Doors; Liftgate (Manual) - GMC 2012 Yukon/Yukon XL Owner's Manual

Open the rear doors to access the
security locks on the inside edge of
each door.
To set the locks, insert a key into
the slot and turn it to the horizontal
position. The door can only be
opened from the outside with the
door unlocked. To return the door to
normal operation, turn the slot to the
vertical position.

Doors

Liftgate (Manual)

WARNING
It can be dangerous to drive with
the liftglass or liftgate open
because carbon monoxide (CO)
gas can come into your vehicle.
You cannot see or smell CO.
It can cause unconsciousness
and even death.
If you must drive with the liftglass
or liftgate open, or if electrical
wiring or other cable connections
must pass through the seal
between the body and the
liftglass or liftgate:
Make sure all other windows
are shut.
Turn the fan on your heating
or cooling system to its
highest speed with the
Keys, Doors, and Windows
WARNING (Continued)
recirculation mode off. That
will force outside air into your
vehicle. See Climate Control
Systems on page 8 1 or Dual
Automatic Climate Control
System on page 8 4.
If you have air outlets on or
under the instrument panel,
open them all the way.
If your vehicle has a power
liftgate, disable the power
liftgate function.
See Engine Exhaust on
page 9 30.
Press
Entry (RKE) transmitter or use the
power door lock switches to unlock
the liftgate. See Remote Keyless
Entry (RKE) System Operation on
page 2 3.
(Continued)
2-9
on the Remote Keyless