service.
3. After the engine has started, turn the key to
OFF, and remove the key.
4. Insert the new key to be programmed and turn
it to the RUN position within five seconds of
removing the original key.
The security light will turn off once the key
has been programmed.
5. Repeat Steps 1 through 4 if additional keys
are to be programmed.
If you are driving and the security light comes on
and stays on, you may be able to restart your
engine. Your PASS-Key
®
III+ system, however,
may not be working properly and must be serviced
by your dealer/retailer.
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