Lap Belt - GMC 2004 Sierra 1500 Pickup Owner's Manual

Lap Belt

When you sit in a center rear seat position of an extended
cab or in the center front seat position of either a crew
cab or an extended cab or regular cab, you have a
lap belt.
Your lap safety belt has no retractor. To make the belt
longer, tilt the latch plate and pull it along the belt.
1-26
To make the belt shorter, pull its free end as shown
until the belt is snug.
Buckle, position and release it the same way as the lap
part of a lap-shoulder belt. If the belt isn't long
enough, see Safety Belt Extender on page 1-32 .
Make sure the release button on the buckle is positioned
so you would be able to unbuckle the safety belt
quickly if you ever had to.