Safety Belts: They're For Everyone - GMC SIERRA 2002 Manual

To fold the rear seat, do the following:
2. After folding the seat cushion fully forward, pull the
seatback forward and fold the seatback down until it
is flat. If the seatback cannot fold flat because it
interferes with the cushion, try moving the front seat
forward and/or bringing the front seat more upright.
The lever at the base of the seat must be turned
rearward to release the seatback.
To return the seat to the passenger position do
the following:
1. Lift the seatback up and push it rearward all the way.
2. Lower the seat cushion until it latches into position.
1-10
1. Pull up on the strap loop
at the rear of the seat
cushion. Then, pull the
seat cushion up and fold
it forward.
3. Pull forward on the seatback and up on the seat
cushion to make sure the seat is securely in place.
Check to see that the buckles on the driver's side
seatback are accessible to the outboard and center
occupant and are not under the seat cushions.

Safety Belts: They're for Everyone

This part of the manual tells you how to use safety belts
properly. It also tells you some things you should not do
with safety belts.
And it explains the air bag system.
CAUTION:
Don't let anyone ride where he or she can't wear
a safety belt properly. If you are in a crash and
you're not wearing a safety belt, your injuries
can be much worse. You can hit things inside the
vehicle or be ejected from it. You can be seriously
injured or killed. In the same crash, you might
not be if you are buckled up. Always fasten your
safety belt, and check that your passengers' belts
are fastened properly too.