GMC Sierra Denali 2014 Owner's Manual page 64

3-14 Seats and Restraints
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. If the vehicle has rollover
capable roof-rail airbags, safety belt
pretensioners can help tighten the
safety belts in a rollover event.
Pretensioners work only once. If the
pretensioners activate in a crash,
they will need to be replaced, and
the vehicle s safety belt system will
probably need other new parts. See
Replacing Safety Belt System Parts
after a Crash on page 3-17.
Rear Safety Belt Comfort
Guides
Rear safety 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 shoulder belt away
from the neck and head.
This vehicle may have an adjustable
comfort guide. Additional comfort
guides are available through your
dealer.
To install the adjustable comfort
guide to the seatback and the
safety belt:
1. Locate the anchorage loop on
the rear outboard seatback, near
the top.
2. Attach the adjustable comfort
guide to the anchor loop by
threading the hook through
the loop.