GMC 2002 Sierra - Manual (Page 60)

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Right Front Passenger Position Top Strap Anchor
(All Models)
You’ll find the top strap anchor for the right front
passenger seat behind the seat, near the floor.
If your vehicle is a regular cab model, there is also a top
strap anchor for the right front passenger position
located on the back panel of your vehicle, behind the
right front passenger seat. In order to get to the anchor,
you’ll have to remove the trim plug covering it.
Once you have the top strap anchored, you’ll be ready to
secure the child restraint itself. Tighten the top strap
when and as the child restraint manufacturer’s
instructions say.