2009 Chevrolet Suburban Owner's Manual - Page 54

Shoulder Belt Height Adjuster The vehicle has a shoulder belt height adjuster for the driver and right front passenger positions. Adjust the height so that the shoulder portion of the belt is centered on the shoulder. The belt should be away from the face and neck, but not falling off the shoulder. Improper shoulder belt height adjustment could reduce the effectiveness of the safety belt in a crash. Squeeze the buttons (A) on the sides of the height adjuster and move the height adjuster to the desired position. Safety Belt Pretensioners This vehicle has safety belt pretensioners for front outboard occupants. Although the safety belt pretensioners cannot be seen, they are part of the safety belt assembly. They can help tighten the safety belts during the early stages of a moderate to severe frontal, near frontal, or rear crash if the threshold conditions for pretensioner activation are met. And, if the vehicle has side impact airbags, safety belt pretensioners can help tighten the safety belts in a side crash or a rollover event. Pretensioners work only once. If the pretensioners activate in a crash, they will need to be replaced, and probably other new parts for the vehicle's safety belt system. See Replacing Restraint System Parts After a Crash on page 1-99. Rear Safety Belt Comfort Guides Rear shoulder belt comfort guides may provide added safety belt comfort for older children who have outgrown booster seats and for some adults. When installed on a shoulder belt, the comfort guide positions the belt away from the neck and head. The adjuster can be moved up just by pushing up on the shoulder belt guide. After the adjuster is set to the desired position, try to move it down without squeezing the buttons to make sure it has locked into position. 1-48