GMC 2020 Sierra 2500HD Owner's manual

Category
Cars
Type
Owner's manual
84186890 B
C
M
Y
CM
MY
CY
CMY
K
20_GMC_Sierra_SierraDenali_COV_en_US_84186890B_2019AUG27.ai 1 8/12/2019 1:26:17 PM
GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-13337776) - 2020 - CRC - 8/27/19
Contents
Introduction . . . . . . . . . . . . . . . . . . . . . . 2
Keys, Doors, and Windows . . . . . . 9
Seats and Restraints . . . . . . . . . . . 52
Storage . . . . . . . . . . . . . . . . . . . . . . . 112
Instruments and Controls . . . . . . 117
Lighting . . . . . . . . . . . . . . . . . . . . . . . 165
Infotainment System . . . . . . . . . . 176
Climate Controls . . . . . . . . . . . . . . 177
Driving and Operating . . . . . . . . . 185
Vehicle Care . . . . . . . . . . . . . . . . . . 327
Service and Maintenance . . . . . 439
Technical Data . . . . . . . . . . . . . . . . 457
Customer Information . . . . . . . . . 462
Reporting Safety Defects . . . . . . 472
OnStar . . . . . . . . . . . . . . . . . . . . . . . . 476
Connected Services . . . . . . . . . . . 484
Index . . . . . . . . . . . . . . . . . . . . 487
GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-13337776) - 2020 - CRC - 8/27/19
2 Introduction
Introduction
The names, logos, emblems,
slogans, vehicle model names, and
vehicle body designs appearing in
this manual including, but not limited
to, GM, the GM logo, GMC, the
GMC Truck Emblem, SIERRA, and
DENALI are trademarks and/or
service marks of General Motors
LLC, its subsidiaries, affiliates,
or licensors.
For vehicles first sold in Canada,
substitute the name General
Motors of Canada Company for
GMC Division wherever it appears
in this manual.
This manual describes features that
may or may not be on the vehicle
because of optional equipment that
was not purchased on the vehicle,
model variants, country
specifications, features/applications
that may not be available in your
region, or changes subsequent to
the printing of this owners manual.
If the vehicle has the Duramax
diesel engine, see the Duramax
diesel supplement for additional and
specific information on this engine.
Refer to the purchase
documentation relating to your
specific vehicle to confirm the
features.
Keep this manual in the vehicle for
quick reference.
Canadian Vehicle Owners
A French language manual can be
obtained from your dealer, at
www.helminc.com, or from:
Propriétaires Canadiens
On peut obtenir un exemplaire de
ce guide en français auprès du
concessionnaire ou à l'adresse
suivante:
Helm, Incorporated
Attention: Customer Service
47911 Halyard Drive
Plymouth, MI 48170
USA
Using this Manual
To quickly locate information about
the vehicle, use the Index in the
back of the manual. It is an
alphabetical list of what is in the
manual and the page number where
it can be found.
Litho in U.S.A.
Part No. 84186890 B Second Printing
©
2019 General Motors LLC. All Rights Reserved.
GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-13337776) - 2020 - CRC - 8/27/19
Introduction 3
Danger, Warning, and
Caution
Warning messages found on vehicle
labels and in this manual describe
hazards and what to do to avoid or
reduce them.
{
Danger
Danger indicates a hazard with a
high level of risk which will result
in serious injury or death.
{
Warning
Warning indicates a hazard that
could result in injury or death.
Caution
Caution indicates a hazard that
could result in property or vehicle
damage.
A circle with a slash through it is a
safety symbol which means Do
not, Do not do this, or Do not let
this happen.
Symbols
The vehicle has components and
labels that use symbols instead of
text. Symbols are shown along with
the text describing the operation or
information relating to a specific
component, control, message,
gauge, or indicator.
M : Shown when the owner s
manual has additional instructions
or information.
* : Shown when the service
manual has additional instructions
or information.
0 : Shown when there is more
information on another page
see page.
Vehicle Symbol Chart
Here are some additional symbols
that may be found on the vehicle
and what they mean. See the
features in this manual for
information.
u : Air Conditioning System
G : Air Conditioning Refrigerant Oil
9 : Airbag Readiness Light
! : Antilock Brake System (ABS)
$ : Brake System Warning Light
9 : Dispose of Used Components
Properly
P : Do Not Apply High Pressure
Water
B : Engine Coolant Temperature
_ : Flame/Fire Prohibited
H : Flammable
[ : Forward Collision Alert
R : Fuse Block Cover Lock
Location
+ : Fuses
j : ISOFIX/LATCH System Child
Restraints
GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-13337776) - 2020 - CRC - 8/27/19
4 Introduction
Q : Keep Fuse Block Covers
Properly Installed
| : Lane Change Alert
@ : Lane Departure Warning
A : Lane Keep Assist
* : Malfunction Indicator Lamp
: : Oil Pressure
X : Park Assist
~ : Pedestrian Ahead Indicator
O : Power
7 : Rear Cross Traffic Alert
I : Registered Technician
/ : Remote Vehicle Start
> : Seat Belt Reminders
I : Side Blind Zone Alert
h : Stop/Start
7 : Tire Pressure Monitor
d : Traction Control/StabiliTrak/
Electronic Stability Control (ESC)
a : Under Pressure
V : Vehicle Ahead Indicator
GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-13337776) - 2020 - CRC - 8/27/19
Introduction 5
Instrument Panel Overview
GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-13337776) - 2020 - CRC - 8/27/19
6 Introduction
1. Tow/Haul Mode (On Some
Models). See Driver Mode
Control 0 238.
Automatic Transfer Case
Control (If Equipped). See
Four-Wheel Drive 0 227.
Driver Mode Control 0 238 (If
Equipped).
2. Air Vents 0 182.
3. Head-Up Display (HUD) 0 152
(If Equipped).
4. Turn Signal Lever. See Turn
and Lane-Change Signals
0 170.
Windshield Wiper/Washer
0 119.
5. Instrument Cluster 0 126.
6. Shift Lever. See Automatic
Transmission 0 221.
Range Selection Mode. See
Manual Mode 0 224.
7. Light Sensor. See Automatic
Headlamp System 0 168.
8. Infotainment 0 176.
9. Climate Control Systems 0 177
(If Equipped).
Dual Automatic Climate Control
System 0 179 (If Equipped).
10. Heated and Ventilated Front
Seats 0 60 (If Equipped).
11.
A Lane Keep Assist (LKA)
(1500 Series) 0 278 (If
Equipped).
X Park Assist Switch (If
Equipped). See Assistance
Systems for Parking or Backing
0 257.
h Auto Stop Disable Switch
(If Equipped). See Stop/Start
System 0 213.
5 Power Release Tailgate
(If Equipped). See Tailgate
0 29.
| Hazard Warning Flashers
0 169.
g Traction Control/Electronic
Stability Control 0 235.
A DC/AC Switch. See Power
Outlets 0 121.
@ Lane Departure Warning
(LDW) (2500/3500 Series)
0 276 (If Equipped).
5 Hill Descent Control Switch
(If Equipped). See Hill Descent
Control (HDC) 0 237.
j Power Assist Steps 0 34 (If
Equipped).
L Express Window Down
Button (If Equipped). See
Power Windows 0 47.
Tow/Haul Mode 0 227 (On
Some Models).
12. Power Outlet (Alternating
Current) (If Equipped). See
Power Outlets 0 121.
13. Power Outlets 0 121.
14. USB Port. See the infotainment
manual.
15. Wireless Charging 0 122 (If
Equipped).
GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-13337776) - 2020 - CRC - 8/27/19
Introduction 7
16. Trailer Brake Control Panel (If
Equipped). See Integrated
Trailer Brake Control System
under Towing Equipment
0 296.
17. ENGINE START/STOP. See
Ignition Positions (Keyless
Access) 0 208 or
Ignition Positions (Key Access)
0 210.
18. Steering Wheel Controls (If
Equipped). See the
infotainment manual.
Driver Information Center (DIC)
Controls. See Driver
Information Center (DIC) (Base
Level) 0 147 or
Driver Information Center (DIC)
(Midlevel and Uplevel) 0 148.
19. Horn 0 119.
20. Hood Release. See Hood
0 330.
21. Steering Wheel Adjustment
0 118 (Out of View).
22. Cruise Control 0 243.
Adaptive Cruise Control (1500
Series) 0 245 (If Equipped).
Forward Collision Alert (FCA)
System 0 268 (If Equipped).
Heated Steering Wheel 0 119
(If Equipped).
23. Data Link Connector (DLC)
(Out of View). See Malfunction
Indicator Lamp (Check Engine
Light) 0 137.
24. Electric Parking Brake 0 233.
25. Fog Lamps 0 170 (If
Equipped).
Instrument Panel Illumination
Control 0 172.
Exterior Cargo Lamps 0 171.
Exterior Lamp Controls 0 165.
Task Lighting 0 171 (If
Equipped).
GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-13337776) - 2020 - CRC - 8/27/19
8 Introduction
2 NOTES
GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-13337776) - 2020 - CRC - 8/27/19
Keys, Doors, and Windows 9
Keys, Doors, and
Windows
Keys and Locks
Keys (Key Access) . . . . . . . . . . . . . . 9
Keys (Keyless Access) . . . . . . . . 12
Remote Keyless Entry (RKE)
System . . . . . . . . . . . . . . . . . . . . . . . 13
Remote Keyless Entry (RKE)
System Operation (Key
Access) . . . . . . . . . . . . . . . . . . . . . . 13
Remote Keyless Entry (RKE)
System Operation (Keyless
Access) . . . . . . . . . . . . . . . . . . . . . . 16
Remote Vehicle Start . . . . . . . . . . 25
Door Locks . . . . . . . . . . . . . . . . . . . . 26
Power Door Locks . . . . . . . . . . . . . 27
Delayed Locking . . . . . . . . . . . . . . . 27
Automatic Door Locks . . . . . . . . . 27
Lockout Protection . . . . . . . . . . . . . 28
Safety Locks . . . . . . . . . . . . . . . . . . . 28
Doors
Tailgate . . . . . . . . . . . . . . . . . . . . . . . . 29
Power Assist Steps . . . . . . . . . . . . 34
Vehicle Security
Vehicle Security . . . . . . . . . . . . . . . . 36
Vehicle Alarm System . . . . . . . . . 36
Steering Column Lock . . . . . . . . . 37
Immobilizer . . . . . . . . . . . . . . . . . . . . 37
Immobilizer Operation . . . . . . . . . 37
Exterior Mirrors
Convex Mirrors . . . . . . . . . . . . . . . . 39
Manual Mirrors . . . . . . . . . . . . . . . . . 39
Trailer-Tow Mirrors . . . . . . . . . . . . . 40
Power Mirrors . . . . . . . . . . . . . . . . . . 41
Folding Mirrors . . . . . . . . . . . . . . . . . 42
Heated Mirrors . . . . . . . . . . . . . . . . . 43
Automatic Dimming Mirror . . . . . 43
Blind Spot Mirrors . . . . . . . . . . . . . . 43
Reverse Tilt Mirrors . . . . . . . . . . . . 44
Interior Mirrors
Interior Rearview Mirrors . . . . . . . 44
Manual Rearview Mirror . . . . . . . . 44
Automatic Dimming Rearview
Mirror . . . . . . . . . . . . . . . . . . . . . . . . . 44
Rear Camera Mirror . . . . . . . . . . . . 45
Windows
Windows . . . . . . . . . . . . . . . . . . . . . . . 47
Manual Windows . . . . . . . . . . . . . . 47
Power Windows . . . . . . . . . . . . . . . 47
Rear Windows . . . . . . . . . . . . . . . . . 49
Sun Visors . . . . . . . . . . . . . . . . . . . . . 50
Roof
Sunroof . . . . . . . . . . . . . . . . . . . . . . . . 50
Keys and Locks
Keys (Key Access)
{
Warning
Leaving children in a vehicle with
the ignition key is dangerous and
children or others could be
seriously injured or killed. They
could operate the power windows
or other controls or make the
vehicle move. The windows will
function with the keys in the
ignition, and children or others
could be caught in the path of a
closing window. Do not leave
children in a vehicle with the
ignition key.
GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-13337776) - 2020 - CRC - 8/27/19
10 Keys, Doors, and Windows
{
Warning
If the key is unintentionally
rotated while the vehicle is
running, the ignition could be
moved out of the RUN position.
This could be caused by heavy
items hanging from the key ring,
or by large or long items attached
to the key ring that could be
contacted by the driver or
steering wheel. If the ignition
moves out of the RUN position,
the engine will shut off, braking
and steering power assist may be
(Continued)
Warning (Continued)
impacted, and airbags may not
deploy. To reduce the risk of
unintentional rotation of the
ignition key, do not change the
way the ignition key and Remote
Keyless Entry (RKE) transmitter,
if equipped, are connected to the
provided key rings.
The ignition key and key rings, and
RKE transmitter, if equipped, are
designed to work together as a
system to reduce the risk of
unintentionally moving the key out
of the RUN position. The ignition
key has a small hole to allow
attachment of the provided key ring.
It is important that any replacement
ignition keys have a small hole. See
your dealer if a replacement key is
required.
The combination and size of the
rings that came with your keys were
specifically selected for your
vehicle. The rings are connected to
the key like two links of a chain to
reduce the risk of unintentionally
moving the key out of the RUN
position. Do not add any additional
items to the ring attached to the
ignition key. Attach additional items
only to the second ring, and limit
added items to a few essential keys
or small, light items no larger than
an RKE transmitter.
GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-13337776) - 2020 - CRC - 8/27/19
Keys, Doors, and Windows 11
Interference from radio-frequency
identification (RFID) tags may
prevent the key from starting the
vehicle. Keep RFID tags away from
the key when starting the vehicle.
The key is used for the ignition, all
door locks, and the glove box.
If equipped with memory seats,
keys 1 and 2 are linked to seating
positions of memory 1 or 2. See
Memory Seats 0 58.
Programming Keys
Follow these procedures to program
up to eight keys to the vehicle.
Programming with Two
Recognized Keys
To program a new key:
1. Insert the original, already
programmed key in the ignition
and turn the ignition on.
2. Turn the ignition off, and
remove the key.
3. Quickly, within five seconds,
insert the second original
already programmed key in the
ignition and turn the ignition on.
4. Turn the ignition off, and
remove the key.
5. Insert the key to be
programmed and turn the
ignition on within five seconds.
6. After a few seconds, the
security light will turn off once
the key has been programmed.
7. Repeat Steps 15 if additional
keys are to be programmed.
If a key is lost or damaged, see your
dealer to have a new key made.
Programming without
Recognized Keys
Program a new key to the vehicle
when a recognized key is not
available. Canadian regulations
require that owners see their dealer.
If two currently recognized keys are
not available, follow this procedure
to program the first key.
This procedure will take
approximately 30 minutes to
complete for the first key. The
vehicle must be off and all of the
keys you wish to program must be
with you.
1. Insert the new vehicle key into
the ignition.
2. Turn the ignition on. The
security light will come on.
3. Wait 10 minutes until the
security light turns off.
4. Turn the ignition off.
5. Repeat Steps 24 two more
times. After the third time, turn
the ignition on; the key is
GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-13337776) - 2020 - CRC - 8/27/19
12 Keys, Doors, and Windows
learned and all previously
known keys will no longer work
with the vehicle.
6. To learn a second key, turn the
ignition off, insert the second
key to be learned, and turn the
ignition on.
After two keys are learned, the
remaining keys can be learned by
following the procedure in
Programming with Two
Recognized Keys.
The key has a bar-coded key tag
that the dealer or qualified locksmith
can use to make new keys. Store
this information in a safe place, not
in the vehicle.
See your dealer if a replacement
key or additional key is needed.
If it becomes difficult to turn a key,
inspect the key blade for debris.
Periodically clean with a brush
or pick.
If locked out of the vehicle, see
Roadside Assistance Program
0 466.
With an active OnStar or connected
service plan, an OnStar Advisor
may remotely unlock the vehicle.
See OnStar Overview 0 476.
Keys (Keyless Access)
{
Warning
Leaving children in a vehicle with
an ignition key or Remote
Keyless Entry (RKE) transmitter is
dangerous and children or others
could be seriously injured or
killed. They could operate the
power window or other controls or
make the vehicle move. The
windows will function with the key
in the ignition or with the RKE
transmitter in the vehicle, and
children or others could be caught
in the path of a closing window.
Do not leave children in a vehicle
with the ignition key or an RKE
transmitter.
If the vehicle has the Keyless
Access system, the transmitter has
a button on the side of the
transmitter used to remove the key.
This key is used for the driver door
and glove box.
GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-13337776) - 2020 - CRC - 8/27/19
Keys, Doors, and Windows 13
Press the button to remove the key.
Never pull the key out without
pressing the button.
See your dealer if a replacement
key or additional key is needed.
If it becomes difficult to turn a key,
inspect the key blade for debris.
Periodically clean with a brush
or pick.
With an active OnStar or connected
service plan, an OnStar Advisor
may remotely unlock the vehicle.
See OnStar Overview 0 476.
If locked out of the vehicle, see
Roadside Assistance Program
0 466.
If equipped with memory seats, RKE
transmitters 1 and 2 are linked to
seating positions of memory 1 or 2.
See Memory Seats 0 58.
Remote Keyless Entry
(RKE) System
See Radio Frequency Statement
0 472.
If there is a decrease in the Remote
Keyless Entry (RKE) operating
range:
.
Check the distance. The
transmitter may be too far from
the vehicle.
.
Check the location. Other
vehicles or objects may be
blocking the signal.
.
Check the transmitter's battery.
See Battery Replacement later
in this section.
.
If the transmitter is still not
working correctly, see your
dealer or a qualified technician
for service.
Remote Keyless Entry
(RKE) System Operation
(Key Access)
The RKE transmitter functions may
work up to 60 m (197 ft) away from
the vehicle.
Other conditions can affect the
performance of the transmitter. See
Remote Keyless Entry (RKE)
System 0 13.
/ : Press and release Q, then
immediately press and hold
/ until
the turn signal lamps flash or for at
GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-13337776) - 2020 - CRC - 8/27/19
14 Keys, Doors, and Windows
least four seconds. The engine may
be started from outside the vehicle
using the RKE transmitter. See
Remote Vehicle Start 0 25.
Q : Press to lock all doors.
If enabled, the turn signal lamps
may flash and/or the horn may
sound on the second press to
indicate locking has occurred.
If enabled, the horn chirps when
Q
is pressed again within
three seconds. See Vehicle
Personalization 0 156.
Pressing
Q arms the alarm system.
See Vehicle Alarm System 0 36.
If equipped with remote mirror
folding, pressing and holding
Q for
one second will fold the mirrors,
if enabled. See Vehicle
Personalization 0 156.
K : Press once to unlock only the
driver door. If
K is pressed again
within three seconds, all remaining
doors unlock. The interior lamps
may come on and stay on for
20 seconds or until the ignition is
turned on.
If enabled, the turn signal lamps
flash twice to indicate unlocking has
occurred. If enabled, the exterior
lamps may turn on. See Vehicle
Personalization 0 156.
Pressing
K on the RKE transmitter
disarms the alarm system. See
Vehicle Alarm System 0 36.
If equipped with remote mirror
folding, pressing and holding
K for
one second will unfold the mirrors,
if enabled. See Vehicle
Personalization 0 156.
Press and hold
K to remotely open
the windows, if enabled. See
Vehicle Personalization 0 156.
x : Press twice quickly to release
the tailgate, if equipped.
7 : Press and release to initiate the
vehicle locator. The turn signal
lamps flash and the horn sounds
three times.
Press and hold
7 for more than
three seconds to activate the panic
alarm. The turn signal lamps flash
and the horn sounds repeatedly for
30 seconds. The alarm turns off
when the ignition is turned on or
7
is pressed again. The ignition must
be off for the panic alarm to work.
Programming Transmitters to
the Vehicle
Only RKE transmitters programmed
to this vehicle will work. If a
transmitter is lost or stolen, a
replacement can be purchased and
programmed through your dealer.
Each vehicle can have up to
eight transmitters programmed to it.
See your dealer for transmitter
programming.
GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-13337776) - 2020 - CRC - 8/27/19
Keys, Doors, and Windows 15
Battery Replacement
{
Warning
Never allow children to play with
the RKE transmitter. The
transmitter contains a small
battery, which can be a choking
hazard. If swallowed, internal
burns can occur, resulting in
severe injury or death. Seek
medical attention immediately if a
battery is swallowed.
{
Warning
To avoid personal injury, do not
touch metal surfaces on the RKE
transmitter when it has been
exposed to extreme heat. These
surfaces can be hot to the touch
at temperatures above 59 °C
(138 °F).
Caution
When replacing the battery, do
not touch any of the circuitry on
the transmitter. Static from your
body could damage the
transmitter.
Caution
Always replace the battery with
the correct type. Replacing the
battery with an incorrect type
could potentially create a risk of
battery explosion. Dispose of
used batteries according to
instructions and local laws. Do
not attempt to burn, crush, or cut
the used battery, and avoid
exposing the battery to
environments with extremely low
air pressures or high
temperatures.
Replace the battery in the
transmitter soon if the REPLACE
BATTERY IN REMOTE KEY
displays in the Driver Information
Center (DIC).
To replace the battery:
1. Separate and remove the back
cover of the transmitter with a
flat, thin object, such as a coin.
GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-13337776) - 2020 - CRC - 8/27/19
16 Keys, Doors, and Windows
2. Press and slide the battery
down toward the pocket of the
transmitter in the direction of
the key ring. Do not use a
metal object
3. Remove the battery.
4. Insert the new battery, positive
side facing up. Replace with a
CR2032 or equivalent battery.
5. Push together the transmitter
back cover top side first, and
then the bottom toward the
key ring.
Remote Keyless Entry
(RKE) System Operation
(Keyless Access)
The Keyless Access system allows
for vehicle entry when the
transmitter is within 1 m (3 ft). See
Keyless Access Operation later in
this section.
The RKE transmitter functions may
work up to 60 m (197 ft) away from
the vehicle.
Other conditions can affect the
performance of the transmitter. See
Remote Keyless Entry (RKE)
System 0 13.
The key that is part of the RKE
transmitter can be used for all locks.
Remove the key by pressing the
button on the side of the RKE
transmitter near the bottom and pull
the key out. Never pull the key out
without pressing the button.
See your dealer if a new transmitter
is needed.
GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-13337776) - 2020 - CRC - 8/27/19
Keys, Doors, and Windows 17
/ : Press and release Q, then
immediately press and hold
/ until
the turn signal lamps flash or for at
least four seconds. The engine may
be started from outside the vehicle
using the RKE transmitter. See
Remote Vehicle Start 0 25.
Q : Press to lock all doors and the
tailgate, if equipped.
If enabled, the turn signal lamps
flash and/or the horn may sound on
the second press to indicate locking
has occurred. If enabled, the horn
chirps when
Q is pressed again
within three seconds. See Vehicle
Personalization 0 156.
If the driver door is open when
Q is
pressed, all doors will lock and then
the driver door will immediately
unlock, if enabled. See Vehicle
Personalization 0 156.
If the passenger door is open when
Q is pressed, all doors lock.
Pressing
Q arms the alarm system.
See Vehicle Alarm System 0 36.
If equipped with remote mirror
folding, pressing and holding
Q for
one second will fold the mirrors,
if enabled. See Vehicle
Personalization 0 156.
K : Press once to unlock only the
driver door. If
K is pressed again
within three seconds, all remaining
doors and the tailgate unlock. The
interior lamps may come on and
stay on for 20 seconds or until the
ignition is turned on.
If enabled, the turn signal lamps
flash twice to indicate unlocking has
occurred. If enabled, the exterior
lamps may turn on. See Vehicle
Personalization 0 156.
Pressing
K on the RKE transmitter
disarms the alarm system. See
Vehicle Alarm System 0 36.
If equipped with remote mirror
folding, pressing and holding
K for
one second will unfold the mirrors,
if enabled. See Vehicle
Personalization 0 156.
Press and hold
K until the windows
fully open, if remote window
operation is enabled. See Vehicle
Personalization 0 156.
x : Press twice quickly to release
the tailgate, if equipped.
GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-13337776) - 2020 - CRC - 8/27/19
18 Keys, Doors, and Windows
7 : Press and release to initiate
vehicle locator. The turn signal
lamps flash and the horn sounds
three times.
Press and hold
7 for more than
three seconds to activate the panic
alarm. The turn signal lamps flash
and the horn sounds repeatedly for
30 seconds. The alarm turns off
when the ignition is turned on or
7
is pressed again. The ignition must
be off for the panic alarm to work.
Keyless Access Operation
The Keyless Access system allows
for doors and the tailgate to be
accessed without pressing the RKE
transmitter button. The RKE
transmitter must be within 1 m (3 ft)
of the tailgate or door being opened.
If the vehicle has this feature, there
will be a button on the outside door
handles.
Keyless Access can be
programmed to unlock all doors on
the first lock/unlock press from the
driver door. Keyless Unlocking can
also be turned off. See Vehicle
Personalization 0 156.
If equipped with memory seats, RKE
transmitters 1 and 2 are linked to
seating positions of memory 1 or 2.
See Memory Seats 0 58.
Keyless Unlocking/Locking from
the Driver Door
When the doors are locked and the
RKE transmitter is within 1 m (3 ft)
of the door handle, pressing the
lock/unlock button on the driver door
handle will unlock the driver door.
If the lock/unlock button is pressed
again within five seconds, all
passenger doors and the tailgate
will unlock.
Driver Side Shown, Passenger
Side Similar
Pressing the lock/unlock button will
cause all doors to lock if any of the
following occur:
.
It has been more than
five seconds since the first lock/
unlock button press.
.
Two lock/unlock button presses
were used to unlock all doors.
.
Any vehicle door has been
opened and all doors are now
closed.
GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-13337776) - 2020 - CRC - 8/27/19
Keys, Doors, and Windows 19
Keyless Unlocking/Locking from
the Passenger Doors
When the doors are locked and the
RKE transmitter is within 1 m (3 ft)
of the door handle, pressing the
lock/unlock button on a passenger
door handle will unlock all doors.
Pressing the lock/unlock button will
cause all doors to lock if any of the
following occur:
.
The lock/unlock button was used
to unlock all doors.
.
Any vehicle door has been
opened and all doors are now
closed.
Disable/Enable Keyless Unlocking
of Exterior Door Handles and
Tailgate
If equipped, keyless unlocking of the
exterior door handles and tailgate
can be disabled and enabled.
Disabling Keyless Unlocking:
With the vehicle off, press and
hold
Q and K on the RKE
transmitter at the same time for
approximately three seconds. The
turn signal lamps will flash four
times quickly to indicate access is
disabled. Using any exterior handle
to unlock the doors or open the
tailgate will cause the turn signal
lamps to flash four times quickly,
indicating access is disabled.
If disabled, disarm the alarm system
before starting the vehicle.
Enabling Keyless Unlocking:
With the vehicle off, press and
hold
Q and K on the RKE
transmitter at the same time for
approximately three seconds. The
turn signal lamps will flash twice
quickly to indicate access is
enabled.
Passive Locking
This feature will lock the vehicle
several seconds after all doors are
closed, if the vehicle is off and at
least one RKE transmitter has been
removed from the interior, or none
remain in the interior.
If other electronic devices interfere
with the RKE transmitter signal, the
vehicle may not detect the RKE
transmitter inside the vehicle.
If passive locking is enabled, the
doors may lock with the RKE
transmitter inside the vehicle. Do
not leave the RKE transmitter in an
unattended vehicle.
To customize the doors to
automatically lock when exiting the
vehicle, see Remote Lock, Unlock,
Start under Vehicle Personalization
0 156.
Temporary Disable of Passive
Locking
Temporarily disable passive locking
by pressing and holding
K on the
interior door switch with a door open
for at least four seconds, or until
three chimes are heard. Passive
locking will then remain disabled
until
Q on the interior door is
pressed, or until the vehicle is
turned on.
Remote Left in Vehicle Alert
When the vehicle is turned off and
an RKE transmitter is left in the
vehicle, the horn will chirp three
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GMC 2020 Sierra 2500HD Owner's manual

Category
Cars
Type
Owner's manual

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