Chevrolet Silverado 2015 Owner's Manual page 76

The lap-shoulder belt may lock if
you pull the belt across you very
quickly. If this happens, let the
belt go back slightly to unlock it.
Then pull the belt across you
more slowly.
If the shoulder portion of a
passenger belt is pulled out all
the way, the child restraint
locking feature may be engaged.
If this happens, let the belt go
back all the way and start again.
Engaging the child restraint
locking feature may affect the
passenger sensing system,
if equipped. See Passenger
Sensing System on page 3-31
for more information.
For the driver and front outboard
seating positions on light duty
vehicles and the center seating
position (if equipped) on crew
cab and double cab models,
if the webbing locks in the latch
plate before it reaches the
buckle, tilt the latch plate flat to
unlock.
Seats and Restraints
3. Push the latch plate into the
buckle until it clicks.
Pull up on the latch plate to
make sure it is secure. If the belt
is not long enough, see Safety
Belt Extender on page 3-20.
Position the release button on
the buckle so that the safety belt
could be quickly unbuckled if
necessary.
3-15