
GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-1500-11698638) - 2019 - crc - 5/15/18
Service and Maintenance 419Footnotes — 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) Or every four years, whichever
comes first. If driving in dusty
conditions, inspect the filter at each
oil change or more often as needed.
(3) Visually check all fuel and vapor
lines and hoses for proper
attachment, connection, routing, and
condition.
(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 fluid. Contaminated
fluid will decrease the life of the
transfer case and/or drive axles and
should be replaced.
(5) Or every five years, whichever
comes first. See Cooling System
0 327 .
(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 0 336 .
(8) Or every 12 months, whichever
comes first. See Wiper Blade
Replacement 0 344 .

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-1500-11698638) - 2019 - crc - 5/15/18
420 Service and Maintenance Maintenance Schedule
Additional Required
Services - Severe
12 000 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 miRotate 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)
@ @ @ @ @ @Replace engine air cleaner filter. (2)
@ @ @Inspect evaporative control system. (3)
@ @ @Replace spark plugs. Inspect spark plug wires.
(Except 2.7L L4 Turbo Engine)
@Replace spark plugs. Inspect spark plug wires.
(2.7L L4 Turbo Engine Only)
@ @Change automatic transmission fluid and filter.
@ @ @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)
Replace windshield wiper blades. (8)
@ @ @
@ @ @
@ @ @ @Replace hood and/or body lift support gas struts.
@ @

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-1500-11698638) - 2019 - crc - 5/15/18
Service and Maintenance 421Footnotes — Maintenance
Schedule Additional Required
Services - Severe
(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) Or every four years, whichever
comes first. If driving in dusty
conditions, inspect the filter at each
oil change or more often as needed.
(3) Visually check all fuel and vapor
lines and hoses for proper
attachment, connection, routing, and
condition.
(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 fluid. Contaminated
fluid will decrease the life of the
transfer case and/or drive axles and
should be replaced.
(5) Or every five years, whichever
comes first. See Cooling System
0 327 .
(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 0 336 .
(8) Or every 12 months, whichever
comes first. See Wiper Blade
Replacement 0 344 .Special Application
Services .
Severe Commercial Use
Vehicles Only: Lubricate chassis
components every oil change.
.
Have underbody flushing service
performed. See "Underbody
Maintenance" in Exterior Care
0 403 .

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-1500-11698638) - 2019 - crc - 5/15/18
422 Service and Maintenance
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. .
To avoid break-down or failure to
start the vehicle, maintain a
battery with full cranking power.
.
Trained dealer technicians have
the diagnostic equipment to test
the battery and ensure that the
connections and cables are
corrosion-free.
Belts
.
Belts may need replacing if they
squeak or show signs of
cracking or splitting.
.
Trained dealer technicians have
access to tools and equipment
to inspect the belts and
recommend adjustment or
replacement when necessary.
Brakes
Brakes stop the vehicle and are
crucial to safe driving.
.
Signs of brake wear may include
chirping, grinding, or squealing
noises, or difficulty stopping. .
Trained dealer technicians have
access to tools and equipment
to inspect the brakes and
recommend quality parts
engineered for the vehicle.
Fluids
Proper fluid levels and approved
fluids protect the vehicle ’ s systems
and components. See
Recommended Fluids and
Lubricants 0 425 for GM approved
fluids.
.
Engine oil and windshield
washer fluid levels should be
checked at every fuel fill.
.
Instrument cluster lights may
come on to indicate that fluids
may be low and need to be
filled.
Hoses
Hoses transport fluids and should
be regularly inspected to ensure
that there are no cracks or leaks.
With a multi-point inspection, your
dealer can inspect the hoses and
advise if replacement is needed.

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-1500-11698638) - 2019 - crc - 5/15/18
426 Service and Maintenance Usage Fluid/Lubricant
Front Axle (Four-Wheel Drive) and
Rear Axle See your dealer.
Hydraulic Brake System DOT 4 Hydraulic Brake Fluid (GM Part No. 19299570, in
Canada 19299571).
Key Lock Cylinders, Hood Hinges,
Body Door Hinge Pins, Tailgate
Hinge and Linkage, Fuel Door Hinge,
Tailgate Handle Pivot Points, Hinges,
Latch Bolt, and Linkage Multi-Purpose Lubricant, Superlube (GM Part No. 12346241, in
Canada 10953474).
Transfer Case (Four-Wheel Drive) DEXRON-VI Automatic Transmission Fluid.
Weatherstrip Conditioning Weatherstrip Lubricant (GM Part No. 3634770, in Canada 10953518) or
equivalent.
Weatherstrip Squeaks Synthetic Grease with Teflon, Superlube (GM Part No. 12371287, in
Canada 10953437).
Windshield Washer Automotive windshield washer fluid that meets regional freeze protection
requirements.

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/-
Mexico-1500-11698638) - 2019 - crc - 5/16/18
460 Index Assistance Systems for
Driving . . . . . . . . . . . . . . . . . . . . . . . . 260
Assistance Systems for
Parking and Backing . . . . . . . . . . 254
Auto Stop
Stop/Start System . . . . . . . . . . . . 222
Automatic
Dimming Mirrors . . . . . . . . . . . . . . . . 58
Door Locks . . . . . . . . . . . . . . . . . . . . . 46
Forward Braking . . . . . . . . . . . . . . 263
Headlamp System . . . . . . . . . . . . 179
Transmission . . . . . . . . . . . . . . . . . 229
Transmission Fluid . . . . . . . . . . . 325
Automatic Transmission
Manual Mode . . . . . . . . . . . . . . . . . 232
Axle, Front . . . . . . . . . . . . . . . . . . . . . . 340
Axle, Rear . . . . . . . . . . . . . . . . . . . . . . 341
B Battery
Exterior Lighting Battery
Saver . . . . . . . . . . . . . . . . . . . . . . . 185
Load Management . . . . . . . . . . . . 185
Power Protection . . . . . . . . . . . . . 185
Battery - North America . . . . 337, 395
Blade Replacement, Wiper . . . . . 344
Blind Spot Mirrors . . . . . . . . . . . . . . . 58 Brake
Parking, Electric . . . . . . . . . . . . . . 241
System Warning Light . . . . . . . . 151
Brake Pad Life System . . . . . . . . . 335
Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . 335
Antilock . . . . . . . . . . . . . . . . . . . . . . . 240
Assist . . . . . . . . . . . . . . . . . . . . . . . . . 242
Fluid . . . . . . . . . . . . . . . . . . . . . . . . . . 336
Pad Life System . . . . . . . . . . . . . . 335
Braking . . . . . . . . . . . . . . . . . . . . . . . . . 198
Automatic Forward . . . . . . . . . . . 263
Braking System
Front Pedestrian (FPB) . . . . . . . 264
Break-In, New Vehicle . . . . . . . . . . 216
Bulb Replacement
Center High-Mounted
Stoplamp (CHMSL) and
Cargo Lamp . . . . . . . . . . . . . . . . . 348
Halogen Bulbs . . . . . . . . . . . . . . . . 346
Headlamp Aiming . . . . . . . . . . . . . 346
Headlamps . . . . . . . . . . . . . . . . . . . 346
Headlamps, Front Turn
Signal, Sidemarker, and
Parking Lamps . . . . . . . . . . . . . . 347
License Plate Lamps . . . . . . . . . 349
Taillamps, Turn Signal,
Stoplamps, and Back-up
Lamps . . . . . . . . . . . . . . . . . . . . . . 347 Buying New Tires . . . . . . . . . . . . . . . 378
C Calibration . . . . . . . . . . . . . . . . . . . . . . 132
California
Perchlorate Materials
Requirements . . . . . . . . . . . . . . . 313
California
Proposition
65 Warning . . . . . . . . . .313, 337, 395,
Back Cover
Canadian Vehicle Owners . . . . . . . . 2
Capacities and
Specifications . . . . . . . . . . . . . . . . . 430
Carbon Monoxide
Engine Exhaust . . . . . . . . . . . . . . . 228
Tailgate . . . . . . . . . . . . . . . . . . . . . . . . . 47
Winter Driving . . . . . . . . . . . . . . . . 206
Cargo
Tie-Downs . . . . . . . . . . . . . . . . . . . . 127
Caution, Danger, and Warning . . . . 2
Center Console Storage . . . . . . . . 126
Center High-Mounted
Stoplamp (CHMSL) and
Cargo Lamp . . . . . . . . . . . . . . . . . . . 348
Center Seat . . . . . . . . . . . . . . . . . . . . . 70
Chains, Tire . . . . . . . . . . . . . . . . . . . . 382

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/-
Mexico-1500-11698638) - 2019 - crc - 5/16/18
Index 463F Fan
Engine . . . . . . . . . . . . . . . . . . . . . . . . 333
Features
Memory . . . . . . . . . . . . . . . . . . . . . . . . . 12
Filter,
Engine Air Cleaner . . . . . . . . . . . 326
Flash-to-Pass . . . . . . . . . . . . . . . . . . . 179
Flashers, Hazard Warning . . . . . . 180
Flat Tire . . . . . . . . . . . . . . . . . . . . . . . . 383
Changing . . . . . . . . . . . . . . . . . . . . . 385
FlexFuel
E85 . . . . . . . . . . . . . . . . . . . . . . . . . . . 272
Floor Console Storage . . . . . . . . . . 127
Floor Mats . . . . . . . . . . . . . . . . . . . . . . 411
Fluid
Automatic Transmission . . . . . . 325
Brakes . . . . . . . . . . . . . . . . . . . . . . . . 336
Four-Wheel Drive
Transfer Case . . . . . . . . . . . . . . . 235
Washer . . . . . . . . . . . . . . . . . . . . . . . 334
Fog Lamps . . . . . . . . . . . . . . . . . . . . . 181
Folding Mirrors . . . . . . . . . . . . . . . . . . 57
Forward Automatic Braking . . . . . 263
Forward Collision Alert
(FCA) System . . . . . . . . . . . . . . . . . 260
Four-Wheel Drive . . . . . . . . . . 235, 340
Four-Wheel-Drive Light . . . . . . . . . 153 Frequency Statement
Radio . . . . . . . . . . . . . . . . . . . . . . . . . 443
Front Axle . . . . . . . . . . . . . . . . . . . . . . 340
Front Fog Lamp
Light . . . . . . . . . . . . . . . . . . . . . . . . . . 158
Front Pedestrian Braking
(FPB) System . . . . . . . . . . . . . . . . . 264
Front Seats
Adjustment . . . . . . . . . . . . . . . . . . . . . 69
Heated and Ventilated . . . . . . . . . . 75
Fuel
Additives . . . . . . . . . . . . . . . . . . . . . 272
Economy Driving . . . . . . . . . . . . . . . 29
Filling a Portable Fuel
Container . . . . . . . . . . . . . . . . . . . 275
Filling the Tank . . . . . . . . . . . . . . . 273
Foreign Countries . . . . . . . . . . . . 272
Gauge . . . . . . . . . . . . . . . . . . . . . . . . 143
Low Fuel Warning Light . . . . . . . 157
Management, Active . . . . . . . . . . 227
Prohibited Fuels . . . . . . . . . . . . . . 272
Recommended . . . . . . . . . . . . . . . 271
Top Tier . . . . . . . . . . . . . . . . . . . . . . 271
Full-Size Spare Tire . . . . . . . . . . . . 394
Fuses
Engine Compartment Fuse
Block . . . . . . . . . . . . . . . . . . . . . . . . 350
Fuses and Circuit Breakers . . . 350 Fuses (cont'd)
Instrument Panel Fuse
Block . . . . . . . . . . . . . . . . . . . 354, 356
G Garage Door Opener . . . . . . . . . . . 172
Programming . . . . . . . . . . . . . . . . . 172
Gas Strut(s) . . . . . . . . . . . . . . . . . . . . 345
Gauges
Engine Coolant
Temperature . . . . . . . . . . . . . . . . 145
Engine Oil Pressure . . . . . . . . . . 144
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . 143
Odometer . . . . . . . . . . . . . . . . . . . . . 142
Speedometer . . . . . . . . . . . . . . . . . 142
Tachometer . . . . . . . . . . . . . . . . . . . 143
Trip Odometer . . . . . . . . . . . . . . . . 142
Voltmeter . . . . . . . . . . . . . . . . . . . . . 146
Warning Lights and
Indicators . . . . . . . . . . . . . . . . . . . 137
General Information
Service and Maintenance . . . . . 413
Towing . . . . . . . . . . . . . . . . . . . . . . . . 276
Vehicle Care . . . . . . . . . . . . . . . . . . 312
Glove Box . . . . . . . . . . . . . . . . . . . . . . 125
GM Mobility Reimbursement
Program . . . . . . . . . . . . . . . . . . . . . . . 437

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/-
Mexico-1500-11698638) - 2019 - crc - 5/16/18
Index 465Lane Keep Assist Light . . . . . . . . . 153
Lap-Shoulder Belt . . . . . . . . . . . . . . . 82
LATCH System
Replacing Parts after a
Crash . . . . . . . . . . . . . . . . . . . . . . . .117
LATCH, Lower Anchors and
Tethers for Children . . . . . . . . . . . 106
LED Lighting . . . . . . . . . . . . . . . . . . . . 347
Lighting
Entry . . . . . . . . . . . . . . . . . . . . . . . . . 184
Exit . . . . . . . . . . . . . . . . . . . . . . . . . . . 184
Illumination Control . . . . . . . . . . . 183
LED . . . . . . . . . . . . . . . . . . . . . . . . . . 347
Task . . . . . . . . . . . . . . . . . . . . . . . . . . 182
Lights
Airbag Readiness . . . . . . . . . . . . . 147
Antilock Brake System
(ABS) Warning . . . . . . . . . . . . . . 152
Brake System Warning . . . . . . . 151
Charging System . . . . . . . . . . . . . 148
Check Engine (Malfunction
Indicator) . . . . . . . . . . . . . . . . . . . . 149
Cruise Control . . . . . . . . . . . . . . . . 158
Door Ajar . . . . . . . . . . . . . . . . . . . . . 158
Driver Mode Control . . . . . . . . . . 156
Electric Parking Brake . . . . . . . . 152
Electronic Stability Control
(ESC), Off . . . . . . . . . . . . . . . . . . . 155 Lights (cont'd)
Engine Coolant
Temperature Warning . . . . . . . 155
Engine Oil Pressure . . . . . . . . . . 157
Flash-to-Pass . . . . . . . . . . . . . . . . . 179
Four-Wheel-Drive . . . . . . . . . . . . . 153
Front Fog Lamp . . . . . . . . . . . . . . 158
High-Beam On . . . . . . . . . . . . . . . . 157
High/Low Beam Changer . . . . . 178
Hill Descent Control . . . . . . . . . . 153
Lane Keep Assist . . . . . . . . . . . . . 153
Low Fuel Warning . . . . . . . . . . . . 157
Seat Belt Reminders . . . . . . . . . . 146
Security . . . . . . . . . . . . . . . . . . . . . . 157
Service Electric Parking
Brake . . . . . . . . . . . . . . . . . . . . . . . 152
Tire Pressure . . . . . . . . . . . . . . . . . 156
Tow/Haul Mode . . . . . . . . . . . . . . . 153
Traction Off . . . . . . . . . . . . . . . . . . . 154
Limited-Slip Differential . . . . . . . . . 250
Locking Rear Axle . . . . . . . . . . . . . . 250
Locks
Automatic Door . . . . . . . . . . . . . . . . . 46
Delayed Locking . . . . . . . . . . . . . . . . 45
Door . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Lockout Protection . . . . . . . . . . . . . . 46
Power Door . . . . . . . . . . . . . . . . . . . . . 45
Safety . . . . . . . . . . . . . . . . . . . . . . . . . . 46 Loss of Control . . . . . . . . . . . . . . . . . 200
Low Fuel Warning Light . . . . . . . . . 157
Low-Profile Tires . . . . . . . . . . . . . . . . 360
Lower Anchors and Tethers
for Children (LATCH
System) . . . . . . . . . . . . . . . . . . . . . . . 106
Lumbar Adjustment . . . . . . . . . . . . . . 71
Front Seats . . . . . . . . . . . . . . . . . . . . . 71
M Maintenance
Records . . . . . . . . . . . . . . . . . . . . . . 428
Maintenance and Care
Additional . . . . . . . . . . . . . . . . . . . . . 422
Maintenance Schedule . . . . . . . . . 415
Recommended Fluids and
Lubricants . . . . . . . . . . . . . . . . . . . 425
Transfer Case . . . . . . . . . . . . . . . . 235
Malfunction Indicator Lamp . . . . . 149
Manual Mirrors . . . . . . . . . . . . . . . . . . 56
Manual Mode . . . . . . . . . . . . . . . . . . . 232
Manual Windows . . . . . . . . . . . . . . . . 63
Memory Features . . . . . . . . . . . . . . . . 12
Memory Seats . . . . . . . . . . . . . . . . . . . 73
Messages
Engine Power . . . . . . . . . . . . . . . . 167
Vehicle . . . . . . . . . . . . . . . . . . . . . . . 166
Vehicle Speed . . . . . . . . . . . . . . . . 167