Door Locks - GMC 1999 Sierra 1500 Pickup Owner's Manual

Features & Controls
Door Locks
Unlocked doors can be dangerous.
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When a door is locked, th Inside handle
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13+AFyOutsi' s can easily e-L-!r thro
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an
unlocKed aoor wnen
you slow
e&%or stop your vehicle.
ssengers-especially children-can easily open the
doors
and fa1
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This may not be
so obvious: You increase the chance of being
thrown out of the vehicle in a crash if the doors aren't locked. Wear
safety belts properly, lock your doors, and vou will be far better off
whenever vou drive vour vehicle.
There are several ways to lock and unlock your vehicle:
2-6