2018 GMC SIERRA DENALI check oil

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-11349177) - 2018 - CRC - 10/17/17
452 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)
@ @ @ @ @ @Inspect evaporative control system. (2)
@ @ @Replace engine air cleaner filter. (3)
@ @ @Replace spark plugs. Inspect spark plug wires.
@Change automatic transmission fluid and filter.
@ @ @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 — 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.

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-11349177) - 2018 - CRC - 10/17/17
Service and Maintenance 453(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
0 359 .
(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 0 368 .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 ” in Exterior Care
0 435 .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.

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-11349177) - 2018 - CRC - 10/17/17
454 Service and Maintenance 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 0 456 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.
Lamps
Properly working headlamps,
taillamps, and brake lamps are
important to see and be seen on
the road.
.
Signs that the headlamps need
attention include dimming, failure
to light, cracking, or damage.
The brake lamps need to be
checked periodically to ensure
that they light when braking.
.
With a multi-point inspection,
your dealer can check the lamps
and note any concerns.

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-11349177) - 2018 - CRC - 10/17/17
OnStar 483OnStar Advisor. On some vehicles,
Wi-Fi can also be managed from the
Wi-Fi Hotspot menu.
MyGMC Mobile App (If Available)
Download the myGMC mobile app
to compatible Apple and Android
smartphones. GMC users can
access the following services from a
smartphone:
.
Remotely start/stop the vehicle,
if factory-equipped.
.
Lock/unlock doors, if equipped
with automatic locks.
.
Activate the horn and lamps.
.
Check the vehicle ’ s fuel level, oil
life, or tire pressure,
if factory-equipped with the Tire
Pressure Monitor System.
.
Send destinations to the vehicle.
.
Locate the vehicle on a map
(U.S. market only).
.
Turn the vehicle's Wi-Fi hotspot
on/off, manage settings, and
monitor data consumption,
if equipped. .
Locate a dealer and schedule
service.
.
Request roadside assistance.
.
Set a parking reminder with pin
drop, take a photo, make a note,
and set a timer.
.
Connect with GMC on social
media.
For myGMC mobile app information
and compatibility, see
www.my.gmc.com.
An active OnStar service,
compatible device, factory-installed
remote start, and power locks are
required. Data rates apply. See
onstar.com for details and system
limitations.
Remote Services Contact an OnStar Advisor to
unlock the doors or sound the horn
and flash the lamps. OnStar AtYourService OnStar Advisors can provide offers
from restaurants and retailers on
your route, help locate hotels,
or book a room. These services
vary by market.
OnStar Hands-Free Calling Make and receive calls with the
built-in wireless calling service,
which requires available minutes.
Functionality of the Voice Command
button may vary by vehicle and
region. For some vehicles, press
= to open the OnStar app on the
infotainment display, then select
Hands-Free calling. For other
vehicles press
= as follows.
Make a Call
1. Press
= . System responds:
“ OnStar ready. ”
2. Say “ Call. ” System responds:
“ Call. Please say the name or
number to call. ”

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-11349177) - 2018 - CRC - 10/17/17
494 Index D Damage Repair, Collision . . . . . . . 472
Danger, Warning, and Caution . . . . 3
Data Collection
Infotainment System . . . . . . . . . . 478
OnStar . . . . . . . . . . . . . . . . . . . . . . . 478
Data Recorders, Event . . . . . . . . . 477
Daytime Running
Lamps (DRL) . . . . . . . . . . . . . . . . . . 179
Defensive Driving . . . . . . . . . . . . . . . 236
Diagnostics
OnStar . . . . . . . . . . . . . . . . . . . . . . . 484
Distracted Driving . . . . . . . . . . . . . . . 235
Dome Lamps . . . . . . . . . . . . . . . . . . . 183
Door
Ajar Light . . . . . . . . . . . . . . . . . . . . . 158
Locks . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Power Locks . . . . . . . . . . . . . . . . . . . . 41
Drive Belt Routing, Engine . . . . . . 464
Driver Assistance Systems . . . . . 288
Driver Information
Center (DIC) . . . . . . . . . . . . . 158, 160
Driving
Assistance Systems . . . . . . . . . . 292
Characteristics and
Towing Tips . . . . . . . . . . . . . . . . . 303
Defensive . . . . . . . . . . . . . . . . . . . . . 236
Drunk . . . . . . . . . . . . . . . . . . . . . . . . . 236 Driving (cont'd)
For Better Fuel Economy . . . . . . . 33
Hill and Mountain Roads . . . . . . 245
If the Vehicle is Stuck . . . . . . . . . 247
Loss of Control . . . . . . . . . . . . . . . 238
Off-Road . . . . . . . . . . . . . . . . . . . . . 239
Off-Road Recovery . . . . . . . . . . . 238
Vehicle Load Limits . . . . . . . . . . . 248
Wet Roads . . . . . . . . . . . . . . . . . . . 244
Winter . . . . . . . . . . . . . . . . . . . . . . . . 245
Dual Automatic Climate
Control System . . . . . . . . . . . . . . . . 228
E E85 or FlexFuel . . . . . . . . . . . . . . . . 300
Electrical Equipment,
Add-On . . . . . . . . . . . . . . . . . . . . . . . 336
Electrical System
Engine Compartment Fuse
Block . . . . . . . . . . . . . . . . . . . . . . . . 381
Fuses and Circuit Breakers . . . 381
Instrument Panel Fuse
Block . . . . . . . . . . . . . . . . . . . 385, 386
Overload . . . . . . . . . . . . . . . . . . . . . 380
Emergency
OnStar . . . . . . . . . . . . . . . . . . . . . . . 480
Engine
Air Cleaner/Filter . . . . . . . . . . . . . 358 Engine (cont'd)
Check Light (Malfunction
Indicator) . . . . . . . . . . . . . . . . . . . . 150
Compartment Overview . . . . . . . 345
Coolant Heater . . . . . . . . . . . . . . . 260
Coolant Temperature
Gauge . . . . . . . . . . . . . . . . . . . . . . 144
Coolant Temperature
Warning Light . . . . . . . . . . . . . . . 155
Cooling System . . . . . . . . . . . . . . . 359
Drive Belt Routing . . . . . . . . . . . . 464
Exhaust . . . . . . . . . . . . . . . . . . . . . . 264
Fan . . . . . . . . . . . . . . . . . . . . . . . . . . . 365
Oil Life System . . . . . . . . . . . . . . . 353
Oil Pressure Gauge . . . . . . . . . . 143
Oil Pressure Light . . . . . . . . . . . . 156
Overheated Protection
Operating Mode . . . . . . . . . . . . . 364
Overheating . . . . . . . . . . . . . . . . . . 363
Power Messages . . . . . . . . . . . . . 164
Running While Parked . . . . . . . . 265
Starting . . . . . . . . . . . . . . . . . . . . . . . 258
Entry Lighting . . . . . . . . . . . . . . . . . . . 184
Equipment, Towing . . . . . . . . . . . . . 325
Event Data Recorders . . . . . . . . . . 477
Exit Lighting . . . . . . . . . . . . . . . . . . . . 184
Extender, Seat Belt . . . . . . . . . . . . . . 75
Exterior Lamp Controls . . . . . . . . . 176

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-11349177) - 2018 - CRC - 10/17/17
Index 497Lamps (cont'd)
Exterior Controls . . . . . . . . . . . . . . 176
Exterior Lamps Off
Reminder . . . . . . . . . . . . . . . . . . . 178
Exterior Lighting Battery
Saver . . . . . . . . . . . . . . . . . . . . . . . 185
Malfunction Indicator
(Check Engine) . . . . . . . . . . . . . 150
On Reminder . . . . . . . . . . . . . . . . . 157
Reading . . . . . . . . . . . . . . . . . . . . . . 183
Lane Departure
Warning (LDW) . . . . . . . . . . . . . . . . 295
Lane Departure Warning
Light . . . . . . . . . . . . . . . . . . . . . . . . . . 153
Lane Keep Assist (LKA) . . . . . . . . 297
Lane Keep Assist Light . . . . . . . . . 154
Lap Belt . . . . . . . . . . . . . . . . . . . . . . . . . 75
Lap-Shoulder Belt . . . . . . . . . . . . . . . 71
LATCH System
Replacing Parts after a
Crash . . . . . . . . . . . . . . . . . . . . . . . . 111
LATCH, Lower Anchors and
Tethers for Children . . . . . . . . . . . . 99
LED Lighting . . . . . . . . . . . . . . . . . . . . 378
Lighting
Entry . . . . . . . . . . . . . . . . . . . . . . . . . 184
Exit . . . . . . . . . . . . . . . . . . . . . . . . . . . 184
Illumination Control . . . . . . . . . . . 182 Lighting (cont'd)
LED . . . . . . . . . . . . . . . . . . . . . . . . . . 378
Lights
Airbag On-Off . . . . . . . . . . . . . . . . . 147
Airbag Readiness . . . . . . . . . . . . . 147
Antilock Brake System
(ABS) Warning . . . . . . . . . . . . . . 152
Brake System Warning . . . . . . . 152
Charging System . . . . . . . . . . . . . 149
Check Engine (Malfunction
Indicator) . . . . . . . . . . . . . . . . . . . . 150
Cruise Control . . . . . . . . . . . . . . . . 158
Door Ajar . . . . . . . . . . . . . . . . . . . . . 158
Engine Coolant
Temperature Warning . . . . . . . 155
Engine Oil Pressure . . . . . . . . . . 156
Flash-to-Pass . . . . . . . . . . . . . . . . . 179
Four-Wheel-Drive . . . . . . . . . . . . . 153
Front Fog Lamp . . . . . . . . . . . . . . 157
High-Beam On . . . . . . . . . . . . . . . . 157
High/Low Beam Changer . . . . . 179
Hill Descent Control . . . . . . . . . . 153
Lane Departure Warning . . . . . . 153
Lane Keep Assist . . . . . . . . . . . . . 154
Low Fuel Warning . . . . . . . . . . . . 156
Seat Belt Reminders . . . . . . . . . . 146
Security . . . . . . . . . . . . . . . . . . . . . . 157
StabiliTrak OFF . . . . . . . . . . . . . . . 154 Lights (cont'd)
Tire Pressure . . . . . . . . . . . . . . . . . 156
Tow/Haul Mode . . . . . . . . . . . . . . . 153
Traction Control System
(TCS)/StabiliTrak . . . . . . . . . . . . 155
Traction Off . . . . . . . . . . . . . . . . . . . 154
Locking Rear Axle . . . . . . . . . . . . . . 285
Locks
Automatic Door . . . . . . . . . . . . . . . . . 41
Door . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Lockout Protection . . . . . . . . . . . . . . 42
Power Door . . . . . . . . . . . . . . . . . . . . . 41
Safety . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Loss of Control . . . . . . . . . . . . . . . . . 238
Low Fuel Warning Light . . . . . . . . . 156
Low-Profile Tires . . . . . . . . . . . . . . . . 390
Lower Anchors and Tethers
for Children (LATCH
System) . . . . . . . . . . . . . . . . . . . . . . . . 99
Lumbar Adjustment . . . . . . . . . . . . . . 60
Front Seats . . . . . . . . . . . . . . . . . . . . . 60
M Maintenance
Records . . . . . . . . . . . . . . . . . . . . . . 459
Maintenance and Care
Additional . . . . . . . . . . . . . . . . . . . . . 453
Maintenance Schedule . . . . . . . . . 448

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-11349177) - 2018 - CRC - 10/17/17
498 Index Maintenance Schedule (cont'd)
Recommended Fluids and
Lubricants . . . . . . . . . . . . . . . . . . . 456
Transfer Case . . . . . . . . . . . . . . . . 272
Malfunction Indicator Lamp . . . . . 150
Manual Mirrors . . . . . . . . . . . . . . . . . . 47
Manual Mode . . . . . . . . . . . . . . . . . . . 268
Manual Windows . . . . . . . . . . . . . . . . 52
Media
Avoiding Untrusted Devices . . 195
Memory Features . . . . . . . . . . . . . . . . 13
Memory Seats . . . . . . . . . . . . . . . . . . . 62
Messages
Engine Power . . . . . . . . . . . . . . . . 164
Vehicle . . . . . . . . . . . . . . . . . . . . . . . 164
Vehicle Speed . . . . . . . . . . . . . . . . 164
Mirrors
Automatic Dimming . . . . . . . . . . . . . 50
Automatic Dimming
Rearview . . . . . . . . . . . . . . . . . . . . . . 52
Blind Spot . . . . . . . . . . . . . . . . . . . . . . 50
Convex . . . . . . . . . . . . . . . . . . . . . . . . . 47
Folding . . . . . . . . . . . . . . . . . . . . . . . . . 49
Heated . . . . . . . . . . . . . . . . . . . . . . . . . 50
Manual . . . . . . . . . . . . . . . . . . . . . . . . . 47
Manual Rearview . . . . . . . . . . . . . . . 52
Power . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Tilt in Reverse . . . . . . . . . . . . . . . . . . 51 Mirrors (cont'd)
Trailer Tow . . . . . . . . . . . . . . . . . . . . . . 48
Mirrors, Interior Rearview . . . . . . . . 51
Monitor System, Tire
Pressure . . . . . . . . . . . . . . . . . . . . . . 399
Multi-band Antenna . . . . . . . . . . . . . 194
N Navigation
OnStar . . . . . . . . . . . . . . . . . . . . . . . 481
New Vehicle Break-In . . . . . . . . . . . 255
Noise Control System . . . . . . . . . . 373
O Odometer . . . . . . . . . . . . . . . . . . . . . . . 142
Trip . . . . . . . . . . . . . . . . . . . . . . . . . . . 142
Off-Road . . . . . . . . . . . . . . . . . . . . . . . 239
Driving . . . . . . . . . . . . . . . . . . . . . . . . 239
Recovery . . . . . . . . . . . . . . . . . . . . . 238
Oil
Engine . . . . . . . . . . . . . . . . . . . . . . . . 350
Engine Oil Life System . . . . . . . 353
Engine Oil Pressure Gauge . . . 143
Pressure Light . . . . . . . . . . . . . . . . 156
Older Children, Restraints . . . . . . . 92
Online Owner Center . . . . . . . . . . . 468
OnStar . . . . . . . . . . . . . . . . . . . . . . . . . 478
OnStar Additional
Information . . . . . . . . . . . . . . . . . . . . 485 OnStar Connections . . . . . . . . . . . . 482
OnStar Diagnostics . . . . . . . . . . . . . 484
OnStar Emergency . . . . . . . . . . . . . 480
OnStar Navigation . . . . . . . . . . . . . . 481
OnStar Overview . . . . . . . . . . . . . . . 479
OnStar Security . . . . . . . . . . . . . . . . 481
Operating Mode
Overheated Engine
Protection . . . . . . . . . . . . . . . . . . . 364
Operation
Fog Lamps . . . . . . . . . . . . . . . . . . . 181
Ordering
Service Publications . . . . . . . . . . 474
Outlets
Power . . . . . . . . . . . . . . . . . . . . . . . . 133
Overheated Engine
Protection Operating Mode . . . . 364
Overheating, Engine . . . . . . . . . . . . 363
Overview . . . . . . . . . . . . . . . . . . . . . . . 188
P Park
Shifting Into . . . . . . . . . . . . . . . . . . . 262
Shifting Out of . . . . . . . . . . . . . . . . 263
Parking
Brake . . . . . . . . . . . . . . . . . . . . . . . . . 281
Brake and P (Park)
Mechanism Check . . . . . . . . . . 375