Chevrolet HHR 2011 Owner's Manual page 62

Shoulder Belt Height Adjuster
The vehicle has a shoulder belt height adjuster for the
driver and right front passenger seating positions.
Adjust the height so the shoulder portion of the belt is
on the shoulder and not falling off of it. The belt should
be close to, but not contacting, the neck. Improper
shoulder belt height adjustment could reduce the
effectiveness of the safety belt in a crash. See How to
Wear Safety Belts Properly on page 2 19.
After the height adjuster is set to the desired position,
try to move it down without pressing the release button
to make sure it has locked into position.
2-30
Push down on the release
button (A) and move the
height adjuster to the
desired position. The
adjuster can be moved up
by pushing the release
button up on the shoulder
belt guide.
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 or near frontal 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 and rear
events.
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 2 74