GMC Yukon XL 2013 Owner's Manual page 36

2-2 Keys, Doors, and Windows
Keys and Locks
Keys
WARNING
Leaving children in a vehicle with
the ignition key is dangerous and
children or others could be
seriously injured or killed. They
could operate the power windows
or other controls or make the
vehicle move. The windows will
function with the keys in the
ignition, and children or others
could be caught in the path of a
closing window. Do not leave
children in a vehicle with the
ignition key.
The key is used for the ignition and
all door locks.
The key has a bar-coded key tag
that the dealer or qualified locksmith
can use to make new keys. Store
this information in a safe place, not
in the vehicle.
See your dealer if a replacement
key or additional key is needed.
If the vehicle has an ignition and it
becomes difficult to turn the key,
inspect the key blade for debris.
Periodically clean with a brush
or pick.
With an active OnStar subscription,
an OnStar Advisor may remotely
unlock the vehicle. See OnStar
Overview on page 14 1.
Remote Keyless Entry
(RKE) System
See Radio Frequency Statement on
page 13 21 for information
regarding Part 15 of the Federal
Communications Commission (FCC)
rules and Industry Canada
Standards RSS-GEN/210/220/310.
If there is a decrease in the RKE
operating range:
Check the distance. The
transmitter may be too far from
the vehicle.
Check the location. Other
vehicles or objects may be
blocking the signal.
Check the transmitter's battery.
See Battery Replacement later
in this section.