2006 Cadillac DTS Owner's Manual - Page 32

2. Push the latch plate into the buckle until it clicks. The latch plates for the safety belts in each rear seating position vary in size. If the center rear or the left rear latch plate is inserted into the incorrect buckle, the plate will not latch properly. Be sure you are using the correct buckle and that the latch plate clicks when inserted into the buckle. When the shoulder belt is pulled out all the way, it will lock. If it does, let it go back and start again. 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 1-31. 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. 3. To make the lap part tight, pull down on the buckle end of the belt as you pull up on the shoulder part. 1-26