2017 GMC YUKON seat adjustment

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-9955936) - 2017 - crc - 11/9/16
Seats and Restraints 65
To adjust the seat:
.Move the seat forward or
rearward by sliding the control
forward or rearward.
. Raise or lower the front part of
the seat cushion by moving the
front of the control up or down.
. Raise or lower the seat by
moving the rear of the control up
or down.
To adjust the seatback, see
Reclining Seatbacks 065.
To adjust the lumbar support, see
Lumbar Adjustment 065.
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 0253.Lumbar Adjustment
To adjust the lumbar support:
.
Press and hold the control
forward to increase or rearward
to decrease upper and lower
lumbar support at the same time.
. 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.
Reclining Seatbacks
To recline the seatback:
.Tilt the top of the control
rearward to recline.
. Tilt the top of the control forward
to raise.
{Warning
Sitting in a reclined position when
the vehicle is in motion can be
dangerous. Even when buckled
up, the safety belts cannot do
their job.
(Continued)

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-9955936) - 2017 - crc - 11/9/16
82 Seats and Restraints
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
belt and the vehicle.
Shoulder Belt Height Adjuster
The vehicle has a shoulder belt
height adjuster for the driver and
front outboard passenger 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. SeeHow
to Wear Safety Belts Properly 079.
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.
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. Safety belt
pretensioners can also help tighten
the safety belts in a side crash or a
rollover event.
Pretensioners work only once. If the
pretensioners activate in a crash,
the pretensioners and probably
other parts of the vehicle's safety
belt system will need to be replaced.
See
Replacing Safety Belt System
Parts after a Crash 086.
Do not sit on the outboard safety
belt while entering or exiting the
vehicle or at any time while sitting in
the seat. Sitting on the safety belt
can damage the webbing and
hardware.

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-9955936) - 2017 - crc - 11/9/16
218 Driving and Operating
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
0 272 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 to the left of the steering
wheel.
Press the switch to the left to move
the pedals closer to your body.
Press the switch to the right 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 066.
Ignition Positions (Key
Access)
Vehicles with Key Access have an
ignition switch with four different
positions.
To shift out of P (Park), the ignition
must be in ON/RUN or ACC/
ACCESSORY and the regular brake
pedal must be applied.
0 (STOPPING THE ENGINE/LOCK/
OFF) : When the vehicle is stopped,
turn the ignition switch to LOCK/
OFF to turn the engine off. Retained

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-9955936) - 2017 - crc - 11/9/16
Index 417
IndexA
Accessories andModifications . . . . . . . . . . . . . . . . . . 286
Accessory Power . . . . . . . . . . . . . . . 225
Active Fuel Management
®. . . . . . 227
Adaptive Cruise Control . . . . . . . . 246
Add-On Electrical Equipment . . . 283
Additional Information OnStar
®. . . . . . . . . . . . . . . . . . . . . . 412
Additional Maintenance
and Care . . . . . . . . . . . . . . . . . . . . . . 383
Adjustable Throttle and Brake Pedal . . . . . . . . . . . . . . . . . . . 218
Adjustments
Lumbar, Front Seats . . . . . . . . . . . . 65
Air Cleaner/Filter, Engine . . . . . . . 298
Air Conditioning . . . . . . . . . . . 192, 196
Air Filter, Passenger Compartment . . . . . . . . . . . . . . . . . 198
Air Vents . . . . . . . . . . . . . . . . . . . . . . . 197
Airbag System Check . . . . . . . . . . . . . . . . . . . . . . . . . . 98
How Does an AirbagRestrain? . . . . . . . . . . . . . . . . . . . . . 91
Passenger Sensing System . . . . 93
What Makes an Airbag Inflate? . . . . . . . . . . . . . . . . . . . . . . . . 91 Airbag System (cont'd)
What Will You See after an
Airbag Inflates? . . . . . . . . . . . . . . . 92
When Should an Airbag
Inflate? . . . . . . . . . . . . . . . . . . . . . . . . 90
Where Are the Airbags? . . . . . . . . 88
Airbags Adding Equipment to theVehicle . . . . . . . . . . . . . . . . . . . . . . . . 98
Passenger Status Indicator . . . 143
Readiness Light . . . . . . . . . . . . . . 143
Servicing Airbag-Equipped Vehicles . . . . . . . . . . . . . . . . . . . . . . . 97
System Check . . . . . . . . . . . . . . . . . . 87
Alarm Vehicle Security . . . . . . . . . . . . . . . . 50
Alert Lane Change . . . . . . . . . . . . . . . . . 261
Side Blind Zone (SBZA) . . . . . . 261
All-Season Tires . . . . . . . . . . . . . . . . 328
All-Terrain Tires . . . . . . . . . . . . . . . . . 329
Antilock Brake System (ABS) . . . 238 Warning Light . . . . . . . . . . . . . . . . . 147
Appearance Care Exterior . . . . . . . . . . . . . . . . . . . . . . . 366
Interior . . . . . . . . . . . . . . . . . . . . . . . . 370
Armrest Storage . . . . . . . . . . . . . . . . 122

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-9955936) - 2017 - crc - 11/9/16
Index 423
Lights (cont'd)Charging System . . . . . . . . . . . . . 144
Cruise Control . . . . . . . . . . . . . . . . 152
Door Ajar . . . . . . . . . . . . . . . . . . . . . 153
Engine Coolant
Temperature Warning . . . . . . . 150
Engine Oil Pressure . . . . . . . . . . 151
Flash-to-Pass . . . . . . . . . . . . . . . . . 184
Four-Wheel-Drive . . . . . . . . . . . . . 148
Front Fog Lamp . . . . . . . . . . . . . . 152
High-Beam On . . . . . . . . . . . . . . . . 152
High/Low Beam Changer . . . . . 184
Low Fuel Warning . . . . . . . . . . . . 151
Safety Belt Reminders . . . . . . . . 142
Security . . . . . . . . . . . . . . . . . . . . . . 151
StabiliTrak
®OFF . . . . . . . . . . . . . 149
Tire Pressure . . . . . . . . . . . . . . . . . 150
Tow/Haul Mode . . . . . . . . . . . . . . . 148
Traction Control System (TCS)/StabiliTrak
®. . . . . . . . . . 149
Traction Off . . . . . . . . . . . . . . . . . . . 149
Locking Rear Axle . . . . . . . . . . . . . . 243
Locks Automatic Door . . . . . . . . . . . . . . . . . 43
Delayed Locking . . . . . . . . . . . . . . . . 43
Door . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Lockout Protection . . . . . . . . . . . . . . 43
Power Door . . . . . . . . . . . . . . . . . . . . . 43 Locks (cont'd)
Safety . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Loss of Control . . . . . . . . . . . . . . . . . 204
Low Fuel Warning Light . . . . . . . . . 151
Low-Profile Tires . . . . . . . . . . . . . . . . 329
Lower Anchors and Tethers for Children (LATCH
System) . . . . . . . . . . . . . . . . . . . . . . . 106
Lumbar Adjustment . . . . . . . . . . . . . . 65
Front Seats . . . . . . . . . . . . . . . . . . . . . 65
M
Magnetic Ride Control . . . . . . . . . . 243
MaintenanceRecords . . . . . . . . . . . . . . . . . . . . . . 389
Maintenance and Care Additional . . . . . . . . . . . . . . . . . . . . . 383
Maintenance Schedule . . . . . . . . . 376 Recommended Fluids and
Lubricants . . . . . . . . . . . . . . . . . . . 386
Transfer Case . . . . . . . . . . . . . . . . 235
Malfunction Indicator Lamp . . . . . 145
Manual Mode . . . . . . . . . . . . . . . . . . . 231
Memory Features . . . . . . . . . . . . . . . . 12
Memory Seats . . . . . . . . . . . . . . . . . . . 66
Messages Airbag System . . . . . . . . . . . . . . . . 167
Battery Voltage andCharging . . . . . . . . . . . . . . . . . . . . 160 Messages (cont'd)
Brake System . . . . . . . . . . . . . . . . 160
Compass . . . . . . . . . . . . . . . . . . . . . 161
Door Ajar . . . . . . . . . . . . . . . . . . . . . 162
Engine Cooling System . . . . . . . 162
Engine Oil . . . . . . . . . . . . . . . . . . . . 163
Engine Power . . . . . . . . . . . . . . . . 163
Fuel System . . . . . . . . . . . . . . . . . . 163
Key and Lock . . . . . . . . . . . . . . . . . 164
Lamp . . . . . . . . . . . . . . . . . . . . . . . . . 164
Object Detection System . . . . . 164
Ride Control System . . . . . . . . . . 166
Security . . . . . . . . . . . . . . . . . . . . . . 167
Starting the Vehicle . . . . . . . . . . . 168
Steering System . . . . . . . . . . . . . . 168
Tire . . . . . . . . . . . . . . . . . . . . . . . . . . . 168
Transmission . . . . . . . . . . . . . . . . . 169
Vehicle . . . . . . . . . . . . . . . . . . . . . . . 159
Vehicle Reminder . . . . . . . . . . . . . 170
Washer Fluid . . . . . . . . . . . . . . . . . 171
Mirror Child-View . . . . . . . . . . . . . . . . . . . . . . 57
Mirrors
Automatic Dimming . . . . . . . . . . . . . 55
Automatic DimmingRearview . . . . . . . . . . . . . . . . . . . . . . 57
Blind Spot . . . . . . . . . . . . . . . . . . . . . . 55
Convex . . . . . . . . . . . . . . . . . . . . . . . . . 54

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-9955936) - 2017 - crc - 11/9/16
424 Index
Mirrors (cont'd)Folding . . . . . . . . . . . . . . . . . . . . . . . . . 55
Heated . . . . . . . . . . . . . . . . . . . . . . . . . 55
Manual Rearview . . . . . . . . . . . . . . . 57
Power . . . . . . . . . . . . . . . . . . . . . . . . . . 54
Tilt in Reverse . . . . . . . . . . . . . . . . . . 56
Mirrors, Interior Rearview . . . . . . . . 57
Monitor System, Tire Pressure . . . . . . . . . . . . . . . . . . . . . . 336
N
Navigation
OnStar®. . . . . . . . . . . . . . . . . . . . . . 409
Net, Convenience . . . . . . . . . . . . . . 123
New Vehicle Break-In . . . . . . . . . . . 217
Noise Control System . . . . . . . . . . 309
O
Object Detection System Messages . . . . . . . . . . . . . . . . . . . . . 164
Odometer . . . . . . . . . . . . . . . . . . . . . . . 138 Trip . . . . . . . . . . . . . . . . . . . . . . . . . . . 138
Off-Road . . . . . . . . . . . . . . . . . . . . . . . 204 Driving . . . . . . . . . . . . . . . . . . . . . . . . 204
Recovery . . . . . . . . . . . . . . . . . . . . . 203
Oil Engine . . . . . . . . . . . . . . . . . . . . . . . . 291
Engine Oil Life System . . . . . . . 293
Engine Oil Pressure Gauge . . . 139 Oil (cont'd)
Messages . . . . . . . . . . . . . . . . . . . . 163
Pressure Light . . . . . . . . . . . . . . . . 151
Older Children, Restraints . . . . . . . 99
Online Owner Center . . . . . . . . . . . 396
OnStar . . . . . . . . . . . . . . . . . . . . . . . . . 405
OnStar
®Additional
Information . . . . . . . . . . . . . . . . . . . . 412
OnStar
®Connections . . . . . . . . . . . 409
OnStar®Diagnostics . . . . . . . . . . . . 411
OnStar®Emergency . . . . . . . . . . . . 408
OnStar®Navigation . . . . . . . . . . . . . 409
OnStar®Overview . . . . . . . . . . . . . . 407
OnStar®Security . . . . . . . . . . . . . . . 408
Operation Fog Lamps . . . . . . . . . . . . . . . . . . . 187
Ordering Service Publications . . . . . . . . . . 402
Outlets Power . . . . . . . . . . . . . . . . . . . . . . . . 131
Overheating, Engine . . . . . . . . . . . . 302
P
Park Shifting Into . . . . . . . . . . . . . . . . . . . 225
Shifting Out of . . . . . . . . . . . . . . . . 226
Parking Brake . . . . . . . . . . . . . . . . . . . . . . . . . 239 Parking (cont'd)
Brake and P (Park)
Mechanism Check . . . . . . . . . . .311
Extended . . . . . . . . . . . . . . . . . . . . . 227
Over Things That Burn . . . . . . . 227
Parking Assist . . . . . . . . . . . . . . . . . . 254
Parking or Backing Assistance Systems . . . . . . . . . . 254
Passenger Airbag Status
Indicator . . . . . . . . . . . . . . . . . . . . . . 143
Passenger Compartment Air Filter . . . . . . . . . . . . . . . . . . . . . . . . . . 198
Passenger Sensing System . . . . . 93
Perchlorate Materials Requirements, California . . . . . . 285
Personalization Vehicle . . . . . . . . . . . . . . . . . . . . . . . 171
Power
Door Locks . . . . . . . . . . . . . . . . . . . . . 43
Mirrors . . . . . . . . . . . . . . . . . . . . . . . . . . 54
Outlets . . . . . . . . . . . . . . . . . . . . . . . 131
Protection, Battery . . . . . . . . . . . . 190
Retained Accessory (RAP) . . . 225
Seat Adjustment . . . . . . . . . . . . . . . . 64
Windows . . . . . . . . . . . . . . . . . . . . . . . 58
Power Assist Steps . . . . . . . . . . . . . . 49
Pregnancy, Using Safety Belts . . . 84

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-9955936) - 2017 - crc - 11/9/16
426 Index
SeatsHead Restraints . . . . . . . . . . . . . . . . 63
Heated and Ventilated Front . . . . 69
Heated, Rear . . . . . . . . . . . . . . . . . . . 71
Lumbar Adjustment, Front . . . . . . 65
Memory . . . . . . . . . . . . . . . . . . . . . . . . . 66
Power Adjustment, Front . . . . . . . 64
Rear . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
Reclining Seatbacks . . . . . . . . . . . . 65
Second Row . . . . . . . . . . . . . . . . . . . . 71
Third Row Seat . . . . . . . . . . . . . . . . . 76
Second Row Seats . . . . . . . . . . . . . . 71
Securing Child Restraints . . . . . . . . . . . . . . . . 114, 117
Security Light . . . . . . . . . . . . . . . . . . . . . . . . . . 151
Messages . . . . . . . . . . . . . . . . . . . . 167
OnStar
®. . . . . . . . . . . . . . . . . . . . . . 408
Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . 50
Vehicle Alarm . . . . . . . . . . . . . . . . . . . 50
Service . . . . . . . . . . . . . . . . . . . . . . . . . 199
Accessories andModifications . . . . . . . . . . . . . . . . 286
Doing Your Own Work . . . . . . . . 286
Engine Soon Light . . . . . . . . . . . . 145
Maintenance Records . . . . . . . . 389
Maintenance, General Information . . . . . . . . . . . . . . . . . . 375 Service (cont'd)
Parts Identification Label . . . . . 390
Publications Ordering
Information . . . . . . . . . . . . . . . . . . 402
Scheduling Appointments . . . . . 399
Services Special Application . . . . . . . . . . . 382
Servicing the Airbag . . . . . . . . . . . . . 97
Shift Lock Control Function Check, Automatic
Transmission . . . . . . . . . . . . . . . . . . 311
Shifting Into Park . . . . . . . . . . . . . . . . . . . . . . 225
Out of Park . . . . . . . . . . . . . . . . . . . 226
Side Blind Zone Alert (SBZA) . . . 261
Signals, Turn and Lane-Change . . . . . . . . . . . . . . . . . 186
Special Application Services . . . . 382
Specifications and
Capacities . . . . . . . . . . . . . . . . . . . . . 391
Speedometer . . . . . . . . . . . . . . . . . . . 138
StabiliTrak OFF Light . . . . . . . . . . . . . . . . . . . . . 149
Start Assist, Hill . . . . . . . . . . . . . . . . . 240
Start Vehicle, Remote . . . . . . . . . . . 41
Starter Switch Check . . . . . . . . . . . 310
Starting the Engine . . . . . . . . . . . . . 222 Starting the Vehicle
Messages . . . . . . . . . . . . . . . . . . . . . 168
Steering . . . . . . . . . . . . . . . . . . . . . . . . 203 Heated Wheel . . . . . . . . . . . . . . . . 126
Wheel Adjustment . . . . . . . . . . . . 126
Wheel Controls . . . . . . . . . . . . . . . 126
Steering System Messages . . . . . 168
Steps
Power Assist . . . . . . . . . . . . . . . . . . . 49
Storage Rear . . . . . . . . . . . . . . . . . . . . . . . . . . 122
Storage Areas Armrest . . . . . . . . . . . . . . . . . . . . . . . 122
Center Console . . . . . . . . . . . . . . . 122
Convenience Net . . . . . . . . . . . . . 123
Glove Box . . . . . . . . . . . . . . . . . . . . 121
Instrument Panel . . . . . . . . . . . . . 121
Roof Rack System . . . . . . . . . . . . 123
Sunglasses . . . . . . . . . . . . . . . . . . . 122
Storage Compartments . . . . . . . . . 121
Stuck Vehicle . . . . . . . . . . . . . . . . . . . 212
Sun Visors . . . . . . . . . . . . . . . . . . . . . . . 59
Sunglass Storage . . . . . . . . . . . . . . . 122
Sunroof . . . . . . . . . . . . . . . . . . . . . . . . . . 60
Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . 3
System Forward CollisionAlert (FCA) . . . . . . . . . . . . . . . . . . 257