GMC 1994 Yukon Owner's Manual page 46

Securing a Child Restraint in a Rear Outside Position
You'll be using the lap-shoulder belt. See the earlier section about the top
strap if the child restraint has one.
1. Put the restraint on the seat. Follow the instructions for the child
restraint.
2. Secure the child in the child restraint as the instructions say.
3. Pull out the vehicle's safety belt. Make the belt as long as possible by
tilting the latch plate and pulling it along the belt.
4. Run the lap and
shoulder portions
through or around
the restraint. The
child restraint
instructions will
show you how. If
the shoulder belt
goes in front of
the child's face or
neck, put it
behind the child
restraint.
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