2018 GMC YUKON XL fuel pressure

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-11349262) - 2018 - crc - 6/20/17
Service and Maintenance 371a 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.
See Engine Oil Life System 0 285 .
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 0 334 .
.
Check engine oil level and oil
life percentage. If needed,
change engine oil and filter, and
reset oil life system.
See Engine Oil 0 283 and
Engine Oil Life System 0 285 . .
Check engine coolant level. See
Cooling System 0 291 .
.
Check windshield washer fluid
level. See Washer Fluid 0 296 .
.
Visually inspect windshield wiper
blades for wear, cracking,
or contamination. See Exterior
Care 0 360 . Replace worn or
damaged wiper blades. See
Wiper Blade Replacement
0 303 .
.
Check tire inflation pressures.
See Tire Pressure 0 327 .
.
Inspect tire wear. See Tire
Inspection 0 333 .
.
Visually check for fluid leaks.
.
Inspect engine air cleaner filter.
See Engine Air Cleaner/Filter
0 290 .
.
Inspect brake system. See
Exterior Care 0 360 . .
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 0 360 . 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 0 83 .
.
Visually inspect fuel system for
damage or leaks.
.
Visually inspect exhaust system
and nearby heat shields for
loose or damaged parts.
.
Lubricate body components. See
Exterior Care 0 360 .
.
Check starter switch. See Starter
Switch Check 0 302 .

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-11349262) - 2018 - crc - 6/20/17
374 Service and Maintenance Footnotes — Maintenance
Schedule Additional Required
Services - Normal
(1) Or every two years, whichever
comes first. More frequent
passenger compartment air filter
replacement may be needed if
driving in areas with heavy traffic,
poor air quality, high dust levels,
or environmental allergens.
Passenger compartment air filter
replacement may also be needed if
there is reduced airflow, window
fogging, or odors. Your GM dealer
can help determine when to replace
the filter.
(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
0 291 .
(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 0 297 .

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-11349262) - 2018 - crc - 6/21/17
404 OnStar devices. Manage data usage by
turning Wi-Fi on or off on your
mobile device, using the myGMC
mobile app, or by contacting an
OnStar 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 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 Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-11349262) - 2018 - crc - 6/21/17
Index 415Driving (cont'd)
Defensive . . . . . . . . . . . . . . . . . . . . . 190
Drunk . . . . . . . . . . . . . . . . . . . . . . . . . 190
For Better Fuel Economy . . . . . . . 26
Hill and Mountain Roads . . . . . . 198
If the Vehicle is Stuck . . . . . . . . . 200
Loss of Control . . . . . . . . . . . . . . . 192
Off-Road . . . . . . . . . . . . . . . . . . . . . 192
Off-Road Recovery . . . . . . . . . . . 191
Vehicle Load Limits . . . . . . . . . . . 200
Wet Roads . . . . . . . . . . . . . . . . . . . 197
Winter . . . . . . . . . . . . . . . . . . . . . . . . 198
Dual Automatic Climate
Control System . . . . . . . . . . . . . . . . 180
E E85 or FlexFuel . . . . . . . . . . . . . . . . 256
Electrical Equipment,
Add-On . . . . . . . . . . . . . . . . . . . . . . . 274
Electrical System
Engine Compartment Fuse
Block . . . . . . . . . . . . . . . . . . . . . . . . 310
Fuses and Circuit Breakers . . . 309
Instrument Panel Fuse
Block . . . . . . . . . . . . . . . . . . . 314, 317
Overload . . . . . . . . . . . . . . . . . . . . . 309
Rear Compartment Fuse
Block . . . . . . . . . . . . . . . . . . . . . . . . 319 Emergency
OnStar . . . . . . . . . . . . . . . . . . . . . . . 401
Engine
Air Cleaner/Filter . . . . . . . . . . . . . 290
Check Light (Malfunction
Indicator) . . . . . . . . . . . . . . . . . . . . 143
Compartment Overview . . . . . . . 280
Coolant Temperature
Gauge . . . . . . . . . . . . . . . . . . . . . . 138
Coolant Temperature
Warning Light . . . . . . . . . . . . . . . 148
Cooling System . . . . . . . . . . . . . . . 291
Drive Belt Routing . . . . . . . . . . . . 385
Exhaust . . . . . . . . . . . . . . . . . . . . . . 215
Fan . . . . . . . . . . . . . . . . . . . . . . . . . . . 296
Heater . . . . . . . . . . . . . . . . . . . . . . . . 210
Oil Life System . . . . . . . . . . . . . . . 285
Oil Pressure Gauge . . . . . . . . . . 137
Oil Pressure Light . . . . . . . . . . . . 149
Overheating . . . . . . . . . . . . . . . . . . 294
Power Messages . . . . . . . . . . . . . 158
Running While Parked . . . . . . . . 215
Starting . . . . . . . . . . . . . . . . . . . . . . . 209
Entry Lighting . . . . . . . . . . . . . . . . . . . 177
Equipment, Towing . . . . . . . . . . . . . 267
Event Data Recorders . . . . . . . . . . 398
Exit Lighting . . . . . . . . . . . . . . . . . . . . 177
Extended Parking . . . . . . . . . . . . . . . 214 Extender, Seat Belt . . . . . . . . . . . . . . 83
Exterior Lamp Controls . . . . . . . . . 170
Exterior Lamps Off Reminder . . . 172
Exterior Lighting Battery
Saver . . . . . . . . . . . . . . . . . . . . . . . . . 178
F Fan
Engine . . . . . . . . . . . . . . . . . . . . . . . . 296
Features
Memory . . . . . . . . . . . . . . . . . . . . . . . . . 12
Filter,
Engine Air Cleaner . . . . . . . . . . . 290
Flash-to-Pass . . . . . . . . . . . . . . . . . . . 172
Flashers, Hazard Warning . . . . . . 174
Flat Tire . . . . . . . . . . . . . . . . . . . . . . . . 341
Changing . . . . . . . . . . . . . . . . . . . . . 342
FlexFuel
E85 . . . . . . . . . . . . . . . . . . . . . . . . . . . 256
Floor Mats . . . . . . . . . . . . . . . . . . . . . . 367
Fluid
Automatic
Transmission . . . . . . . . . . . 286, 289
Brakes . . . . . . . . . . . . . . . . . . . . . . . . 297
Four-Wheel Drive
Transfer Case . . . . . . . . . . . . . . . 222
Washer . . . . . . . . . . . . . . . . . . . . . . . 296
Fog Lamps . . . . . . . . . . . . . . . . . . . . . 175
Bulb Replacement . . . . . . . . . . . . 307

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-11349262) - 2018 - crc - 6/21/17
416 Index Folding Mirrors . . . . . . . . . . . . . . . . . . 53
Forward Automatic Braking . . . . . 248
Forward Collision Alert
(FCA) System . . . . . . . . . . . . . . . . . 246
Four-Wheel Drive . . . . . . . . . . 222, 299
Four-Wheel-Drive Light . . . . . . . . . 146
Frequency Statement
Radio . . . . . . . . . . . . . . . . . . . . . . . . . 396
Front Axle . . . . . . . . . . . . . . . . . . . . . . 300
Front Fog Lamp
Light . . . . . . . . . . . . . . . . . . . . . . . . . . 150
Front Seats
Heated and Ventilated . . . . . . . . . . 67
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . 254
Additives . . . . . . . . . . . . . . . . . . . . . 255
Economy Driving . . . . . . . . . . . . . . . 26
Filling a Portable Fuel
Container . . . . . . . . . . . . . . . . . . . 258
Filling the Tank . . . . . . . . . . . . . . . 256
Foreign Countries . . . . . . . . . . . . 255
Gauge . . . . . . . . . . . . . . . . . . . . . . . . 137
Low Fuel Warning Light . . . . . . . 149
Management, Active . . . . . . . . . . 214
Requirements, California . . . . . 255
Full-Size Spare Tire . . . . . . . . . . . . 350
Fuses
Engine Compartment Fuse
Block . . . . . . . . . . . . . . . . . . . . . . . . 310 Fuses (cont'd)
Fuses and Circuit Breakers . . . 309
Instrument Panel Fuse
Block . . . . . . . . . . . . . . . . . . . 314, 317
Rear Compartment Fuse
Block . . . . . . . . . . . . . . . . . . . . . . . . 319
G Garage Door Opener . . . . . . . . . . . 166
Programming . . . . . . . . . . . . . . . . . 166
Gas Strut(s) . . . . . . . . . . . . . . . . . . . . 305
Gauges
Engine Coolant
Temperature . . . . . . . . . . . . . . . . 138
Engine Oil Pressure . . . . . . . . . . 137
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . 137
Odometer . . . . . . . . . . . . . . . . . . . . . 136
Speedometer . . . . . . . . . . . . . . . . . 136
Tachometer . . . . . . . . . . . . . . . . . . . 136
Transmission Temperature . . . . 139
Trip Odometer . . . . . . . . . . . . . . . . 136
Voltmeter . . . . . . . . . . . . . . . . . . . . . 140
Warning Lights and
Indicators . . . . . . . . . . . . . . . . . . . 132
General Information
Service and Maintenance . . . . . 369
Towing . . . . . . . . . . . . . . . . . . . . . . . . 259
Vehicle Care . . . . . . . . . . . . . . . . . . 277
Glass Replacement . . . . . . . . . . . . . 304 Glove Box . . . . . . . . . . . . . . . . . . . . . . 118
GM Mobility Reimbursement
Program . . . . . . . . . . . . . . . . . . . . . . . 390
H Hazard Warning Flashers . . . . . . . 174
Head Restraints . . . . . . . . . . . . . . . . . 61
Head-up Display . . . . . . . . . . . . . . . . 154
Headlamps
Aiming . . . . . . . . . . . . . . . . . . . . . . . . 306
Automatic . . . . . . . . . . . . . . . . . . . . . 173
Bulb Replacement . . . . . . . . . . . . 306
Daytime Running
Lamps (DRL) . . . . . . . . . . . . . . . . 173
Flash-to-Pass . . . . . . . . . . . . . . . . . 172
High Intensity Discharge
(HID) Lighting . . . . . . . . . . . . . . . 306
High-Beam On Light . . . . . . . . . . 149
High/Low Beam Changer . . . . . 172
Lamps On Reminder . . . . . . . . . 150
Heated
Rear Seats . . . . . . . . . . . . . . . . . . . . . 69
Steering Wheel . . . . . . . . . . . . . . . 123
Heated and Ventilated Front
Seats . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Heated Mirrors . . . . . . . . . . . . . . . . . . . 54
Heater
Engine . . . . . . . . . . . . . . . . . . . . . . . . 210
Heating . . . . . . . . . . . . . . . . . . . . 180, 184

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-11349262) - 2018 - crc - 6/21/17
418 Index Lights (cont'd)
Engine Oil Pressure . . . . . . . . . . 149
Flash-to-Pass . . . . . . . . . . . . . . . . . 172
Four-Wheel-Drive . . . . . . . . . . . . . 146
Front Fog Lamp . . . . . . . . . . . . . . 150
High-Beam On . . . . . . . . . . . . . . . . 149
High/Low Beam Changer . . . . . 172
Lane Keep Assist . . . . . . . . . . . . . 146
Low Fuel Warning . . . . . . . . . . . . 149
Seat Belt Reminders . . . . . . . . . . 140
Security . . . . . . . . . . . . . . . . . . . . . . 149
StabiliTrak OFF . . . . . . . . . . . . . . . 147
Tire Pressure . . . . . . . . . . . . . . . . . 148
Tow/Haul Mode . . . . . . . . . . . . . . . 146
Traction Control System
(TCS)/StabiliTrak . . . . . . . . . . . . 147
Traction Off . . . . . . . . . . . . . . . . . . . 147
Locking Rear Axle . . . . . . . . . . . . . . 232
Locks
Automatic Door . . . . . . . . . . . . . . . . . 42
Delayed Locking . . . . . . . . . . . . . . . . 42
Door . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Lockout Protection . . . . . . . . . . . . . . 42
Power Door . . . . . . . . . . . . . . . . . . . . . 42
Safety . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Loss of Control . . . . . . . . . . . . . . . . . 192
Low Fuel Warning Light . . . . . . . . . 149
Low-Profile Tires . . . . . . . . . . . . . . . . 322 Lower Anchors and Tethers
for Children (LATCH
System) . . . . . . . . . . . . . . . . . . . . . . . 104
Lumbar Adjustment . . . . . . . . . . . . . . 63
Front Seats . . . . . . . . . . . . . . . . . . . . . 63
M Magnetic Ride Control . . . . . . . . . . 232
Maintenance
Records . . . . . . . . . . . . . . . . . . . . . . 382
Maintenance and Care
Additional . . . . . . . . . . . . . . . . . . . . . 376
Maintenance Schedule . . . . . . . . . 370
Recommended Fluids and
Lubricants . . . . . . . . . . . . . . . . . . . 379
Transfer Case . . . . . . . . . . . . . . . . 222
Malfunction Indicator Lamp . . . . . 143
Manual Mode . . . . . . . . . . . . . . . . . . . 218
Memory Features . . . . . . . . . . . . . . . . 12
Memory Seats . . . . . . . . . . . . . . . . . . . 64
Messages
Engine Power . . . . . . . . . . . . . . . . 158
Vehicle . . . . . . . . . . . . . . . . . . . . . . . 157
Vehicle Speed . . . . . . . . . . . . . . . . 158
Mirror
Child-View . . . . . . . . . . . . . . . . . . . . . . 56
Mirrors
Automatic Dimming . . . . . . . . . . . . . 54 Mirrors (cont'd)
Automatic Dimming
Rearview . . . . . . . . . . . . . . . . . . . . . . 56
Blind Spot . . . . . . . . . . . . . . . . . . . . . . 54
Convex . . . . . . . . . . . . . . . . . . . . . . . . . 52
Folding . . . . . . . . . . . . . . . . . . . . . . . . . 53
Heated . . . . . . . . . . . . . . . . . . . . . . . . . 54
Manual Rearview . . . . . . . . . . . . . . . 55
Power . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Tilt in Reverse . . . . . . . . . . . . . . . . . . 55
Mirrors, Interior Rearview . . . . . . . . 55
Monitor System, Tire
Pressure . . . . . . . . . . . . . . . . . . . . . . 329
N Navigation
OnStar . . . . . . . . . . . . . . . . . . . . . . . 402
Net, Convenience . . . . . . . . . . . . . . 120
New Vehicle Break-In . . . . . . . . . . . 204
Noise Control System . . . . . . . . . . 301
O Odometer . . . . . . . . . . . . . . . . . . . . . . . 136
Trip . . . . . . . . . . . . . . . . . . . . . . . . . . . 136
Off-Road . . . . . . . . . . . . . . . . . . . . . . . 192
Driving . . . . . . . . . . . . . . . . . . . . . . . . 192
Recovery . . . . . . . . . . . . . . . . . . . . . 191
Oil
Engine . . . . . . . . . . . . . . . . . . . . . . . . 283