Power Door Locks - GMC 1999 Envoy Owner's Manual

Power Door Locks

The power door lock 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.
The switch on each rear door works only that
door's lock.
Rear Door Security Lock
Lockout Prevention
To protect you from locking your key in the vehicle, this
feature stops the power door locks from locking when
the key is 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
then the driver's door will unlock.
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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.
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