GMC 2011 Sierra - Manual (Page 91)

Black plate (23,1) GMC Sierra Owner Manual - 2011
Seats and Restraints 3-23
Shoulder Belt Height Adjuster
The vehicle has a shoulder belt
height adjuster for the driver and
right front passenger.
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 3‑15.
Regular and Crew Cab
To move the adjuster down for the
regular and crew cabs, squeeze
the buttons (A) on the sides of the
height adjuster and move the height
adjuster to the desired position.
Extended Cab
On the extended cab, push down
on the release button (A) and move
the height adjuster to the desired
position.
You can move the adjuster up just
by pushing up on the shoulder belt
guide.
After you move the adjuster to
where you want it, try to move it
down, without squeezing the buttons
for the regular and crew cabs,
or without pushing the release
button for extended cabs, to make
sure it has locked into position.