Chevrolet 2005 Aveo Owner's Manual page 30

Rear Seat Outside Positions
Lap-Shoulder Belt
The positions next to the windows have lap-shoulder
belts. Here is how to wear a lap-shoulder belt properly.
1. Pick up the latch plate and pull the belt across you.
Do not let it get twisted.
The shoulder belt may lock if you pull the belt
across you very quickly. If this happens, let the
belt go back slightly to unlock it. Then pull the
belt across you more slowly.
1-24
2. Push the latch plate into the buckle until it clicks.
Be sure you are using the correct buckle and that
the latch plate clicks when inserted into the buckle.
If the belt stops before it reaches the buckle, tilt the
latch plate and keep pulling until you can buckle it.
Pull up on the latch plate to make sure it is secure.
If the belt is not long enough, see Safety Belt
Extender on page 1-27.
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.