GMC 1999 Jimmy Owner's Manual page 69

Power Door Locks (If Equipped)
If your vehicle has power door locks, the switch is
located on the armrest. Remove the ignition key and
press LOCK to lock all the doors at once.
To unlock the doors, press the raised area next to the
key symbol.
-
On four door models, the switch on each rear door
works only that door's lock.
Rear Door Security Lock (If Equipped)
Lockout Prevention
To protect you from locking your key in the vehicle, this
feature stops the power door locks from locking when
the keys are in the ignition and a door is open.
If the power lock switch is pressed when a door is open
and the key is in the ignition, all the doors will lock and
the driver's door will unlock.
yellowblue
With this feature, you can
lock the rear doors so they
can't be opened from the
inside by passengers.
Move the lever up to lock
the doors and down to
release the door locks.
2-5