park assist GMC SIERRA DENALI 2020 Owners Manual

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
6 Introduction
1. Tow/Haul Mode (On SomeModels). See Driver Mode
Control 0238.
Automatic Transfer Case
Control (If Equipped). See
Four-Wheel Drive 0227.
Driver Mode Control 0238 (If
Equipped).
2. Air Vents 0182.
3. Head-Up Display (HUD) 0152
(If Equipped).
4. Turn Signal Lever. See Turn
and Lane-Change Signals
0 170.
Windshield Wiper/Washer
0 119.
5. Instrument Cluster 0126.
6. Shift Lever. See Automatic
Transmission 0221.
Range Selection Mode. See
Manual Mode 0224.
7. Light Sensor. See Automatic
Headlamp System 0168.
8. Infotainment 0176. 9.
Climate Control Systems 0177
(If Equipped).
Dual Automatic Climate Control
System 0179 (If Equipped).
10. Heated and Ventilated Front
Seats 060 (If Equipped).
11.
ALane Keep Assist (LKA)
(1500 Series) 0278 (If
Equipped).
XPark Assist Switch (If
Equipped). See Assistance
Systems for Parking or Backing
0 257.
hAuto Stop Disable Switch
(If Equipped). See Stop/Start
System 0213.
5Power Release Tailgate
(If Equipped). See Tailgate
0 29.
|Hazard Warning Flashers
0 169.
gTraction Control/Electronic
Stability Control 0235.
ADC/AC Switch. See Power
Outlets 0121.
@Lane Departure Warning
(LDW) (2500/3500 Series)
0 276 (If Equipped).
5Hill Descent Control Switch
(If Equipped). See Hill Descent
Control (HDC) 0237.
jPower Assist Steps 034 (If
Equipped).
LExpress Window Down
Button (If Equipped). See
Power Windows 047.
Tow/Haul Mode 0227 (On
Some Models).
12. Power Outlet (Alternating Current) (If Equipped). See
Power Outlets 0121.
13. Power Outlets 0121.
14. USB Port. See the infotainment manual.
15. Wireless Charging 0122 (If
Equipped).

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-13337776) - 2020 - CRC - 8/27/19
30 Keys, Doors, and Windows
In the case of a dead battery, the
tailgate can be opened manually.
Contact your dealer or Roadside
Assistance.
If equipped, to lock or unlock the
tailgate, use the RKE transmitter or
the key. SeeRemote Keyless Entry
(RKE) System Operation (Key
Access) 013 or
Remote Keyless Entry (RKE)
System Operation (Keyless Access)
0 16.
The vehicle must be in P (Park).
To open the tailgate:
. Press
xtwice quickly on the
RKE transmitter until the tailgate
moves.
. Press5on the center stack.
.
Press the touch pad on the
tailgate handle after unlocking all
doors. Use the top of the tailgate
to pull against if assistance is
required. If equipped with
Keyless Access, a locked
tailgate can be opened if the
RKE transmitter is within
1 m (3 ft).
To close the tailgate, firmly push it
upward until it latches. Pull it back
to be sure it is latched securely.
MultiPro Tailgate
{Warning
Make sure there is no one in the
way of the power tailgate as it is
opening and closing, and keep
hands away from the tailgate
hinges when in use. You or others
could be injured if caught in the
path of the power tailgate or
tailgate hinges.

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-13337776) - 2020 - CRC - 8/27/19
Keys, Doors, and Windows 31
Caution
To avoid damage to the tailgate,
make sure the area behind the
tailgate is clear before opening it.
If equipped with this feature, the
vehicle must be in P (Park).
Switches in the inner tailgate
prevent the primary tailgate from
being opened when the inner
tailgate is not fully closed. To open the primary tailgate:
.
Pressxtwice quickly on the
RKE transmitter until the tailgate
moves. See Remote Keyless
Entry (RKE) System Operation
(Key Access) 013 or
Remote Keyless Entry (RKE)
System Operation (Keyless
Access) 016. If equipped with
Keyless Access, the tailgate can
be opened if the RKE transmitter
is within 1 m (3 ft).
. Press5on the center stack.
. Press the lower touch pad on
the tailgate handle after
unlocking all doors. Use the top
of the tailgate to pull against if
assistance is required.
To close the primary tailgate, firmly
push it upward until it latches. Pull it
back to be sure it is latched
securely.

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-13337776) - 2020 - CRC - 8/27/19
Keys, Doors, and Windows 35
same side to complete the motion.
If the obstruction is not cleared, the
assist steps remain extended.
Slight movement of the steps while
extended is normal.
Kick Switch
1. Place the vehicle in P (Park)and unlock the doors.
2. Kick the switch to extend the power assist step to the tire.
A Driver Information Center
(DIC) message displays.
3. Kick the switch again to return to normal operation.
Center Stack Switch
The power assist steps can be
extended to the tire by pressing
j.
When extending the steps with
j,
the kick switch is disabled. The
vehicle must be in P (Park) or
N (Neutral).
To extend the steps:
. Press
jto extend both steps.
A DIC message displays.
. Press
jagain to extend to the
tire. A DIC message displays. .
Press
jagain to return to
normal operation.
Enable/Disable
To enable or disable the power
assist steps, press and hold
jfor
four seconds. A DIC message
displays.
Cleaning
Clean the power assist steps
regularly. For an automatic car
wash, extend the steps while in
N (Neutral) using the center stack
switch. The steps will stow when
shifting into D (Drive).

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-13337776) - 2020 - CRC - 8/27/19
Keys, Doors, and Windows 41
Power Extend :If equipped, press
the power extend button to fully
extend the mirror. Press again to
retract.
Resetting the Power Extend
Mirrors
Reset the power extend mirrors if:
. The mirrors are accidentally
obstructed while extending/
retracting.
. The mirrors are accidentally
manually extended/retracted.
. The mirrors vibrate at normal
driving speeds. If a popping noise from the mirror is
heard, this sound is normal as the
manual detents are aligning after a
manual extend/retract operation has
occurred.
Auxiliary Cargo Mirror Lamps
If equipped, cargo mirror lamps face
rearward to provide more light on
the sides of the vehicle, if needed.
See
Exterior Cargo Lamps 0171.
Advanced Trailering Vision
System Side Cameras
If equipped, the Advanced Trailering
Vision System side cameras are on
the bottom of the outside mirrors.
See “Surround Vision (360
Degrees)” underAssistance
Systems for Parking or Backing
0 257.
Power Mirrors
To adjust each mirror:
1. Press
jor|to select the
driver or passenger side mirror.
The indicator light will
illuminate.
2. Press the 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. Press
jor|again to
deselect the mirror.

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-13337776) - 2020 - CRC - 8/27/19
Instruments and Controls 117
Instruments and
Controls
Controls
Steering Wheel Adjustment . . . 118
Steering Wheel Controls . . . . . . 119
Heated Steering Wheel . . . . . . . 119
Horn . . . . . . . . . . . . . . . . . . . . . . . . . . 119
Windshield Wiper/Washer . . . . 119
Compass . . . . . . . . . . . . . . . . . . . . . 120
Clock . . . . . . . . . . . . . . . . . . . . . . . . . 120
Power Outlets . . . . . . . . . . . . . . . . 121
Wireless Charging . . . . . . . . . . . . 122
Warning Lights, Gauges, and
Indicators
Warning Lights, Gauges, andIndicators . . . . . . . . . . . . . . . . . . . 125
Instrument Cluster . . . . . . . . . . . . 126
Speedometer . . . . . . . . . . . . . . . . . 130
Odometer . . . . . . . . . . . . . . . . . . . . . 131
Trip Odometer . . . . . . . . . . . . . . . . 131
Tachometer . . . . . . . . . . . . . . . . . . . 131
Fuel Gauge . . . . . . . . . . . . . . . . . . . 131
Engine Oil Pressure Gauge . . . . . . . . . . . . . . . . . . . . . . 132
Engine Coolant Temperature Gauge . . . . . . . . . . . . . . . . . . . . . . 133 Voltmeter Gauge . . . . . . . . . . . . . 134
Seat Belt Reminders . . . . . . . . . 135
Airbag Readiness Light . . . . . . . 135
Passenger Airbag Status
Indicator . . . . . . . . . . . . . . . . . . . . 136
Charging System Light . . . . . . . 137
Malfunction Indicator Lamp (Check Engine Light) . . . . . . . . 137
Brake System Warning Light . . . . . . . . . . . . . . . . . . . . . . . . 139
Electric Parking Brake Light . . . . . . . . . . . . . . . . . . . . . . . . 140
Service Electric Parking Brake Light . . . . . . . . . . . . . . . . . . . . . . . . 140
Antilock Brake System (ABS) Warning Light . . . . . . . . . . . . . . . 140
Four-Wheel-Drive Light . . . . . . . 141
Tow/Haul Mode Light . . . . . . . . . 141
Hill Descent Control Light . . . . 141
Lane Departure Warning (LDW) Light (2500/3500
Series) . . . . . . . . . . . . . . . . . . . . . . 141
Lane Keep Assist (LKA) Light (1500 Series) . . . . . . . . . . . . . . . 142
Vehicle Ahead Indicator . . . . . . 142
Pedestrian Ahead Indicator . . . 142
Traction Off Light . . . . . . . . . . . . . 142
Traction Control System (TCS)/ Electronic Stability Control
Light . . . . . . . . . . . . . . . . . . . . . . . . 143 Electronic Stability Control
(ESC) Off Light . . . . . . . . . . . . . . 143
Engine Coolant Temperature Warning Light . . . . . . . . . . . . . . . 144
Driver Mode Control Light . . . . 144
Tire Pressure Light . . . . . . . . . . . 144
Engine Oil Pressure Light
(Uplevel Cluster) . . . . . . . . . . . . 145
Low Fuel Warning Light . . . . . . 145
Security Light . . . . . . . . . . . . . . . . . 146
High-Beam On Light . . . . . . . . . . 146
Front Fog Lamp Light . . . . . . . . . 146
Lamps On Reminder . . . . . . . . . 146
Cruise Control Light . . . . . . . . . . 146
Door Ajar Light . . . . . . . . . . . . . . . 147
Information Displays
Driver Information Center (DIC) (Base Level) . . . . . . . . . . . . . . . . 147
Driver Information Center (DIC) (Midlevel and Uplevel) . . . . . . 148
Head-Up Display (HUD) . . . . . . 152
Vehicle Messages
Vehicle Messages . . . . . . . . . . . . 155
Engine Power Messages . . . . . 155
Vehicle Speed Messages . . . . . 156
Vehicle Personalization
Vehicle Personalization . . . . . . . 156

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-13337776) - 2020 - CRC - 8/27/19
152 Instruments and Controls
Head-Up Display (HUD)
{Warning
If the HUD image is too bright or
too high in your field of view, it
may take you more time to see
things you need to see when it is
dark outside. Be sure to keep the
HUD image dim and placed low in
your field of view.
If equipped with HUD, some
information about the operation of
the vehicle is projected onto the
windshield. The image is projected
through the HUD lens on top of the
instrument panel. The information
appears as an image focused out
toward the front of the vehicle.
Caution
If you try to use the HUD image
as a parking aid, you may
misjudge the distance and
damage your vehicle. Do not use
the HUD image as a parking aid.
The HUD information can be
displayed in various languages. The
speedometer reading and other
numerical values can be displayed
in either English or metric units.
The language selection is changed
through the radio, and the units of
measurement is changed through
the instrument cluster. See
“Settings” in the infotainment
manual and “Options”under
Instrument Cluster 0126.
HUD Display on the Windshield
Depending on how the vehicle is
equipped, the HUD may display
some of the following vehicle
information and vehicle messages
or alerts:
. Speed
. Audio
. Phone
. Navigation
. Driver Assistance Features
. Vehicle Messages

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-13337776) - 2020 - CRC - 8/27/19
Instruments and Controls 157
Touch Off or On.
Auto Rear Defog
This setting automatically turns the
rear defogger on based on
temperature and humidity
conditions.
Touch Off or On.
Collision/Detection Systems
Touch and the following may
display:
.Alert Type
. Forward Collision System
. Front Pedestrian Detection
. Adaptive Cruise Go Notifier
. Lane Change Alert
. Park Assist
. Rear Camera Park Assist
Symbols
. Rear Cross Traffic Alert
Alert Type
This feature sets the type of alert
from the driver assistance systems
to help avoid crashes. Touch Beeps or Safety Alert Seat.
Forward Collision System
This setting controls the vehicle
response when detecting a vehicle
ahead of you. The Off setting
disables all FCA and AEB functions.
With the Alert and Brake setting,
both FCA and AEB are available.
The Alert setting disables AEB. See
Automatic Emergency Braking
(AEB)
0270.
Touch Off, Alert, or Alert and Brake.
Front Pedestrian Detection
This feature may help avoid or
reduce the harm caused by
front-end crashes with nearby
pedestrians. See Front Pedestrian
Braking (FPB) System (1500 Series)
0 272.
Touch Off, Alert, or Alert and Brake.
Adaptive Cruise Go Notifier
This setting determines if an alert
will appear when Adaptive Cruise
Control brings the vehicle to a
complete stop and the vehicle ahead of you starts moving again.
See
Adaptive Cruise Control (1500
Series) 0245.
Touch Off or On.
Lane Change Alert
This allows the feature to be turned
on or off. See Lane Change Alert
(LCA) 0274.
Touch Off or On.
Park Assist
This allows the feature to be turned
on or off. See Assistance Systems
for Parking or Backing 0257.
Select Off, On, or On with Towbar.
Rear Camera Park Assist Symbols
This setting enables the Rear
Camera Park Assist Symbols. See
Assistance Systems for Parking or
Backing 0257.
Touch Off or On.

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-13337776) - 2020 - CRC - 8/27/19
158 Instruments and Controls
Rear Cross Traffic Alert
This allows the Rear Cross Traffic
Alert feature to be turned on or off.
SeeAssistance Systems for Parking
or Backing 0257.
Touch Off or On.
Comfort and Convenience
Touch and the following may
display:
. Chime Volume
. Reverse Tilt Mirror
. Remote Mirror Folding
Chime Volume
This determines the chime volume
level.
Touch the controls on the
infotainment display to adjust the
volume.
Reverse Tilt Mirror
This allows the feature to be turned
on or off. See Reverse Tilt Mirrors
0 44. Touch Off, On - Driver and
Passenger, On - Driver, or On -
Passenger.
Remote Mirror Folding
When on, the outside mirrors will
remotely fold or unfold when the
Remote Keyless Entry (RKE)
transmitterQorKbutton is
pressed and held. See Folding
Mirrors 042.
Touch Off or On.
Lighting
Touch and the following may
display:
. Vehicle Locator Lights
. Exit Lighting
Vehicle Locator Lights
This setting flashes the vehicle’ s
headlamps when
Kis pressed on
the Remote Keyless Entry (RKE)
transmitter.
Touch Off or On. Exit Lighting
This setting specifies how long the
headlamps stay on after the vehicle
is turned off and exited.
Touch Off, 30 Seconds, 60 Seconds,
or 120 Seconds.
Power Door Locks
Touch and the following may
display:
.
Open Door Anti Lock Out
. Auto Door Unlock
. Delayed Door Lock
Open Door Anti Lock Out
This setting prevents the driver door
from locking when the door is open.
If this setting is on, the Delayed
Door Lock menu will not be
available.
Touch Off or On.
Auto Door Unlock
This setting allows selection of
which doors will automatically
unlock when the vehicle is shifted
into P (Park).