
GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-9955992) - 2017 - crc - 5/3/16
26 In Brief
Premium Recommended Fuel
Use premium 93 octane unleaded
gasoline in your vehicle. Unleaded
gasoline with an octane rating as
low as 87 may be used, but it will
reduce performance and fuel
economy. SeeFuel0300.
E85 or FlexFuel
FlexFuel Possible
Certain models are compatible with
E85 fuel. See Fuel0300.
Engine Oil Life System
The engine oil life system calculates
engine oil life based on vehicle use
and, on most vehicles, displays a
DIC message when it is necessary
to change the engine oil and filter.
The oil life system should be reset
to 100% only following an oil
change. Resetting the Oil Life System
To reset the engine oil life system:
1. Display OIL LIFE REMAINING on the DIC. See Driver
Information Center (DIC) 0141.
If the vehicle does not have
DIC buttons, the vehicle must
be in P (Park) to access this
display.
2. Press and hold the
Vbutton on
the DIC, or the trip odometer
reset stem if the vehicle does
not have DIC buttons, for
several seconds. The oil life
will change to 100%.
The oil life system can also be reset
as follows: 1. Turn the ignition to ON/RUN with the engine off.
2. Fully press the accelerator pedal slowly three times within
five seconds.
3. Display OIL LIFE REMAINING on the DIC. If the display
shows 100%, the system is
reset.
See Engine Oil Life System 0351.
Driving for Better Fuel
Economy
Driving habits can affect fuel
mileage. Here are some driving tips
to get the best fuel economy
possible.
.
Avoid fast starts and accelerate
smoothly.
. Brake gradually and avoid
abrupt stops.
. Avoid idling the engine for long
periods of time.
. When road and weather
conditions are appropriate, use
cruise control.
. Always follow posted speed
limits or drive more slowly when
conditions require.
. Keep vehicle tires properly
inflated.
. Combine several trips into a
single trip.
. Replace the vehicle's tires with
the same TPC Spec number
molded into the tire's sidewall
near the size. 

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-9955992) - 2017 - crc - 5/3/16
438 Service and Maintenance
keep the vehicle in good working
condition, improves fuel economy,
and reduces vehicle emissions.
Because of the way people use
vehicles, maintenance needs vary.
There may need to be more
frequent checks and services.
Normal Service
All maintenance services, including
those listed under Additional
Required Services, are for
vehicles that:
.Carry passengers and cargo
within recommended limits on
the Tire and Loading Information
label. See Vehicle Load
Limits 0250.
. Are driven on reasonable road
surfaces within legal driving
limits.
. Use the recommended fuel. See
Fuel 0300. Severe Service
In addition to the normal service
schedule, some vehicles require
service more often. Severe service
is for vehicles that are:
.
Mainly driven in heavy city traffic
in hot weather.
. Mainly driven in hilly or
mountainous terrain.
. Frequently towing a trailer.
. Used for high-speed or
competitive driving.
. Used for taxi, police, or delivery
service.
{Warning
Performing maintenance work can
be dangerous and can cause
serious injury. Perform
maintenance work only if the
required information, proper tools,
and equipment are available.
If they are not, see your dealer to
have a trained technician do the
work. See Doing Your Own
Service Work 0342.
Maintenance
Schedule
Owner Checks and Services
At Each Fuel Stop
.
Check the engine oil level. See
Engine Oil 0348.
Once a Month
. Check the tire inflation
pressures. See Tire
Pressure 0391.
. Inspect the tires for wear. See
Tire Inspection 0397.
. Check the windshield washer
fluid level. See Washer
Fluid 0363.
Engine Oil Change
When the CHANGE ENGINE OIL
SOON message displays, have the
engine oil and filter changed within
the next 1 000 km/600 mi. If driven
under the best conditions, the
engine oil life system may not
indicate the need for vehicle service
for up to a year. The engine oil and
filter must be changed at least once 

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-9955992) - 2017 - crc - 5/3/16
Service and Maintenance 439
a year and the oil life system must
be reset. Your trained dealer
technician can perform this work.
If the engine oil life system is reset
accidentally, service the vehicle
within 5 000 km/3,000 mi since the
last service. Reset the oil life
system when the oil is changed.
SeeEngine Oil Life System 0351.
Passenger Compartment Air
Filter
The passenger compartment air
filter removes dust, pollen, and
other airborne irritants from outside
air that is pulled into the vehicle.
The filter should be replaced as part
of routine scheduled maintenance.
Inspect the passenger compartment
air filter every 36 000 km/
22,500 miles or two years,
whichever comes first. Replace if
necessary. More frequent
replacement may be needed if the
vehicle is driven in areas with heavy
traffic, areas with poor air quality,
or areas with high dust levels.
Replacement may also be needed if
there is a reduction in air flow,
excessive window fogging, or odors.
Tire Rotation and Required
Services Every 12 000 km/
7,500 mi
Rotate the tires, if recommended for
the vehicle, and perform the
following services. See Tire
Rotation 0398.
. Check engine oil level and oil
life percentage. If needed,
change engine oil and filter, and
reset oil life system. See Engine
Oil 0348 andEngine Oil Life
System 0351.
. Check engine coolant level. See
Engine Coolant 0357.
. Check windshield washer fluid
level. See Washer Fluid 0363.
. Visually inspect windshield wiper
blades for wear, cracking,
or contamination. See Exterior
Care 0427. Replace worn or
damaged wiper blades. See
Wiper Blade
Replacement 0372.
. Check tire inflation pressures.
See Tire Pressure 0391. .
Inspect tire wear. See Tire
Inspection 0397.
. Visually check for fluid leaks.
. Inspect engine air cleaner filter.
See Engine Air Cleaner/
Filter 0355.
. Inspect brake system. See
Exterior Care 0427.
. Visually inspect steering,
suspension, and chassis
components for damaged, loose,
or missing parts or signs of wear
at least once a year. See
Exterior Care 0427. Lubricate
the suspension and steering
components at least every other
oil change. (If equipped with
grease fittings)
. Check restraint system
components. See Safety System
Check 065.
. Visually inspect fuel system for
damage or leaks.
. Visually inspect exhaust system
and nearby heat shields for
loose or damaged parts. 

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-9955992) - 2017 - crc - 5/3/16
Service and Maintenance 441
Maintenance Schedule
Additional Required
Services - Normal12 000 km/7,500 mi
24 000 km/15,000 mi
36 000 km/22,500 mi
48 000 km/30,000 mi
60 000 km/37,500 mi
72 000 km/45,000 mi
84 000 km/52,500 mi
96 000 km/60,000 mi
108 000 km/67,500 mi
120 000 km/75,000 mi
132 000 km/82,500 mi
144 000 km/90,000 mi
156 000 km/97,500 mi
168 000 km/105,000 mi 180 000 km/112,500 mi
192 000 km/120,000 mi
204 000 km/127,500 mi
216 000 km/135,000 mi
228 000 km/142,500 mi
240 000 km/150,000 mi
Rotate tires and perform Required Services.
Check engine oil level and oil life percentage.
Change engine oil and filter, if needed.@ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @
Replace passenger compartment air filter. (1)@ @@@@@
Inspect evaporative control system. (2)@ @@
Replace engine air cleaner filter. (3)@@@
Replace spark plugs. Inspect spark plug wires.@
For GVW under 3 900 kg (8,600 lb), change
transfer case fluid, if equipped with 4WD. (4)@
For GVW over 3 900 kg (8,600 lb), change
transfer case fluid, if equipped with 4WD. (4)@@@
Drain and fill engine cooling system. (5)@
Visually inspect accessory drive belts. (6)@
Replace brake fluid. (7)
Footnotes—Maintenance
Schedule Additional Required
Services —Normal
(1) Or every two years, whichever
comes first. More frequent
replacement may be needed if the
vehicle is driven in areas with heavy traffic, poor air quality, areas with
high dust levels or are sensitive to
environmental allergens. Filter
replacement may also be needed if
you notice reduced airflow, windows
fogging up, or odors. Your local GM
Service location can help you
determine when it is the right time to
replace your filter.
(2)
Visually check all fuel and vapor
lines and hoses for proper
attachment, connection, routing, and
condition. 

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-9955992) - 2017 - crc - 5/3/16
444 Service and Maintenance
(2)Visually check all fuel and vapor
lines and hoses for proper
attachment, connection, routing, and
condition.
(3) Or every four years, whichever
comes first. If driving in dusty
conditions, inspect the filter at each
oil change or more often as needed.
(4) Do not directly power wash the
transfer case and/or front/rear axle
output seals. High pressure water
can overcome the seals and
contaminate the transfer case fluid.
Contaminated fluid will decrease the
life of the transfer case and/or axles
and should be replaced.
(5) Or every five years, whichever
comes first. See Cooling
System 0356.
(6) Or every 10 years, whichever
comes first. Inspect for fraying,
excessive cracking, or damage;
replace, if needed.
(7) Replace brake fluid every five
years. See Brake Fluid 0365.Special Application
Services
.
Vehicles with Dual Wheels:
Check dual wheel nut torque at
160, 1 600, and 10 000 km (100,
1,000, and 6,000 mi) of driving.
Repeat this service whenever a
tire/wheel is serviced or
removed.
. Severe Commercial Use
Vehicles Only: Lubricate chassis
components every oil change.
. Have underbody flushing service
performed. See “Underbody
Maintenance” inExterior
Care 0427.
Additional
Maintenance and Care
Your vehicle is an important
investment and caring for it properly
may help to avoid future costly
repairs. To maintain vehicle
performance, additional
maintenance services may be
required.
It is recommended that your dealer
perform these services —their
trained dealer technicians know
your vehicle best. Your dealer can
also perform a thorough
assessment with a multi-point
inspection to recommend when your
vehicle may need attention.
The following list is intended to
explain the services and conditions
to look for that may indicate
services are required.
Battery
The 12-volt battery supplies power
to start the engine and operate any
additional electrical accessories. 

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-9955992) - 2017 - crc - 5/3/16
Index 481
IndexA
Accessories andModifications . . . . . . . . . . . . . . . . . . 341
Accessory Power . . . . . . . . . . . . . . . 262
Active Fuel Management
®. . . . . . 266
Add-On Electrical Equipment . . . 334
Adding a Snow Plow or Similar Equipment . . . . . . . . . . . . . 334
Additional Information OnStar
®. . . . . . . . . . . . . . . . . . . . . . 476
Additional Maintenance and Care . . . . . . . . . . . . . . . . . . . . . . 444
Adjustable Throttle and Brake Pedal . . . . . . . . . . . . . . . . . . . 258
Adjustments Lumbar, Front Seats . . . . . . . . . . . . 52
Agreements Trademarks and License . . . . . 225
Air Cleaner/Filter, Engine . . . . . . . 355
Air Filter, Passenger
Compartment . . . . . . . . . . . . . . . . . 235
Air Vents . . . . . . . . . . . . . . . . . . . . . . . 234
Airbag System Check . . . . . . . . . . . . . . . . . . . . . . . . . . 80
How Does an Airbag
Restrain? . . . . . . . . . . . . . . . . . . . . . 71
Passenger Sensing System . . . . 75 Airbag System (cont'd)
What Makes an Airbag
Inflate? . . . . . . . . . . . . . . . . . . . . . . . . 71
What Will You See after an
Airbag Inflates? . . . . . . . . . . . . . . . 71
When Should an Airbag Inflate? . . . . . . . . . . . . . . . . . . . . . . . . 69
Where Are the Airbags? . . . . . . . . 68
Airbags
Adding Equipment to theVehicle . . . . . . . . . . . . . . . . . . . . . . . . 79
Light On-Off . . . . . . . . . . . . . . . . . . 130
On-Off Light . . . . . . . . . . . . . . . . . . 130
On-Off Switch . . . . . . . . . . . . . . . . . . 73
Passenger Status Indicator . . . 132
Readiness Light . . . . . . . . . . . . . . 130
Servicing Airbag-Equipped Vehicles . . . . . . . . . . . . . . . . . . . . . . . 79
System Check . . . . . . . . . . . . . . . . . . 66
Alarm Vehicle Security . . . . . . . . . . . . . . . . 38
All-Season Tires . . . . . . . . . . . . . . . . 384
All-Terrain Tires . . . . . . . . . . . . . . . . . 385
AM-FM Radio . . . . . . . . . . . . . . 184, 186
Antenna Fixed Mast . . . . . . . . . . . . . . . . . . . 190
Multi-band . . . . . . . . . . . . . . . . . . . . 190
Antilock Brake System (ABS) . . . 281 

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-9955992) - 2017 - crc - 5/3/16
484 Index
D
Damage Repair, Collision . . . . . . . 464
Danger, Warning, and Caution . . . . 3
Data CollectionInfotainment System . . . . . . . . . . 470
OnStar . . . . . . . . . . . . . . . . . . . . . . . 470
Data Recorders, Event . . . . . . . . . 469
Daytime Running Lamps (DRL) . . . . . . . . . . . . . . . . . . 169
Defensive Driving . . . . . . . . . . . . . . . 239
Delayed Locking . . . . . . . . . . . . . . . . . 35
Diagnostics
OnStar
®. . . . . . . . . . . . . . . . . . . . . . 475
Distracted Driving . . . . . . . . . . . . . . . 238
Dome Lamps . . . . . . . . . . . . . . . . . . . 173
Door
Ajar Light . . . . . . . . . . . . . . . . . . . . . 141
Ajar Messages . . . . . . . . . . . . . . . 146
Delayed Locking . . . . . . . . . . . . . . . . 35
Locks . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Power Locks . . . . . . . . . . . . . . . . . . . . 35
Drive Belt Routing, Engine . . . . . . 456
Driver Assistance Systems . . . . . 290
Driver Information Center (DIC) . . . . . . . . . . . . . . . . . . 141
Driving Assistance Systems . . . . . . . . . . 293 Driving (cont'd)
Characteristics and
Towing Tips . . . . . . . . . . . . . . . . . 304
Defensive . . . . . . . . . . . . . . . . . . . . . 239
Drunk . . . . . . . . . . . . . . . . . . . . . . . . . 239
For Better Fuel Economy . . . . . . . 26
Hill and Mountain Roads . . . . . . 247
If the Vehicle is Stuck . . . . . . . . . 249
Loss of Control . . . . . . . . . . . . . . . 241
Off-Road . . . . . . . . . . . . . . . . . . . . . 242
Off-Road Recovery . . . . . . . . . . . 241
Vehicle Load Limits . . . . . . . . . . . 250
Wet Roads . . . . . . . . . . . . . . . . . . . 246
Winter . . . . . . . . . . . . . . . . . . . . . . . . 248
Dual Automatic Climate Control System . . . . . . . . . . . . . . . . 231
E
E85 or FlexFuel . . . . . . . . . . . . . . . . 301
Electrical Equipment,Add-On . . . . . . . . . . . . . . . . . . . . . . . 334
Electrical System Engine Compartment FuseBlock . . . . . . . . . . . . . . . . . . . . . . . . 376
Fuses . . . . . . . . . . . . . . . . . . . . . . . . 376
Instrument Panel Fuse Block . . . . . . . . . . . . . . . . . . . 379, 381
Overload . . . . . . . . . . . . . . . . . . . . . 376 Emergency
OnStar
®. . . . . . . . . . . . . . . . . . . . . . 472
Engine Air Cleaner/Filter . . . . . . . . . . . . . 355
Check and Service EngineSoon Light . . . . . . . . . . . . . . . . . . 133
Compartment Overview . . . . . . . 343
Coolant . . . . . . . . . . . . . . . . . . . . . . . 357
Coolant Heater . . . . . . . . . . . . . . . 262
Coolant Temperature Gauge . . . . . . . . . . . . . . . . . . . . . . 127
Coolant Temperature Warning Light . . . . . . . . . . . . . . . 138
Cooling System . . . . . . . . . . . . . . . 356
Cooling System Messages . . . 146
Drive Belt Routing . . . . . . . . . . . . 456
Exhaust . . . . . . . . . . . . . . . . . . . . . . 266
Fan . . . . . . . . . . . . . . . . . . . . . . . . . . . 362
Oil Life System . . . . . . . . . . . . . . . 351
Oil Messages . . . . . . . . . . . . . . . . . 147
Oil Pressure Gauge . . . . . . . . . . 126
Oil Pressure Light . . . . . . . . . . . . 139
Overheated Protection Operating Mode . . . . . . . . . . . . . 362
Overheating . . . . . . . . . . . . . . . . . . 360
Power Messages . . . . . . . . . . . . . 147
Running While Parked . . . . . . . . 267
Starting . . . . . . . . . . . . . . . . . . . . . . . 260 

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-9955992) - 2017 - crc - 5/3/16
Index 485
Entry Lighting . . . . . . . . . . . . . . . . . . . 174
Equipment, Towing . . . . . . . . . . . . . 324
Event Data Recorders . . . . . . . . . . 469
Exit Lighting . . . . . . . . . . . . . . . . . . . . 174
Extender, Safety Belt . . . . . . . . . . . . 65
Exterior Lamp Controls . . . . . . . . . 166
Exterior Lamps Off Reminder . . . 168
F
FanEngine . . . . . . . . . . . . . . . . . . . . . . . . 362
Fast Idle System . . . . . . . . . . . . . . . . 261
Features
Memory . . . . . . . . . . . . . . . . . . . . . . . . . 11
Filter, Engine Air Cleaner . . . . . . . . . . . 355
Fixed Mast Antenna . . . . . . . . . . . . 190
Flash-to-Pass . . . . . . . . . . . . . . . . . . . 169
Flashers, Hazard Warning . . . . . . 170
Flat Tire . . . . . . . . . . . . . . . . . . . . . . . . 406 Changing . . . . . . . . . . . . . . . . . . . . . 408
FlexFuel E85 . . . . . . . . . . . . . . . . . . . . . . . . . . . 301
Floor Console Storage . . . . . . . . . . 110
Floor Mats . . . . . . . . . . . . . . . . . . . . . . 435
Fluid AutomaticTransmission . . . . . . . . . . . 352, 354
Brakes . . . . . . . . . . . . . . . . . . . . . . . . 365 Fluid (cont'd)
Four-Wheel Drive
Transfer Case . . . . . . . . . . . . . . . 274
Power Steering . . . . . . . . . . . . . . . 363
Washer . . . . . . . . . . . . . . . . . . . . . . . 363
Fog Lamps . . . . . . . . . . . . . . . . . . . . . 171
Folding Mirrors . . . . . . . . . . . . . . . . . . 43
Forward Automatic Braking . . . . . 295
Forward Collision Alert (FCA) System . . . . . . . . . . . . . . . . . 293
Four-Wheel Drive . . . . . . . . . . 274, 367
Four-Wheel-Drive Light . . . . . . . . . 136
Frequency Statement Radio . . . . . . . . . . . . . . . . . . . . . . . . . 467
Front Axle . . . . . . . . . . . . . . . . . . . . . . 368
Front Fog Lamp Light . . . . . . . . . . . . . . . . . . . . . . . . . . 140
Front Seats
Heated and Ventilated . . . . . . . . . . 55
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . 300 Additives . . . . . . . . . . . . . . . . . . . . . 301
Economy Driving . . . . . . . . . . . . . . . 26
Filling a Portable FuelContainer . . . . . . . . . . . . . . . . . . . 304
Filling the Tank . . . . . . . . . . . . . . . 302
Foreign Countries . . . . . . . . . . . . 301
Gauge . . . . . . . . . . . . . . . . . . . . . . . . 125
Low Fuel Warning Light . . . . . . . 139 Fuel (cont'd)
Management, Active . . . . . . . . . . 266
Requirements, California . . . . . 301
System Messages . . . . . . . . . . . . 147
Full-Size Spare Tire . . . . . . . . . . . . 417
Fuses . . . . . . . . . . . . . . . . . . . . . . . . . . 376 Engine Compartment FuseBlock . . . . . . . . . . . . . . . . . . . . . . . . 376
Instrument Panel Fuse
Block . . . . . . . . . . . . . . . . . . . 379, 381
G
Garage Door Opener . . . . . . . . . . . 162Programming . . . . . . . . . . . . . . . . . 162
Gauges Engine CoolantTemperature . . . . . . . . . . . . . . . . 127
Engine Oil Pressure . . . . . . . . . . 126
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . 125
Odometer . . . . . . . . . . . . . . . . . . . . . 125
Speedometer . . . . . . . . . . . . . . . . . 125
Tachometer . . . . . . . . . . . . . . . . . . . 125
Transmission Temperature . . . . 128
Trip Odometer . . . . . . . . . . . . . . . . 125
Voltmeter . . . . . . . . . . . . . . . . . . . . . 128
Warning Lights and Indicators . . . . . . . . . . . . . . . . . . . 120
General Information
Service and Maintenance . . . . . 437