Chevrolet 2007 Avalanche Owner's Manual page 121

To program the new additional key do the
following:
1. Verify that the new key has a
2. Insert the original, already programmed, key in
the ignition and start the engine. If the engine
will not start, see your dealer 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.
1
stamped on it.
5. The security light will turn off once the key
has been programmed.
6. Repeat Steps 1 through 5 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
may not be working properly and must be serviced
by your dealer.
If you lose or damage your PASS-Key
see your dealer or a locksmith who can service
®
PASS-Key III+ to have a new key made.
®
III+ system, however,
®
III+ key,
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