Black plate (27,1)GMC 2015i Yukon/Yukon XL Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-8431503) - 2015 - crc - 8/11/14
Vehicle Care 10-27
Starter Switch Check
{Warning
When you are doing this
inspection, the vehicle could
move suddenly. If the vehicle
moves, you or others could be
injured.
1. Before starting this check, be sure there is enough room
around the vehicle.
2. Apply both the parking brake and the regular brake.
Do not use the accelerator
pedal, and be ready to turn off
the engine immediately if it
starts.
3. Try to start the engine in each gear. The vehicle should start
only in P (Park) or N (Neutral).
If the vehicle starts in any other
position, contact your dealer for
service.
Automatic Transmission
Shift Lock Control
Function Check
{Warning
When you are doing this
inspection, the vehicle could
move suddenly. If the vehicle
moves, you or others could be
injured.
1. Before starting this check, be sure there is enough room
around the vehicle. It should be
parked on a level surface.
2. Apply the parking brake. Be ready to apply the regular brake
immediately if the vehicle begins
to move.
3. With the engine off, turn the ignition on, but do not start the
engine. Without applying the
regular brake, try to move the
shift lever out of P (Park) with normal effort. If the shift lever
moves out of P (Park), contact
your dealer for service.
Ignition Transmission
Lock Check
If equipped with a key type ignition,
while parked and with the parking
brake set, try to turn the ignition to
LOCK/OFF in each shift lever
position.
.The ignition should turn to
LOCK/OFF only when the shift
lever is in P (Park).
.The ignition key should come
out only in LOCK/OFF.
Contact your dealer if service is
required.
Black plate (69,1)GMC 2015i Yukon/Yukon XL Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-8431503) - 2015 - crc - 8/11/14
Vehicle Care 10-69
10. Tire/Wheel Retainer
11. Hoist Cable
1. Open the hoist shaft accessdoor (3) on the bumper to
access the spare tire lock (6).
If equipped with a hitch cover,
turn the hitch cover retainers
counterclockwise and pull the
cover downward to remove it
before removing the hoist shaft
access door.
2. To remove the spare tire lock (6), insert the ignition key, turn it
clockwise and then pull it
straight out.
3. Assemble the two jack handleextensions (4) and wheel
wrench (5), as shown.4. Insert the open end of theextension (7) through the hole in
the rear bumper (8) (hoist shaft
access hole).
Be sure the hoist end of the
extension (7) connects to the
hoist shaft. The ribbed square
end of the extension is used to
lower the spare tire.
5. Turn the wheel wrench counterclockwise to lower the
spare tire to the ground.
Continue to turn the wheel
Black plate (83,1)GMC 2015i Yukon/Yukon XL Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-8431503) - 2015 - crc - 8/11/14
Vehicle Care 10-83
4. Shift the transfer case toN (Neutral). See “Shifting into
N (Neutral)” underFour-Wheel
Drive on page 9-37 for the
proper procedure. Check that
the vehicle is in N (Neutral) by
shifting the transmission to
R (Reverse) and then to D
(Drive). There should be no
movement of the vehicle while
shifting.
5. With the transmission in D (Drive), turn the ignition to ACC/
ACCESSORY. Vehicles with
Keyless Access, turn the
engine off.
{Caution
Failure to disconnect the negative
battery cable or to have it contact
the terminals can cause damage
to the vehicle.
6. Disconnect the negative battery cable at the battery and secure
the nut and bolt. Cover the negative battery post with a
non-conductive material to
prevent any contact with the
negative battery terminal.
7. Shift the transmission to P (Park).
{Caution
If the steering column is locked,
vehicle damage may occur.
9. Move the steering wheel to make sure the steering column
is unlocked.
10. Release the parking brake.
11. Keep the ignition key in the towed vehicle in ACC/
ACCESSORY to prevent the
steering column from locking.
Vehicles with Keyless Access,
keep the RKE Transmitter
outside of the vehicle, and
manually lock doors. Access
vehicle same as dead vehicle/
transmitter process (back up
key in door lock). Disconnecting the Towed Vehicle
Before disconnecting the towed
vehicle:
1. Park on a level surface.
2. Set the parking brake, shift the
transmission to P (Park).
3. Connect the battery.
4. Apply the brake pedal.
5. Start the engine, then shift the transfer case out of N (Neutral)
to Two-Wheel Drive High. See
Four-Wheel Drive on page 9-37
for directions on shifting out of
N (Neutral).
6. Check that the vehicle is in Two-Wheel Drive High by
shifting the transmission to
R (Reverse) and then to D
(Drive). There should be
movement of the vehicle while
shifting.
7. Shift the transmission to P (Park) and turn off the ignition.
8. Disconnect the vehicle from the tow vehicle.
Black plate (90,1)GMC 2015i Yukon/Yukon XL Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-8431503) - 2015 - crc - 8/11/14
10-90 Vehicle Care
{Caution
Chrome wheels and other chrome
trim may be damaged if the
vehicle is not washed after driving
on roads that have been sprayed
with magnesium, calcium,
or sodium chloride. These
chlorides are used on roads for
conditions such as ice and dust.
Always wash the chrome with
soap and water after exposure.
{Caution
To avoid surface damage, do not
use strong soaps, chemicals,
abrasive polishes, cleaners,
brushes, or cleaners that contain
acid on aluminum or
chrome-plated wheels. Use only
approved cleaners. Also, never
drive a vehicle with aluminum or
chrome-plated wheels through an(Continued)
Caution (Continued)
automatic car wash that uses
silicone carbide tire cleaning
brushes. Damage could occur
and the repairs would not be
covered by the vehicle warranty.
Steering, Suspension, and
Chassis Components
Visually inspect steering,
suspension, and chassis
components for damaged, loose,
or missing parts or signs of wear at
least once a year.
Inspect power steering for proper
hook-up, binding, leaks, cracks,
chafing, etc.
Visually check constant velocity joint
boots and axle seals for leaks.
For 1500 Series vehicles, at least
every other oil change lubricate the
outer tie rod ends. Control arm ball joints on 1500
Series vehicles are
maintenance-free.
{Caution
Lubrication of applicable Steering/
Suspension points should not be
done unless temperature is -12°C
(10°F) or higher, or damage could
result.
Body Component Lubrication
Lubricate all key lock cylinders,
hood hinges, liftgate hinges, steel
fuel door hinge and power assist
step hinges, unless the components
are plastic. Applying silicone grease
on weatherstrips with a clean cloth
will make them last longer, seal
better, and not stick or squeak.
Underbody Maintenance
At least twice a year, spring and fall,
use plain water to flush any
corrosive materials from the
underbody. Take care to thoroughly
Black plate (4,1)GMC 2015i Yukon/Yukon XL Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-8431503) - 2015 - crc - 8/11/14
11-4 Service and Maintenance
.Check ignition transmission lock.
SeeIgnition Transmission Lock
Check on page 10-27.
.Check parking brake and
automatic transmission park
mechanism. See Park Brake and
P (Park) Mechanism Check on
page 10-28.
.Check accelerator pedal for
damage, high effort, or binding.
Replace if needed.
.Visually inspect gas strut for
signs of wear, cracks, or other
damage. Check the hold open
ability of the strut. See your
dealer if service is required.
.Inspect sunroof track and seal,
if equipped. See Sunroof on
page 2-35.
.Verify spare tire key lock
operation and lubricate as
needed. See Tire Changing on
page 10-67.
Black plate (13,1)GMC 2015i Yukon/Yukon XL Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-8431503) - 2015 - crc - 8/11/14
Service and Maintenance 11-13
UsageFluid/Lubricant
Transfer Case (Four-Wheel Drive) DEXRON
®-VI Automatic Transmission Fluid.
Front Axle Propshaft Spline or One-Piece Propshaft Spline
(Two-Wheel Drive with Auto. Trans.) Spline Lubricant, Special Lubricant (GM Part No. 19257121, in
Canada 19257122).
Key Lock Cylinders, Hood Hinges, Power Assist Steps, and OuterTailgate Handle Pivot Points Multi-Purpose Lubricant, Superlube (GM Part No. 12346241, in
Canada 10953474).
Weatherstrip Conditioning Weatherstrip Lubricant (GM Part No. 3634770, in Canada 10953518) or Dielectric Silicone Grease (GM Part No. 12345579, in Canada 10953481).
Weatherstrip Squeaks Synthetic Grease with Teflon, Superlube (GM Part No. 12371287, in Canada 10953437).
Maintenance Replacement Parts
Replacement parts identified below by name, part number, or specification can be obtained from your dealer.
Part GM Part Number ACDelco Part Number
Engine Air Cleaner/Filter 22845992 A3181C
Oil Filter 89017525 PF63
Passenger Compartment Air Filter 22808781 CF188
Black plate (12,1)GMC 2015i Yukon/Yukon XL Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-8431503) - 2015 - crc - 8/11/14
13-12 Customer Information
Current and Past Models
Technical Service Bulletins and
Manuals are available for current
and past model GM vehicles.
ORDER TOLL FREE:
1-800-551-4123 Monday–Friday
8:00 AM –6:00 PM Eastern Time
For Credit Card Orders Only
(VISA-MasterCard-Discover), see
Helm, Inc. at: www.helminc.com.
Or write to:
Helm, Incorporated
Attention: Customer Service
47911 Halyard Drive
Plymouth, MI 48170
Prices are subject to change without
notice and without incurring
obligation. Allow ample time for
delivery.
All listed prices are quoted in U.S.
funds. Make checks payable in U.S.
funds.
Radio Frequency
Identification (RFID)
RFID technology is used in some
vehicles for functions such as tire
pressure monitoring and ignition
system security, as well as in
connection with conveniences such
as Remote Keyless Entry (RKE)
transmitters for remote door locking/
unlocking and starting, and
in-vehicle transmitters for garage
door openers. RFID technology in
GM vehicles does not use or record
personal information or link with any
other GM system containing
personal information.
Radio Frequency
Statement
This vehicle has systems that
operate on a radio frequency that
complies with Part 15/Part 18 of the
Federal Communications
Commission (FCC) rules and with
Industry Canada Standards
RSS-GEN/210/220/310. Operation is subject to the following
two conditions:
1. The device may not cause
harmful interference.
2. The device must accept any interference received, including
interference that may cause
undesired operation of the
device.
Changes or modifications to any of
these systems by other than an
authorized service facility could void
authorization to use this equipment.
Black plate (2,1)GMC 2015i Yukon/Yukon XL Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-8431503) - 2015 - crc - 8/11/14
14-2 OnStar
.Give OnStar Turn-by-Turn
Navigation voice commands.
Requires a specific OnStar
subscription plan.
.Obtain the WiFi network name,
or Service Set Identifier or SSID,
and passphrase (if equipped).
Press
Qto connect to a live
Advisor to:
.Verify account information or
update contact information.
.Get driving directions. Requires
a specific OnStar
subscription plan.
.Receive On-Demand
Diagnostics for a check of the
vehicle’s key operating systems.
.Receive Roadside Assistance.
.Manage WiFi Settings (if
equipped).
Press
>to get a priority connection
to an OnStar Emergency Advisor
available 24/7 to:
.Get help for an emergency.
.Be a Good Samaritan or
respond to an AMBER Alert.
.Get assistance in severe
weather or other crisis and
evacuation routes.
OnStar Services
Emergency
With Automatic Crash Response,
the OnStar system can
automatically connect to an OnStar
Emergency Advisor. The built-in
system can automatically connect to
help in certain crashes.
Press
>to connect to an OnStar
Emergency Advisor. GPS
technology is used to identify the
vehicle location and can provide
important information to emergency
personnel. OnStar Emergency
Advisors are trained to provide
assistance and link to existing
public emergency service providers
in emergency situations.
With OnStar Crisis Assist, specially
trained Crisis Advisors are available
24 hours a day, 7 days a week, to
provide a central point of contact,
assistance, and information if a
crisis occurs.