Power Door Locks - GMC 1999 Suburban Owner's Manual

2-4
From the inside, to lock the
door, slide the lever on your
door down.
To unlock the door, slide the
lever up.

Power Door Locks

-
On four door models, the manual switch on each rear
door works only that door's lock. It won't lock (or
--
unlock) all of the doors
Press the side of the power
door lock switch marked
LOCK on either front door
to lock all the doors at once.
Press the ribbed side of the
switch to unlock all the
doors at once.
that's a safety feature.
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