2017 GMC SIERRA seat adjustment

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-9955992) - 2017 - crc - 4/18/17
58 Seats and Restraints
Power Seat Adjustment
To adjust a power seat, if equipped:
.Move the seat forward or
rearward by sliding the control
forward or rearward.
. If equipped, raise or lower the
front part of the seat cushion by
moving the front of the control
up or down.
. If equipped, raise or lower the
seat by moving the rear of the
control up or down.
To adjust the seatback, see
Reclining Seatbacks 059. To adjust the lumbar support, see
Lumbar Adjustment
058.
Some vehicles are equipped with a
feature that activates a vibrating
pulse alert in the driver seat to help
the driver avoid crashes. See Driver
Assistance Systems 0305.
Lumbar Adjustment
Manual Lumbar
If equipped, move the lever up or
down repeatedly to increase or
decrease lumbar support.
Power Lumbar
To adjust the power lumbar support,
if equipped:
.
Press and hold the control
forward to increase or rearward
to decrease upper and lower
lumbar support at the same time.
. If equipped, press and hold the
control up to increase upper
lumbar support and decrease
lower lumbar support.
Press and hold the control down
to increase lower lumbar support
and decrease upper lumbar
support.

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-9955992) - 2017 - crc - 4/18/17
Seats and Restraints 69
5. To make the lap part tight, pullup on the shoulder belt.
To unlatch the belt, push the button
on the buckle. The belt should
return to its stowed position.
Always stow the safety belt slowly.
If the safety belt webbing returns
quickly to the stowed position, the
retractor may lock and cannot be
pulled out. If this happens, pull the
safety belt straight out firmly to
unlock the webbing, and then
release it. If the webbing is still
locked in the retractor, see your
dealer.
Before a door is closed, be sure the
safety belt is out of the way. If a
door is slammed against a safety
belt, damage can occur to both the
safety belt and the vehicle.
Shoulder Belt Height Adjuster
The vehicle has a shoulder belt
height adjuster for the driver and
front outboard 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 066.
Push down on the release button to
move the height adjuster to the
desired position.
Move the adjuster up by pushing up
on the shoulder belt guide.
After the adjuster is set to the
desired position, try to move it down
without pushing the release button
to make sure it has locked into
position.

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-9955992) - 2017 - crc - 4/18/17
Driving and Operating 273
Starting and
Operating
New Vehicle Break-In
Caution
The vehicle does not need an
elaborate break-in. But it will
perform better in the long run if
you follow these guidelines:. Keep the vehicle speed at
88 km/h (55 mph) or less for
the first 805 km (500 mi).
. Do not drive at any one
constant speed, fast or slow,
for the first 805 km (500 mi).
Do not make full-throttle
starts. Avoid downshifting to
brake or slow the vehicle.
. Avoid making hard stops for
the first 322 km (200 mi) or
so. During this time the new
brake linings are not yet
broken in. Hard stops with
new linings can mean
(Continued)
Caution (Continued)
premature wear and earlier
replacement. Follow this
breaking-in guideline every
time you get new brake
linings.
. Do not tow a trailer during
break-in. See Trailer Towing
0 323 for the trailer towing
capabilities of the vehicle
and more information.
Following break-in, engine speed
and load can be gradually
increased.
Adjustable Throttle and
Brake Pedal
If equipped, the position of the
throttle and brake pedals can be
changed.
The pedals can only be adjusted
when the vehicle is in P (Park).
The switch used to adjust the
pedals is on the center stack, below
the climate controls.
Lift the switch up to move the
pedals closer to your body. Press
the switch down to move the
pedals away.
Before you start driving, fully press
the brake pedal to confirm the
adjustment is right for you.
The vehicle may have a memory
function, which lets pedal settings
be saved and recalled. See Memory
Seats 060.

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-9955992) - 2017 - crc - 4/18/17
498 Index
IndexA
Accessories andModifications . . . . . . . . . . . . . . . . . . 357
Accessory Power . . . . . . . . . . . . . . . 277
Active Fuel Management
®. . . . . . 281
Add-On Electrical Equipment . . . 350
Adding a Snow Plow or Similar Equipment . . . . . . . . . . . . . 350
Additional Information OnStar
®. . . . . . . . . . . . . . . . . . . . . . 493
Additional Maintenance and Care . . . . . . . . . . . . . . . . . . . . . . 461
Adjustable Throttle and Brake Pedal . . . . . . . . . . . . . . . . . . . 273
Adjustments Lumbar, Front Seats . . . . . . . . . . . . 58
Agreements Trademarks and License . . . . . 238
Air Cleaner/Filter, Engine . . . . . . . 371
Air Conditioning . . . . . .243, 245, 246
Air Filter, Passenger
Compartment . . . . . . . . . . . . . . . . . 250
Air Vents . . . . . . . . . . . . . . . . . . . . . . . 250
Airbag System Check . . . . . . . . . . . . . . . . . . . . . . . . . . 87
How Does an AirbagRestrain? . . . . . . . . . . . . . . . . . . . . . 77
Passenger Sensing System . . . . 81 Airbag System (cont'd)
What Makes an Airbag
Inflate? . . . . . . . . . . . . . . . . . . . . . . . . 77
What Will You See after an
Airbag Inflates? . . . . . . . . . . . . . . . 78
When Should an Airbag Inflate? . . . . . . . . . . . . . . . . . . . . . . . . 75
Where Are the Airbags? . . . . . . . . 74
Airbags
Adding Equipment to theVehicle . . . . . . . . . . . . . . . . . . . . . . . . 86
Light On-Off . . . . . . . . . . . . . . . . . . 141
On-Off Light . . . . . . . . . . . . . . . . . . 141
On-Off Switch . . . . . . . . . . . . . . . . . . 79
Passenger Status Indicator . . . 143
Readiness Light . . . . . . . . . . . . . . 141
Servicing Airbag-Equipped Vehicles . . . . . . . . . . . . . . . . . . . . . . . 85
System Check . . . . . . . . . . . . . . . . . . 73
Alarm Vehicle Security . . . . . . . . . . . . . . . . 43
All-Season Tires . . . . . . . . . . . . . . . . 401
All-Terrain Tires . . . . . . . . . . . . . . . . . 402
AM-FM Radio . . . . . . . . . . . . . . 197, 199
Antenna Fixed Mast . . . . . . . . . . . . . . . . . . . 203
Multi-band . . . . . . . . . . . . . . . . . . . . 203
Antilock Brake System (ABS) . . . 297

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-9955992) - 2017 - crc - 4/18/17
502 Index
Entry Lighting . . . . . . . . . . . . . . . . . . . 186
Equipment, Towing . . . . . . . . . . . . . 340
Event Data Recorders . . . . . . . . . . 486
Exit Lighting . . . . . . . . . . . . . . . . . . . . 186
Extender, Safety Belt . . . . . . . . . . . . 71
Exterior Lamp Controls . . . . . . . . . 178
Exterior Lamps Off Reminder . . . 180
F
FanEngine . . . . . . . . . . . . . . . . . . . . . . . . 378
Fast Idle System . . . . . . . . . . . . . . . . 276
Features
Memory . . . . . . . . . . . . . . . . . . . . . . . . . 12
Filter, Engine Air Cleaner . . . . . . . . . . . 371
Fixed Mast Antenna . . . . . . . . . . . . 203
Flash-to-Pass . . . . . . . . . . . . . . . . . . . 181
Flashers, Hazard Warning . . . . . . 182
Flat Tire . . . . . . . . . . . . . . . . . . . . . . . . 423 Changing . . . . . . . . . . . . . . . . . . . . . 425
FlexFuel E85 . . . . . . . . . . . . . . . . . . . . . . . . . . . 317
Floor Console Storage . . . . . . . . . . 121
Floor Mats . . . . . . . . . . . . . . . . . . . . . . 452
Fluid AutomaticTransmission . . . . . . . . . . . 368, 371
Brakes . . . . . . . . . . . . . . . . . . . . . . . . 381 Fluid (cont'd)
Four-Wheel Drive
Transfer Case . . . . . . . . . . . . . . . 289
Power Steering . . . . . . . . . . . . . . . 379
Washer . . . . . . . . . . . . . . . . . . . . . . . 380
Fog Lamps . . . . . . . . . . . . . . . . . . . . . 183
Folding Mirrors . . . . . . . . . . . . . . . . . . 48
Forward Automatic Braking . . . . . 310
Forward Collision Alert (FCA) System . . . . . . . . . . . . . . . . . 308
Four-Wheel Drive . . . . . . . . . . 289, 383
Four-Wheel-Drive Light . . . . . . . . . 147
Frequency Statement Radio . . . . . . . . . . . . . . . . . . . . . . . . . 484
Front Axle . . . . . . . . . . . . . . . . . . . . . . 384
Front Fog Lamp Light . . . . . . . . . . . . . . . . . . . . . . . . . . 151
Front Seats
Adjustment . . . . . . . . . . . . . . . . . . . . . 57
Heated and Ventilated . . . . . . . . . . 62
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . 315 Additives . . . . . . . . . . . . . . . . . . . . . 316
Economy Driving . . . . . . . . . . . . . . . 31
Filling a Portable FuelContainer . . . . . . . . . . . . . . . . . . . 319
Filling the Tank . . . . . . . . . . . . . . . 317
Foreign Countries . . . . . . . . . . . . 316
Gauge . . . . . . . . . . . . . . . . . . . . . . . . 136 Fuel (cont'd)
Low Fuel Warning Light . . . . . . . 150
Management, Active . . . . . . . . . . 281
Requirements, California . . . . . 316
System Messages . . . . . . . . . . . . 160
Full-Size Spare Tire . . . . . . . . . . . . 434
Fuses . . . . . . . . . . . . . . . . . . . . . . . . . . 393 Engine Compartment FuseBlock . . . . . . . . . . . . . . . . . . . . . . . . 393
Instrument Panel Fuse Block . . . . . . . . . . . . . . . . . . . 396, 398
G
Garage Door Opener . . . . . . . . . . . 174Programming . . . . . . . . . . . . . . . . . 174
Gauges Engine CoolantTemperature . . . . . . . . . . . . . . . . 138
Engine Oil Pressure . . . . . . . . . . 137
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . 136
Odometer . . . . . . . . . . . . . . . . . . . . . 136
Speedometer . . . . . . . . . . . . . . . . . 136
Tachometer . . . . . . . . . . . . . . . . . . . 136
Transmission Temperature . . . . 139
Trip Odometer . . . . . . . . . . . . . . . . 136
Voltmeter . . . . . . . . . . . . . . . . . . . . . 139
Warning Lights and Indicators . . . . . . . . . . . . . . . . . . . 131

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-9955992) - 2017 - crc - 4/18/17
504 Index
Lamps (cont'd)Exterior Controls . . . . . . . . . . . . . . 178
Exterior Lamps Off
Reminder . . . . . . . . . . . . . . . . . . . 180
Malfunction Indicator (Check Engine) . . . . . . . . . . . . . 144
Messages . . . . . . . . . . . . . . . . . . . . 160
On Reminder . . . . . . . . . . . . . . . . . 151
Reading . . . . . . . . . . . . . . . . . . . . . . 185
Lane Departure Warning (LDW) . . . . . . . . . . . . . . . . 312
Lane Departure Warning Light . . . . . . . . . . . . . . . . . . . . . . . . . . 147
Lane Keep Assist (LKA) . . . . . . . . 313
Lane Keep Assist Light . . . . . . . . . 148
Lap Belt . . . . . . . . . . . . . . . . . . . . . . . . . 71
Lap-Shoulder Belt . . . . . . . . . . . . . . . 67
LATCH System
Replacing Parts after aCrash . . . . . . . . . . . . . . . . . . . . . . . 106
LATCH, Lower Anchors and Tethers for Children . . . . . . . . . . . . 95
LED Lighting . . . . . . . . . . . . . . . . . . . . 390
Light
Hill Descent Control . . . . . . . . . . 147
Lighting Entry . . . . . . . . . . . . . . . . . . . . . . . . . 186
Exit . . . . . . . . . . . . . . . . . . . . . . . . . . . 186 Lighting (cont'd)
Illumination Control . . . . . . . . . . . 184
LED . . . . . . . . . . . . . . . . . . . . . . . . . . 390
Lights . . . . . . . . . . . . . . . . . . . . . . 147, 148
Airbag On-Off . . . . . . . . . . . . . . . . . 141
Airbag Readiness . . . . . . . . . . . . . 141
Antilock Brake System(ABS) Warning . . . . . . . . . . . . . . 146
Brake System Warning . . . . . . . 145
Charging System . . . . . . . . . . . . . 143
Check Engine (Malfunction
Indicator) . . . . . . . . . . . . . . . . . . . . 144
Cruise Control . . . . . . . . . . . . . . . . 152
Door Ajar . . . . . . . . . . . . . . . . . . . . . 152
Engine Coolant Temperature Warning . . . . . . . 149
Engine Oil Pressure . . . . . . . . . . 150
Flash-to-Pass . . . . . . . . . . . . . . . . . 181
Four-Wheel-Drive . . . . . . . . . . . . . 147
Front Fog Lamp . . . . . . . . . . . . . . 151
High-Beam On . . . . . . . . . . . . . . . . 151
High/Low Beam Changer . . . . . 180
Lane Departure Warning . . . . . . 147
Low Fuel Warning . . . . . . . . . . . . 150
Safety Belt Reminders . . . . . . . . 140
Security . . . . . . . . . . . . . . . . . . . . . . 151
StabiliTrak
®OFF . . . . . . . . . . . . . 148
Tire Pressure . . . . . . . . . . . . . . . . . 150 Lights (cont'd)
Tow/Haul Mode . . . . . . . . . . . . . . . 147
Traction Control System
(TCS)/StabiliTrak
®. . . . . . . . . . 149
Traction Off . . . . . . . . . . . . . . . . . . . 148
Locking Rear Axle . . . . . . . . . . . . . . 302
Locks Automatic Door . . . . . . . . . . . . . . . . . 40
Delayed Locking . . . . . . . . . . . . . . . . 40
Door . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Lockout Protection . . . . . . . . . . . . . . 41
Power Door . . . . . . . . . . . . . . . . . . . . . 40
Safety . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Loss of Control . . . . . . . . . . . . . . . . . 256
Low Fuel Warning Light . . . . . . . . . 150
Low-Profile Tires . . . . . . . . . . . . . . . . 402
Lower Anchors and Tethers for Children (LATCH
System) . . . . . . . . . . . . . . . . . . . . . . . . 95
Lumbar Adjustment . . . . . . . . . . . . . . 58 Front Seats . . . . . . . . . . . . . . . . . . . . . 58
M
MaintenanceRecords . . . . . . . . . . . . . . . . . . . . . . 468
Maintenance and Care Additional . . . . . . . . . . . . . . . . . . . . . 461
Maintenance Schedule . . . . . . . . . 455

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-9955992) - 2017 - crc - 4/18/17
506 Index
OnStar®Overview . . . . . . . . . . . . . . 488
OnStar®Security . . . . . . . . . . . . . . . 489
Operating Mode Overheated EngineProtection . . . . . . . . . . . . . . . . . . . 378
Operation Fog Lamps . . . . . . . . . . . . . . . . . . . 183
Ordering Service Publications . . . . . . . . . . 483
Outlets Power . . . . . . . . . . . . . . . . . . . . . . . . 128
Overheated Engine Protection Operating Mode . . . . 378
Overheating, Engine . . . . . . . . . . . . 376
Overview . . . . . . . . . . . . . . . . . . 189, 193
P
Park Shifting Into . . . . . . . . . . . . . . . . . . . 279
Shifting Out of . . . . . . . . . . . . . . . . 280
Parking
Brake . . . . . . . . . . . . . . . . . . . . . . . . . 297
Brake and P (Park)Mechanism Check . . . . . . . . . . 388
Over Things That Burn . . . . . . . 281
Parking Assist . . . . . . . . . . . . . . . . . . 306
Parking or Backing
Assistance Systems . . . . . . . . . . 306 Passenger Airbag Status
Indicator . . . . . . . . . . . . . . . . . . . . . . 143
Passenger Compartment Air Filter . . . . . . . . . . . . . . . . . . . . . . . . . . 250
Passenger Sensing System . . . . . 81
Perchlorate Materials Requirements, California . . . . . . 357
Personalization Vehicle . . . . . . . . . . . . . . . . . . . . . . . 167
Phone Apple CarPlay and
Android Auto . . . . . . . . . . . . . . . . 237
Bluetooth . . . . . . . . 222, 224, 228, 233
Pickup Conversion to
Chassis Cab . . . . . . . . . . . . . . . . . . 354
Port USB . . . . . . . . . . . . . . . . . . . . . 206, 208
Power Door Locks . . . . . . . . . . . . . . . . . . . . . 40
Mirrors . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Outlets . . . . . . . . . . . . . . . . . . . . . . . 128
Protection, Battery . . . . . . . . . . . . 187
Retained Accessory (RAP) . . . 277
Seat Adjustment . . . . . . . . . . . . . . . . 58
Steering Fluid . . . . . . . . . . . . . . . . . 379
Windows . . . . . . . . . . . . . . . . . . . . . . . 51
Power Assist Steps . . . . . . . . . . . . . . 42 Pregnancy, Using Safety Belts . . . 70
Privacy
Vehicle Data Recording . . . . . . . 485
Program Courtesy Transportation . . . . . . 480
Proposition 65 Warning,
California . . . . . . . . . . . .357, 383, 435
R
Radio Frequency Statement . . . . 484
Radio Reception . . . . . . . . . . . . . . . . 202
Radios
AM-FM Radio . . . . . . . . . . . . 197, 199
Satellite . . . . . . . . . . . . . . . . . . 200, 201
Reading Lamps . . . . . . . . . . . . . . . . . 185
Rear Axle . . . . . . . . . . . . . . . . . . . . . . . 385 Locking . . . . . . . . . . . . . . . . . . . . . . . 302
Rear Seats . . . . . . . . . . . . . . . . . . 63, 64
Rear Vision Camera (RVC) . . . . . 306
Rear Windows . . . . . . . . . . . . . . . . . . . 53
Rearview Mirrors . . . . . . . . . . . . . . . . 50 Automatic Dimming . . . . . . . . . . . . . 50
Reclining Seatbacks . . . . . . . . . . . . . 59
Recognition Voice . . . . . . . . . . . . . . . . . . . . . . . . . 216
Recommended Fluids and Lubricants . . . . . . . . . . . . . . . . . . . . . 464

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-9955992) - 2017 - crc - 4/18/17
Index 507
RecordsMaintenance . . . . . . . . . . . . . . . . . . 468
Recreational Vehicle Towing . . . . 440
Reimbursement Program, GM Mobility . . . . . . . . . . . . . . . . . . . 478
Remote Keyless Entry (RKE) System . . . . . . . . . . . . . . . . . . . . . . . . . 36
Remote Vehicle Start . . . . . . . . . . . . 38
Replacement Glass . . . . . . . . . . . . . . . . . . . . . . . . . 389
Replacement Bulbs . . . . . . . . . . . . . 392
Replacement Parts
Airbags . . . . . . . . . . . . . . . . . . . . . . . . . 87
Maintenance . . . . . . . . . . . . . . . . . . 466
Replacing Airbag System . . . . . . . . 87
Replacing LATCH System Parts after a Crash . . . . . . . . . . . . 106
Replacing Safety Belt System Parts after a Crash . . . . . . . . . . . . . 72
Reporting Safety Defects Canadian Government . . . . . . . . 485
General Motors . . . . . . . . . . . . . . . 485
U.S. Government . . . . . . . . . . . . . 484
Restraints Where to Put . . . . . . . . . . . . . . . . . . . 93
Retained Accessory Power (RAP) . . . . . . . . . . . . . . . . . . 277
Reverse Tilt Mirrors . . . . . . . . . . . . . . 50 Ride Control Systems
Messages . . . . . . . . . . . . . . . . . . . . 161
Roads Driving, Wet . . . . . . . . . . . . . . . . . . 261
Roadside Assistance Program . . . . . . . . . . . . . . . . . . . . . . . 478
Roof
Sunroof . . . . . . . . . . . . . . . . . . . . . . . . . 53
Rotation, Tires . . . . . . . . . . . . . . . . . . 415
Routing, Engine Drive Belt . . . . . . 473
Running the Vehicle While Parked . . . . . . . . . . . . . . . . . . . . . . . . 282
S
Safety Belts . . . . . . . . . . . . . . . . . . . . . 65Care . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
Extender . . . . . . . . . . . . . . . . . . . . . . . . 71
How to Wear Safety BeltsProperly . . . . . . . . . . . . . . . . . . . . . . . 66
Lap Belt . . . . . . . . . . . . . . . . . . . . . . . . 71
Lap-Shoulder Belt . . . . . . . . . . . . . . 67
Messages . . . . . . . . . . . . . . . . . . . . 163
Reminders . . . . . . . . . . . . . . . . . . . . 140
Replacing after a Crash . . . . . . . . 72
Use During Pregnancy . . . . . . . . . . 70
Safety Defects Reporting
Canadian Government . . . . . . . . 485
General Motors . . . . . . . . . . . . . . . 485 Safety Defects Reporting (cont'd)
U.S. Government . . . . . . . . . . . . . 484
Safety Locks . . . . . . . . . . . . . . . . . . . . . 41
Safety System Check . . . . . . . . . . . . 71
Satellite Radio . . . . . . . . . . . . . 200, 201
Scheduling Appointments . . . . . . . 480
Seats Adjustment, Front . . . . . . . . . . . . . . . 57
Center Seat . . . . . . . . . . . . . . . . . . . . 57
Head Restraints . . . . . . . . . . . . . . . . 56
Heated and Ventilated Front . . . . 62
Lumbar Adjustment, Front . . . . . . 58
Memory . . . . . . . . . . . . . . . . . . . . . . . . . 60
Power Adjustment, Front . . . . . . . 58
Rear . . . . . . . . . . . . . . . . . . . . . . . . 63, 64
Reclining Seatbacks . . . . . . . . . . . . 59
Securing Child Restraints . . . . . . . . . . . . . . . . 106, 110
Security Light . . . . . . . . . . . . . . . . . . . . . . . . . . 151
Messages . . . . . . . . . . . . . . . . . . . . 163
OnStar
®. . . . . . . . . . . . . . . . . . . . . . 489
Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . 43
Vehicle Alarm . . . . . . . . . . . . . . . . . . . 43
Service . . . . . . . . . . . . . . . . . . . . . . . . . 251 Accessories andModifications . . . . . . . . . . . . . . . . 357