Buick RIVIERA 1993 Manual page 64

I
There are several ways to lock and unlock your vehicle:
.
From the inside: To lock the door, move the lock control
on the door down.
To unlock the door, move the lock control on the door
UP.
i
From the outside: Use your door key.
If your vehicle has a theft deterrent system and it is
'
armed, unlock the doors only with the key or Remote
Keyless Entry System (if you h-ave
one).
This will avoid
setting off the alarm.
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