2007 GMC Yukon Owner's Manual - Page 45

4. Push the latch plate into the buckle until it clicks. 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 60. 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. 5. Move the shoulder belt height adjuster to the height that is right for you. Improper shoulder belt height adjustment could reduce the effectiveness of the safety belt in a crash. See Shoulder Belt Height Adjustment on page 51. 6. To make the lap part tight, pull up on the shoulder belt. 45