
Black plate (1,1)
GMC Sierra Owner Manual - 2012
Seats and Restraints
3-1
Seats and
Restraints
Head Restraints
Head Restraints . . . . . . . . . . . . . . . 3-2
Front Seats
Seat Adjustment . . . . . . . . . . . . . . 3-3
Center Seat . . . . . . . . . . . . . . . . . . . 3-4
Power Seat Adjustment . . . . . . . 3-4
Lumbar Adjustment . . . . . . . . . . . 3-4
Reclining Seatbacks . . . . . . . . . . 3-5
Memory Seats . . . . . . . . . . . . . . . . 3-7
Heated and Ventilated Front
Seats . . . . . . . . . . . . . . . . . . . . . . . . 3-9
Rear Seats
Rear Seats (Extended Cab
Full Bench) . . . . . . . . . . . . . . . . . 3-10
Rear Seats (All Split Bench
and Hybrid Full Bench) . . . . . 3-11
Safety Belts
Safety Belts . . . . . . . . . . . . . . . . . . 3-12
How to Wear Safety Belts
Properly . . . . . . . . . . . . . . . . . . . . 3-13
Lap-Shoulder Belt . . . . . . . . . . . 3-15
Safety Belt Use During
Pregnancy . . . . . . . . . . . . . . . . . . 3-20
Lap Belt (Crew and
Extended Cab) . . . . . . . . . . . . . 3-20
Safety Belt Extender . . . . . . . . . 3-21
Safety System Check . . . . . . . . 3-21
Safety Belt Care . . . . . . . . . . . . . 3-22
Replacing Safety Belt System
Parts after a Crash . . . . . . . . . 3-22
Airbag System
Airbag System . . . . . . . . . . . . . . . 3-23
Where Are the Airbags? . . . . . 3-25
When Should an Airbag
Inflate? . . . . . . . . . . . . . . . . . . . . . 3-27
What Makes an Airbag
Inflate? . . . . . . . . . . . . . . . . . . . . . 3-29
How Does an Airbag
Restrain? . . . . . . . . . . . . . . . . . . . 3-29
What Will You See after an
Airbag Inflates? . . . . . . . . . . . . 3-30
Airbag On-Off Switch . . . . . . . . 3-32
Passenger Sensing
System . . . . . . . . . . . . . . . . . . . . . 3-35
Servicing the Airbag-Equipped
Vehicle . . . . . . . . . . . . . . . . . . . . . 3-40
Adding Equipment to the
Airbag-Equipped Vehicle . . . 3-40
Airbag System Check . . . . . . . . 3-42
Replacing Airbag System
Parts after a Crash . . . . . . . . . 3-42
Child Restraints
Older Children . . . . . . . . . . . . . . . 3-43
Infants and Young
Children . . . . . . . . . . . . . . . . . . . . 3-45
Child Restraint Systems . . . . . 3-47
Where to Put the Restraint . . . 3-49
Lower Anchors and Tethers
for Children (LATCH
System) . . . . . . . . . . . . . . . . . . . . 3-51
Replacing LATCH System
Parts After a Crash . . . . . . . . . 3-59
Securing Child Restraints
(Rear Seat Position) . . . . . . . . 3-60
Securing Child Restraints
(Center Front Seat
Position) . . . . . . . . . . . . . . . . . . . 3-62
Securing Child Restraints
(Right Front Seat
Position) . . . . . . . . . . . . . . . . . . . 3-62