GMC Chevrolet Tahoe 2003 Manual page 45

Center Passenger Position
If your vehicle has front and rear bench seats, someone
can sit in the center positions.
When you sit in the center seating position in the
second row you have a lap-shoulder belt which is similar
to the rear outside seating positions. To learn how to
wear this belt see "Lap-Shoulder Belt" under Rear Seat
Passengers on page 1-40 .
Lap Belt
When you sit in a center seating position other than in
the second row you have a lap belt.
A lap safety belt does not have a retractor. To make the
belt longer, tilt the latch plate and pull it along the belt.
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