2018 GMC YUKON fuel cap

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-11349262) - 2018 - CRC - 11/3/17
Technical Data 389
Vehicle Data
Capacities and Specifications
The following approximate capacities are given in metric and English conversions. SeeRecommended Fluids and
Lubricants 0384 for more information.
Application Capacities
Metric English
Air Conditioning Refrigerant For the air conditioning system refrigerant type and charge amount, see the refrigerant label under thehood. See your dealer for more information.
Cooling System 5.3L V8; 6.2L V8 16.8 L 17.8 qt
Engine Oil with Filter 5.3L V8; 6.2L V8 7.6 L 8.0 qt
Fuel Tank
Short Wheelbase 98.4 L 26.0 gal
Long Wheelbase 119.2 L 31.5 gal
Transfer Case Fluid 1.5 L 1.6 qt
Wheel Nut Torque 190 Y140 lb ft
All capacities are approximate. When adding, be sure to fill to the approximate level, as recommended in this
manual. Recheck fluid level after filling.

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-11349262) - 2018 - CRC - 11/3/17
OnStar 411
3. Say the entire number withoutpausing, including a “1”and the
area code. System responds:
“OK, calling.”
Calling 911 Emergency
1. Press=. System responds:
“OnStar ready.”
2. Say “Call.”System responds:
“Call. Please say the name or
number to call.”
3. Say “911”without pausing.
System responds: “911.”
4. Say “Call.”System responds:
“OK, dialing 911.”
Retrieve My Number
1. Press=. System responds:
“OnStar ready.”
2. Say “My number.” System
responds: “Your OnStar
Hands-Free Calling number is,”
then says the number.
End a Call
Press=. System responds: “Call
ended.”
Verify Minutes and Expiration
Press=and say “Minutes” then
“Verify” to check how many minutes
remain and their expiration date.
Diagnostics
By monitoring and reporting on the
vehicle’s key systems, OnStar
Advanced Diagnostics provides a
way to keep up on maintenance.
Capabilities vary by model. See
www.onstar.com for details and
system limitations. Message and
data rates may apply.
Advanced Diagnostics requires an
active OnStar paid service plan,
e-mail address on file, and
enrollment in Advanced Diagnostics.
Includes:
. Diagnostic Alerts: Set
preferences to receive real-time
e-mails, texts, or monthly
reports of the vehicle’s health.
Or press
Qto have an Advisor
initiate a remote diagnostic
report. .
Proactive Alerts: Receive a
real-time e-mail or text message
regarding potential issues with
key vehicle components, such
as the battery, fuel system,
or starter system. Alerts for
potential issues appear on the
infotainment display. Proactive
Alerts are designed to help
predict specific types of issues
based on information collected
from the vehicle. Other factors
may affect vehicle performance.
Not all issues will deliver alerts.
In some cases, a dealer service
check may be required to
confirm the accuracy of the
alerts.
. Dealer Maintenance Notification:
Have the vehicle notify your
preferred dealer when it is time
for maintenance. Your dealer will
then contact you to set up an
appointment.
To begin, pressQto speak to an
Advisor, or see www.onstar.com.

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-11349262) - 2018 - CRC - 11/3/17
412 OnStar
OnStar Additional
Information
OnStar Smart Driver
OnStar Smart Driver provides
information about driving behavior to
help maximize overall vehicle
performance, reduce wear and tear,
and enhance fuel efficiency. An
Insurance Discounts Eligibility
feature is also offered within OnStar
Smart Driver. See www.onstar.com
for details regarding vehicle
eligibility and system limitations.
OnStar, General Motors, and their
affiliates are not insurance
providers. Obtain insurance only
from licensed insurance providers.
In-Vehicle Audio Messages
Audio messages may play important
information at the following times:
.Prior to vehicle purchase.
Press
Qto set up an account.
. With the OnStar Basic Plan,
every 60 days. .
After change in ownership and
at 90 days.
Transferring Service
PressQto request account transfer
eligibility information. The Advisor
can cancel or change account
information.
Selling/Transferring the
Vehicle
Call 1-888-4ONSTAR
(1-888-466-7827) immediately to
terminate your OnStar services if
the vehicle is disposed of, sold,
transferred, or if the lease ends.
Reactivation for Subsequent
Owners
PressQand follow the prompts to
speak to an Advisor as soon as
possible. The Advisor will update
vehicle records and explain OnStar
service options.
How OnStar Service Works
Automatic Crash Response,
Emergency Services, Crisis Assist,
Stolen Vehicle Assistance, Advanced Vehicle Diagnostics,
Remote Services, Roadside
Assistance, Turn-by-Turn
Navigation, and Hands-Free Calling
are available on most vehicles. Not
all OnStar services are available
everywhere or on all vehicles. For
more information, a full description
of OnStar services, system
limitations, and OnStar User Terms,
Privacy Statement, and Software
Terms:
.
Call 1-888-4ONSTAR
(1-888-466-7827).
. See www.onstar.com (U.S.).
. See www.onstar.ca (Canada).
. Call TTY 1-877-248-2080.
. Press
Qto speak with an
Advisor.
OnStar services cannot work unless
the vehicle is in a place where
OnStar has an agreement with a
wireless service provider for service
in that area. The wireless service
provider must also have coverage,
network capacity, reception, and
technology compatible with OnStar

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-11349262) - 2018 - CRC - 11/3/17
Index 419
Assistance Program,Roadside . . . . . . . . . . . . . . . . . . . . . . 396
Assistance Systems for Driving . . . . . . . . . . . . . . . . . . . . . . . . 250
Assistance Systems for Parking and Backing . . . . . . . . . . 248
Automatic
Dimming Mirrors . . . . . . . . . . . . . . . . 56
Door Locks . . . . . . . . . . . . . . . . . . . . . 44
Forward Braking . . . . . . . . . . . . . . 253
Headlamp System . . . . . . . . . . . . 177
Level Control . . . . . . . . . . . . . . . . . 237
Transmission . . . . . . . . . . . . . . . . . 220
Transmission Fluid . . . . . . 290, 293
Automatic Transmission Manual Mode . . . . . . . . . . . . . . . . . 223
Shift Lock Control Function
Check . . . . . . . . . . . . . . . . . . . . . . . 307
Axle, Front . . . . . . . . . . . . . . . . . . . . . . 304
Axle, Rear . . . . . . . . . . . . . . . . . . . . . . 305
B
Battery Exterior Lighting BatterySaver . . . . . . . . . . . . . . . . . . . . . . . 182
Load Management . . . . . . . . . . . . 181 Battery (cont'd)
Power Protection . . . . . . . . . . . . . 182
Battery - North America . . . . 303, 356
Blade Replacement, Wiper . . . . . 308
Blind Spot Mirrors . . . . . . . . . . . . . . . 56
Brake Pedal and AdjustableThrottle . . . . . . . . . . . . . . . . . . . . . . 209
System Warning Light . . . . . . . . 148
Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . 301 Antilock . . . . . . . . . . . . . . . . . . . . . . . 231
Assist . . . . . . . . . . . . . . . . . . . . . . . . . 233
Fluid . . . . . . . . . . . . . . . . . . . . . . . . . . 302
Parking . . . . . . . . . . . . . . . . . . . . . . . 232
Braking . . . . . . . . . . . . . . . . . . . . . . . . . 194 Automatic Forward . . . . . . . . . . . 253
Break-In, New Vehicle . . . . . . . . . . 209
Bulb Replacement Back-up Lamps . . . . . . . . . . . . . . . .311
Fog Lamps . . . . . . . . . . . . . . . . . . . .311
Headlamp Aiming . . . . . . . . . . . . . 310
Headlamps . . . . . . . . . . . . . . . . . . . .311
High Intensity Discharge(HID) Lighting . . . . . . . . . . . . . . . .311
License Plate Lamps . . . . . . . . . 312
Buying New Tires . . . . . . . . . . . . . . . 340
C
Calibration . . . . . . . . . . . . . . . . . . . . . . 129
California Fuel Requirements . . . . . . . . . . . 260
Perchlorate MaterialsRequirements . . . . . . . . . . . . . . . 282
California Proposition
65 Warning . . . . . . . . . .281, 303, 356, Back Cover
Canadian Vehicle Owners . . . . . . . . 2
Capacities and Specifications . . . . . . . . . . . . . . . . . 389
Carbon Monoxide
Engine Exhaust . . . . . . . . . . . . . . . 219
Liftgate . . . . . . . . . . . . . . . . . . . . . . . . . 45
Winter Driving . . . . . . . . . . . . . . . . 202
Cargo Tie-Downs . . . . . . . . . . . . . . . . . . . . 123
Caution, Danger, and Warning . . . . 3
Center Console Storage . . . . . . . . 122
Chains, Tire . . . . . . . . . . . . . . . . . . . . 344
Charging Wireless . . . . . . . . . . . . . . . . . . . . . . 132
Charging System Light . . . . . . . . . 145
Check Engine Light (MalfunctionIndicator) . . . . . . . . . . . . . . . . . . . . 146