Power Door Locks; Rear Door Security Lock - GMC 2000 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

Move the lever up to lock the doors and down to release
the door locks.
Lockout Prevention
This feature stops the power door locks from locking
when the key is in the ignition and a door is open to
protect you from locking your key in the vehicle.
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.
With this feature, you can
lock the rear doors so they
can't be opened from the
inside by passengers.
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