GMC 2003 Yukon XL, Owner'S Manual

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Resynchronization
Resynchronization may be necessary due to the
security method used by this system. The transmitter
does not send the same signal twice to the receiver. The
receiver will not respond to a signal that has been
sent previously. This prevents anyone from recording
and playing back the signal from the transmitter.
To resynchronize your transmitter, stand close to your
vehicle and press and hold the LOCK and UNLOCK
buttons on the transmitter at the same time for
15 seconds. The door locks should cycle to confirm
synchronization. If the locks do not cycle, see your
dealer for service.
Doors and Locks
Door Locks
{
CAUTION:
Unlocked doors can be dangerous.
•
Passengers — especially children — can
easily open the doors and fall out of a
moving vehicle. When a door is locked,
CAUTION: (Continued)
CAUTION: (Continued)
the handle will not open it. You increase
the chance of being thrown out of the
vehicle in a crash if the doors are not
locked. So, wear safety belts properly and
lock the doors whenever you drive.
•
Young children who get into unlocked
vehicles may be unable to get out. A child
can be overcome by extreme heat and can
suffer permanent injuries or even death
from heat stroke. Always lock your vehicle
whenever you leave it.
•
Outsiders can easily enter through an
unlocked door when you slow down or
stop your vehicle. Locking your doors can
help prevent this from happening.
There are several ways to lock and unlock your vehicle.
You can use the keyless entry system (if equipped).
You can also use your key.
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