GMC 2007 Acadia Owner's Manual page 122

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 do the
following:
1. Verify that the new key has a
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 ON position within five seconds
of removing the original key.
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.
122
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/retailer.
If you lose or damage your PASS-Key
see your dealer/retailer or a locksmith who can
1
stamped
service PASS-Key
The SERVICE THEFT DETERRENT SYSTEM
message displays on the Driver Information Center
(DIC) when there is a problem with the
theft-deterrent system. See DIC Warnings and
Messages on page 244 for additional information.
Do not leave the key or device that disarms or
deactivates the theft deterrent system in the
vehicle.
®
III+ system, however,
®
III+ key,
®
III+ to have a new key made.