Chevrolet 2003 Silverado 1500 Pickup Owner's Manual page 14

Head Restraints
The rear seat head restraints in your vehicle may be
adjustable. They work the same as the front seat head
restraints, except they do not tilt forward and rearward.
Adjust your head restraint so that the top of the restraint
is closest to the top of your head. This position
reduces the chance of a neck injury in a crash.
To raise the head restraint pull up on the head restraint.
On some models the head restraints tilt forward and
rearward also.
Seatback Latches
If the seatback isn't locked, it could move
forward in a sudden stop or crash. That could
cause injury to the person sitting there. Always
press rearward on the seatback to be sure it is
locked.
The seatbacks fold forward to let you access the rear of
the cab.
To fold a front seatback forward, lift the lever at the
base of the seat to release the seatback.
The lever is located on the outboard side of the seat
cushion.
To return the seatback to the upright position, push the
seatback rearward until it latches. After returning the
seatback to its upright position, push and pull on
the seatback to make sure it is locked.
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