GMC Sierra 2010 Owner's Manual page 107

6. To tighten the belt, push down on the child
restraint, pull the shoulder portion of the belt to
tighten the lap portion of the belt and feed the
shoulder belt back into the retractor. When
installing a forward-facing child restraint, it may be
helpful to use your knee to push down on the child
restraint as you tighten the belt.
7. If the vehicle does not have a rear seat and the
child restraint has a top tether, follow the child
restraint manufacturer's instructions regarding the
use of the top tether. See Lower Anchors and
Tethers for Children (LATCH) on page 2 50 for
more information.
8. Push and pull the child restraint in different
directions to be sure it is secure.
If the vehicle is equipped with a passenger sensing
system, and when the passenger sensing system has
turned off the right front passenger frontal airbag, the off
indicator in the passenger airbag status indicator should
light and stay lit when you start the vehicle.
If a child restraint has been installed and the on
indicator is lit, see If the On Indicator is Lit for a
Child Restraint under Passenger Sensing System on
page 2 85 for more information.
To remove the child restraint, unbuckle the vehicle
safety belt and let it return to the stowed position.
If the top tether is attached to a top tether anchor,
disconnect it.
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