Child Restraints; Safety Belt Extender; Older Children - GMC 2004 Yokon Denali Owner's Manual

Safety Belt Extender

If the vehicle's safety belt will fasten around you, you
should use it.
But if a safety belt isn't long enough to fasten, your dealer
will order you an extender. It's free. When you go in to
order it, take the heaviest coat you will wear, so the
extender will be long enough for you. The extender will be
just for you, and just for the seat in your vehicle that you
choose. Don't let someone else use it, and use it only for
the seat it is made to fit. To wear it, just attach it to the
regular safety belt.

Child Restraints

Older Children

Older children who have outgrown booster seats should
wear the vehicle's safety belts.
If you have the choice, a child should sit in a seat that
has a lap-shoulder belt to get the additional restraint
a shoulder belt can provide.
1-49