2018 GMC SIERRA Driver side side mirror

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-11349177) - 2018 - CRC - 10/17/17
In Brief 5
In Brief
Instrument Panel
Instrument Panel . . . . . . . . . . . . . . . . 6
Initial Drive Information
Initial Drive Information . . . . . . . . . . 8
Remote Keyless Entry (RKE)System . . . . . . . . . . . . . . . . . . . . . . . . 8
Remote Vehicle Start . . . . . . . . . . . 9
Door Locks . . . . . . . . . . . . . . . . . . . . . 9
Windows . . . . . . . . . . . . . . . . . . . . . . . 10
Seat Adjustment . . . . . . . . . . . . . . . 11
Memory Features . . . . . . . . . . . . . . 13
Heated and Ventilated Seats . . . 13
Head Restraint Adjustment . . . . 14
Seat Belts . . . . . . . . . . . . . . . . . . . . . 14
Passenger Sensing System . . . 14
Mirror Adjustment . . . . . . . . . . . . . . 15
Steering Wheel Adjustment . . . . 16
Throttle and Brake Pedal Adjustment . . . . . . . . . . . . . . . . . . . 17
Interior Lighting . . . . . . . . . . . . . . . . 17
Exterior Lighting . . . . . . . . . . . . . . . 18
Windshield Wiper/Washer . . . . . . 19
Climate Controls . . . . . . . . . . . . . . . 20
Transmission . . . . . . . . . . . . . . . . . . 22
Four-Wheel Drive . . . . . . . . . . . . . . 23
Vehicle Features
Infotainment System . . . . . . . . . . . 24
Radio(s) . . . . . . . . . . . . . . . . . . . . . . . 24
Satellite Radio . . . . . . . . . . . . . . . . . 25
Portable Audio Devices . . . . . . . . 25
Bluetooth . . . . . . . . . . . . . . . . . . . . . . 25
Steering Wheel Controls . . . . . . . 26
Cruise Control . . . . . . . . . . . . . . . . . 26
Driver Information Center (DIC) . . . . . . . . . . . . . . . . . 27
Forward Collision Alert (FCA) System . . . . . . . . . . . . . . . . . . . . . . . 27
Forward Automatic Braking (FAB) . . . . . . . . . . . . . . . . 27
Lane Departure Warning (LDW) . . . . . . . . . . . . . . . 28
Lane Keep Assist (LKA) . . . . . . . 28
Rear Vision Camera (RVC) . . . . 28
Parking Assist . . . . . . . . . . . . . . . . . 28
Power Outlets . . . . . . . . . . . . . . . . . 28
Universal Remote System . . . . . 29
Sunroof . . . . . . . . . . . . . . . . . . . . . . . . 29
Performance and Maintenance
Traction Control/Electronic Stability Control . . . . . . . . . . . . . . 30
Tire Pressure Monitor . . . . . . . . . . 31
Fuel (Gasoline - Except L86 6.2L Engine) . . . . . . . . . . . . . 31 Fuel (Gasoline - L86 6.2L
Engine) . . . . . . . . . . . . . . . . . . . . . . . 32
Fuel (Diesel) . . . . . . . . . . . . . . . . . . . 32
E85 or FlexFuel . . . . . . . . . . . . . . . . 32
Engine Oil Life System . . . . . . . . 32
Driving for Better Fuel Economy . . . . . . . . . . . . . . . . . . . . . 33
Roadside Assistance Program . . . . . . . . . . . . . . . . . . . . . . 33

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-11349177) - 2018 - CRC - 10/17/17
In Brief 15
United States
Canada and Mexico
See Passenger Sensing System
0 86 for important information.
Mirror Adjustment
Using hood-mounted air deflectors
and add-on convex mirror
attachments could decrease mirror
performance.
Exterior Mirrors
Manual Mirrors
If equipped, adjust manual mirrors
by moving them up and down or left
to right to see a little of the side of
the vehicle and to have a clear view
behind the vehicle.
See Manual Mirrors 047.
Power Mirrors
Base Power Mirrors
If equipped with power mirrors: 1. Press (1) or (2) to select the driver or passenger side mirror. 2. Press the arrows on the control
pad to move the mirror up,
down, right, or left.
3. Adjust each outside mirror so that a little of the vehicle and
the area behind it can be seen.
4. Keep the selector switch in the center position when not
adjusting either outside mirror.
Uplevel with Power Folding
Mirrors
1. Press (1) or (3) to select the driver or passenger side mirror.

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-11349177) - 2018 - CRC - 10/17/17
Keys, Doors, and Windows 47
When trying to start the vehicle, the
security light comes on briefly when
the ignition is turned on.
If the engine does not start and the
security light stays on, there is a
problem with the system. Turn the
ignition off and try again.
If the engine still does not start, and
the key appears to be undamaged,
try another ignition key. It may be
necessary to check the fuse. See
Fuses and Circuit Breakers0381.
If the engine still does not start with
the other key, the vehicle needs
service. If the vehicle does start, the
first key may be faulty. See your
dealer. It is possible for the immobilizer
system to learn new or replacement
keys. Up to eight keys can be
programmed for the vehicle. To
program additional keys, see
Keys
0 34. To program additional
transmitters, see your dealer.
Do not leave the key or device that
disarms or deactivates the vehicle
theft system in the vehicle.
See your dealer to get a new key
blank cut exactly as the ignition key
that operates the system.Exterior Mirrors
Convex Mirrors
{Warning
A convex mirror can make things,
like other vehicles, look farther
away than they really are. If you
cut too sharply into the right lane,
you could hit a vehicle on the
right. Check the inside mirror or
glance over your shoulder before
changing lanes.
The passenger side mirror is convex
shaped. A convex mirror's surface is
curved so more can be seen from
the driver seat.
Manual Mirrors
If equipped, adjust manual mirrors
by moving the mirror up and down
or left to right to see a little of the
side of the vehicle and to have a
clear view behind the vehicle.

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-11349177) - 2018 - CRC - 10/17/17
48 Keys, Doors, and Windows
Using hood-mounted air deflectors
and add-on convex mirror
attachments could decrease mirror
performance.
Trailer-Tow Mirrors
If equipped, adjust trailer-tow
mirrors for a clear view of the area
behind you. Manually pull out the
mirror head to extend it for better
visibility when towing a trailer.
The lower portion of the mirror is
convex. A convex mirror's surface is
curved to see more from the driverseat. The convex mirror can be
adjusted manually to the driver
preferred position for better vision.
The mirror may have a turn signal
arrow that flashes in the direction of
the turn or lane change.
Power Mirrors
Using hood-mounted air deflectors
and add-on convex mirror
attachments could decrease mirror
performance.
Base Power Mirrors
The power mirror controls are on the
driver door. 1. Press (1) or (2) to select the
driver or passenger side mirror.
2. Press one of the four arrows on the control pad to move the
mirror in the desired direction.
3. Adjust each outside mirror so that a little of the vehicle and
the area behind it can be seen.
4. Move the selector switch to the center position when not
adjusting either outside mirror.Crew/Double Cab Premium
Shown, Other Models Similar
1. Press (1) or (2) to select the driver or passenger side mirror.

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-11349177) - 2018 - CRC - 10/17/17
50 Keys, Doors, and Windows
Auto Mirror Folding
If equipped, with the ignition off,
press and hold
Qon the RKE
transmitter for approximately
one second to automatically fold the
exterior mirrors. Press and hold
K
on the RKE transmitter for
approximately one second to unfold.
See Remote Keyless Entry (RKE)
System Operation 037.
This feature is turned on or off
through vehicle personalization. See
Vehicle Personalization 0165.
Turn Signal Indicator
If equipped, indicator lights on the
mirror flash in the direction of the
turn or lane change.
Heated Mirrors
If equipped with heated mirrors:
K:Press to heat the outside
mirrors. If the vehicle has trailer-tow
mirrors, only the upper glass of the
mirror is heated. The lower convex
part of the trailer-tow mirrors is not
heated. See
“Rear Window Defogger” under
Dual Automatic Climate Control
System 0228.
Automatic Dimming
Mirror
If equipped, the driver outside mirror
automatically adjusts for the glare of
the headlamps from behind. This
feature comes on when the vehicle
is started.
Blind Spot Mirrors
If equipped, there is a small convex
mirror built into the upper and outer
corner of the driver outside mirror.
It can show objects that may be in
the vehicle's blind zone.
Driving with the Blind Spot
Mirror
Actual Mirror View

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-11349177) - 2018 - CRC - 10/17/17
Keys, Doors, and Windows 51
1. When the approaching vehicleis a long distance away, the
image in the main mirror is
small and near the inboard
edge of the mirror.
2. As the vehicle gets closer, the image in the main mirror gets
larger and moves outboard.
3. As the vehicle enters the blind zone, the image transitions
from the main mirror to the
blind spot mirror.
4. When the vehicle is in the blind zone, the image only appears
in the blind spot mirror.
Using the Outside Mirror with
the Blind Spot Mirror
1. Set the main mirror so that theside of the vehicle can just be
seen and the blind spot mirror
has an unobstructed view.
2. When checking for traffic or before changing a lane, look at
the main driver/passenger side
mirror to observe traffic in the
adjacent lane, behind your
vehicle. Check the blind spot mirror for a vehicle in the blind
zone. Then, glance over your
shoulder to double check
before moving slowly into the
adjacent lane.
Reverse Tilt Mirrors
If equipped with memory seats, the
passenger and/or driver mirror tilts
to a preselected position when the
vehicle is in R (Reverse). This
allows the curb to be seen when
parallel parking.
The mirror(s) return to the original
position when:
.
The vehicle is shifted out of
R (Reverse), or remains in
R (Reverse) for about
30 seconds.
. The ignition is turned off.
. The vehicle is driven in
R (Reverse) above a set speed.
To turn this feature on or off, see
Vehicle Personalization 0165.
Interior Mirrors
Interior Rearview Mirrors
Adjust the rearview mirror for a clear
view of the area behind your
vehicle.
If equipped with OnStar, the vehicle
may have three control buttons at
the bottom of the mirror. See your
dealer for more information about
OnStar and how to subscribe to it.
See OnStar Overview 0479.
Do not spray glass cleaner directly
on the mirror. Use a soft towel
dampened with water.

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-11349177) - 2018 - CRC - 10/17/17
64 Seats and Restraints
Save preferred memory feature
positions to both 1 and 2 if you are
the only driver.
Manually Recalling Memory
Positions
Press and hold 1, 2, or
Bto recall
the previously stored memory
positions.
To stop manual recall movement,
release 1, 2, or
B. Recall can also
be stopped by pressing a power
seat, SET, power mirror control,
power steering wheel control,
or adjustable pedal control,
if memory equipped. The driver or
passenger side mirror must be
selected.
Auto Memory Recall
The vehicle identifies the number of
the current driver ’s RKE transmitter
(1–8). See Remote Keyless Entry
(RKE) System Operation 037. If the
RKE transmitter is 1 or 2, and Auto
Memory Recall is programmed on in
vehicle personalization, the
positions saved to the same
memory button number 1 or 2 are automatically recalled when the
ignition is turned on, or turned from
off to ACC/ACCESSORY. RKE
transmitters 3–8 will not provide
automatic memory recalls.
To turn Auto Memory Recall on or
off, see "Vehicle Personalization
Settings" previously in this section
and
Vehicle Personalization 0165.
The transmission must be in
P (Park) to initiate Auto Memory
Recall. Auto Memory Recall will
complete if the vehicle is shifted out
of P (Park) prior to reaching the
stored memory position.
To stop Auto Memory Recall
movement, turn the ignition off or
press any of the following memory
controls:
. Power seat
. Memory SET, 1, 2, or
B
.Power mirror, with the driver or
passenger side mirror selected
. Power steering wheel,
if equipped
. Adjustable pedals, if equipped If the stored memory seat position
does not automatically recall or
recalls to the wrong positions, the
driver
’s RKE transmitter number
(1 or 2) may not match the memory
button number that positions were
saved to. Try storing the position to
the other memory button or try the
other RKE transmitter.
Easy Exit Recall
Easy Exit Recall is not linked to an
RKE transmitter. The position stored
to
Bis used for all drivers. To turn
Easy Exit Recall on or off, see
"Vehicle Personalization Settings"
previously in this section and
Vehicle Personalization 0165.
If turned on, the position saved to
Bis automatically recalled when
one of the following occurs:
. The vehicle is turned off and the
driver door is opened within a
short time.
. The vehicle is turned off with the
driver door open.

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-11349177) - 2018 - CRC - 10/17/17
Seats and Restraints 65
To stop Easy Exit Recall movement,
press any of the following memory
controls:
.Power seat
. Memory SET, 1, 2, or
B
.Power mirror, with the driver or
passenger side mirror selected
. Power steering wheel,
if equipped
. Adjustable pedals, if equipped
Obstructions
If something has blocked the driver
seat and/or power steering wheel
while recalling a memory position,
the recall may stop. Remove the
obstruction and try the recall again.
If the memory position still does not
recall, see your dealer for service.
Heated and Ventilated
Front Seats
{Warning
If temperature change or pain to
the skin cannot be felt, the seat
heater may cause burns. To
reduce the risk of burns, use care
when using the seat heater,
especially for long periods of
time. Do not place anything on
the seat that insulates against
heat, such as a blanket, cushion,
cover, or similar item. This may
cause the seat heater to
overheat. An overheated seat
heater may cause a burn or may
damage the seat.
Heated and Ventilated Seat
Buttons Shown, Heated Seat Buttons Similar
If equipped, the buttons are on the
center stack. To operate, the engine
must be running.
Press
Ito heat the driver or
passenger seatback only.