light GMC TERRAIN 2021 Workshop Manual

GMC Terrain/Terrain Denali Owner Manual(GMNA-Localizing-U.S./Canada/
Mexico-14420055) - 2021 - CRC - 11/13/20
116 Lighting
Lighting
Exterior Lighting
Exterior Lamp Controls . . . . . . . . . . . . . . . . . 116
Headlamp High/Low-Beam Changer . . . . 117
Flash-to-Pass . . . . . . . . . . . . . . . . . . . . . . . . . . . 118
Daytime Running Lamps (DRL) . . . . . . . . . 118
Automatic Headlamp System . . . . . . . . . . 118
Hazard Warning Flashers . . . . . . . . . . . . . . 119
Turn and Lane-Change Signals . . . . . . . . . 119
Fog Lamps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119
Interior Lighting
Instrument Panel IlluminationControl . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120
Courtesy Lamps . . . . . . . . . . . . . . . . . . . . . . . 120
Dome Lamps . . . . . . . . . . . . . . . . . . . . . . . . . . 120
Reading Lamps . . . . . . . . . . . . . . . . . . . . . . . . 120
Lighting Features
Entry Lighting . . . . . . . . . . . . . . . . . . . . . . . . . . 121
Exit Lighting . . . . . . . . . . . . . . . . . . . . . . . . . . . 121
Battery Load Management . . . . . . . . . . . . . 121
Battery Power Protection . . . . . . . . . . . . . . 122
Exterior Lighting Battery Saver . . . . . . . . . 122
Exterior Lighting
Exterior Lamp Controls
The exterior lamp control is on the
instrument panel to the left of the steering
column.
There are four positions.
O: Turns the exterior lamps off and
deactivates the AUTO mode. Turn to
O
again to reactivate the AUTO mode.
In Canada, the headlamps will automatically
reactivate when the vehicle is shifted out of
P (Park). AUTO :
Turns the exterior lamps on and off
automatically depending on outside lighting.
;: Turns on the parking lamps including
all lamps, except the headlamps.
5: Turns on the headlamps together with
the parking lamps and instrument panel
lights.
IntelliBeam®System
If equipped, this system turns the vehicle's
high-beam headlamps on and off according
to surrounding traffic conditions.
The system turns the high-beam headlamps
on when it is dark enough and there is no
other traffic present.
This light
bcomes on in the instrument
cluster when the IntelliBeam system is
enabled.

GMC Terrain/Terrain Denali Owner Manual(GMNA-Localizing-U.S./Canada/
Mexico-14420055) - 2021 - CRC - 11/13/20
Lighting 117
Turning On and Enabling IntelliBeam
To enable the IntelliBeam system, press
bon the turn signal lever when it is
dark outside and the exterior lamp control is
in AUTO or
5.
Driving with IntelliBeam
The system only activates the high beams
when driving over 40 km/h (25 mph).
The blue high-beam on light appears on the
instrument cluster when the high beams
are on.
There is a sensor near the top center of the
windshield that automatically controls the
system. Keep this area of the windshield
clear of debris to allow for best system
performance. The high-beam headlamps remain on, under
the automatic control, until one of the
following situations occurs:
.The system detects an approaching
vehicle's headlamps.
.The system detects a preceding vehicle's
taillamps.
.The outside light is bright enough that
high-beam headlamps are not required.
.The vehicle's speed drops below 20 km/h
(12 mph).
.The IntelliBeam system is disabled by the
button on the turn signal lever. If this
happens, press
bon the turn signal
lever when the exterior lamp control is in
the AUTO or
5position to reactivate the
IntelliBeam system. The instrument
cluster light will come on to indicate the
IntelliBeam system is reactivated.
.The IntelliBeam system will turn off if the
fog lamps are turned on.
The high beams may not turn off
automatically if the system cannot detect
another vehicle's lamps because of any of
the following:
.The other vehicle's lamps are missing,
damaged, obstructed from view,
or otherwise undetected.
.The other vehicle's lamps are covered
with dirt, snow, and/or road spray.
.The other vehicle's lamps cannot be
detected due to dense exhaust, smoke,
fog, snow, road spray, mist, or other
airborne obstructions.
.The vehicle's windshield is dirty, cracked,
or obstructed by something that blocks
the view of the light sensor.
.The vehicle is loaded such that the front
end points upward, causing the light
sensor to aim high and not detect
headlamps and taillamps.
.The vehicle is being driven on winding or
hilly roads.
The automatic high-beam headlamps may
need to be disabled if any of the above
conditions exist.
Headlamp High/Low-Beam
Changer
Push the turn signal lever away from you
and release, to turn the high beams on. To
return to low beams, push the lever again
or pull it toward you and release.

GMC Terrain/Terrain Denali Owner Manual(GMNA-Localizing-U.S./Canada/
Mexico-14420055) - 2021 - CRC - 11/13/20
118 Lighting
This indicator light turns on in the
instrument cluster when the high-beam
headlamps are on.
Flash-to-Pass
The flash-to-pass feature works with the low
beams or Daytime Running Lamps (DRL) on
or off.
To flash the high beams, pull the turn signal
lever toward you momentarily and then
release it.
Daytime Running Lamps (DRL)
DRL can make it easier for others to see the
front of your vehicle during the day.
The DRL system comes on in daylight when
the following conditions are met:
.The ignition is on.
.The exterior lamp control is in AUTO.
.The light sensor determines it is daytime.When the DRL are on, the taillamps,
sidemarker lamps, instrument panel lights,
and other lamps will not be on. The
instrument cluster will be lit.
The DRL turn off when the ignition is off.
The regular headlamp system should be
turned on when needed.
Automatic Headlamp System
When the exterior lamp control is set to
AUTO and it is dark enough outside, the
headlamps come on automatically.
There is a light sensor on top of the
instrument panel. Do not cover the sensor;
otherwise the headlamps will come on when
they are not needed. The system may also turn on the headlamps
when driving through a parking garage or
tunnel.
When it is bright enough outside, the
headlamps will turn off or may change to
Daytime Running Lamps (DRL).
The automatic headlamp system turns off
when the exterior lamp control is turned to
Oor the ignition is off.
Lights On with Wipers
If the windshield wipers are activated in
daylight with the engine on, and the
exterior lamp control is in AUTO, the
headlamps, parking lamps, and other
exterior lamps come on. The transition time
for the lamps coming on varies based on
wiper speed. When the wipers are not
operating, these lamps turn off. Move the
exterior lamp control to
Oor;to disable
this feature.

GMC Terrain/Terrain Denali Owner Manual(GMNA-Localizing-U.S./Canada/
Mexico-14420055) - 2021 - CRC - 11/13/20
Lighting 119
Hazard Warning Flashers
|:Press to make the front and rear turn
signal lamps flash on and off. This warns
others that you are having trouble.
Press
|again to turn the flashers off.
Turn and Lane-Change Signals
Move the lever all the way up or down to
signal a turn.
An arrow on the instrument cluster flashes
in the direction of the turn or lane change.
Raise or lower the lever until the arrow
starts to flash to signal a lane change. Hold
it there until the lane change is completed.
If the lever is briefly pressed and released,
the turn signal flashes three times.
The turn and lane-change signal can be
turned off manually by moving the lever
back to its original position.
If after signaling a turn or lane change, the
arrow flashes rapidly or does not come on, a
signal bulb may be burned out. Replace any burned out bulbs. If a bulb is
not burned out, check the fuse. See
Fuses
and Circuit Breakers 0280.
Fog Lamps
The ignition and parking lamps or
headlamps must be on for the front fog
lamps to work.
If equipped, the front fog lamps provide
extra illumination to the sides of the road
and improve visibility in fog or snow.
#:Press to turn the fog lamps on or off.
An indicator light on the instrument cluster
comes on when the fog lamps are on.
Some localities have laws that require the
headlamps to be on along with the fog
lamps.

GMC Terrain/Terrain Denali Owner Manual(GMNA-Localizing-U.S./Canada/
Mexico-14420055) - 2021 - CRC - 11/13/20
120 Lighting
Some localities have laws that require the
high beams to be off when the fog lamps
are on.
Interior Lighting
Instrument Panel Illumination
Control
This feature adjusts the brightness of all
illuminated controls. The instrument panel
illumination control is next to the exterior
lamp control.
Push the knob in all the way until it extends
out and then turn the knob clockwise or
counterclockwise to brighten or dim the
lights. Push the knob back in when finished.
The knob is functional at night, or when the
headlamps or parking lamps are ON.
Courtesy Lamps
The courtesy lamps come on when
any door is opened,
Kon the RKE
transmitter is pressed, or when the ignition
is switched off. See Dome Lamps0120.
Dome Lamps
The dome lamp controls are in the overhead
console.
To operate, press the following buttons:
jOFF : Press to turn off the dome
lamps when any door is opened,
Kon the
RKE transmitter is pressed, or when the
ignition is switched off. An indicator light on
the button will turn on when the dome lamp override is activated. Press
jOFF
again to deactivate this feature and the
indicator light will turn off. The dome lamps
will come on when any door is opened,
K
on the RKE transmitter is pressed, or when
the ignition is switched off.
+ ON/OFF : Press to turn the dome lamps
on manually.
Reading Lamps
There are reading lamps on the overhead
console and over the rear passenger
doors. These lamps come on when any door
is opened,
Kon the RKE transmitter is
pressed, or when the ignition is
switched off.
To operate, the ignition must be on, or in
ACC/ACCESSORY, or using Retained Accessory
Power (RAP).

GMC Terrain/Terrain Denali Owner Manual(GMNA-Localizing-U.S./Canada/
Mexico-14420055) - 2021 - CRC - 11/13/20
Lighting 121
Front Reading Lamps
The front reading lamps are in the overhead
console.
Press the lamp lenses to turn the front
reading lamps on or off.
Rear Reading Lamps Press the lamp lens to turn the rear
passenger reading lamps on or off.
Lighting Features
Entry Lighting
Some exterior lamps turn on briefly at
night, or in areas with limited lighting,
when
Kis pressed on the Remote Keyless
Entry (RKE) transmitter. After about
30 seconds, the exterior lamps turn off.
Entry lighting can be disabled manually by
turning the ignition on or to ACC/
ACCESSORY, or by pressing
Kon the RKE
transmitter. When any door is opened,
or the
Kon the RKE transmitter is pressed,
all interior lights turn on if the dome lamp
control is in the DOOR position. After closing
the doors, the interior lamps dim to off
after 20 seconds.
The entry lighting feature for exterior
lighting can be changed. See “Vehicle
Locator Lights” underVehicle Personalization
0 108.
Exit Lighting
Some exterior lamps come on at night, or in
areas with limited lighting, when the driver
door is opened after the ignition is turned
off. The interior lights come on after the
ignition is turned off. The exterior lamps and
interior lights remain on for a set amount of
time, then automatically turn off.
The exterior lamps turn off immediately by
turning the exterior lamp control off.
This exit lighting for exterior lights can be
changed. See Vehicle Personalization 0108.
Battery Load Management
The vehicle has Electric Power Management
(EPM) that estimates the battery's
temperature and state of charge. It then
adjusts the voltage for best performance
and extended life of the battery.
When the battery's state of charge is low,
the voltage is raised slightly to quickly bring
the charge back up. When the state of
charge is high, the voltage is lowered
slightly to prevent overcharging. If the
vehicle has a voltmeter gauge or a voltage
display on the Driver Information Center

GMC Terrain/Terrain Denali Owner Manual(GMNA-Localizing-U.S./Canada/
Mexico-14420055) - 2021 - CRC - 11/13/20
122 Lighting
(DIC), you may see the voltage move up or
down. This is normal. If there is a problem,
an alert will be displayed.
The battery can be discharged at idle if the
electrical loads are very high. This is true for
all vehicles. This is because the generator
(alternator) may not be spinning fast
enough at idle to produce all of the power
needed for very high electrical loads.
A high electrical load occurs when several of
the following are on, such as: headlamps,
high beams, rear window defogger, climate
control fan at high speed, heated seats,
engine cooling fans, trailer loads, and loads
plugged into accessory power outlets.
EPM works to prevent excessive discharge of
the battery. It does this by balancing the
generator's output and the vehicle's
electrical needs. It can increase engine idle
speed to generate more power whenever
needed. It can temporarily reduce the power
demands of some accessories.
Normally, these actions occur in steps or
levels, without being noticeable. In rare
cases at the highest levels of corrective
action, this action may be noticeable to the
driver. If so, a DIC message might bedisplayed and it is recommended that the
driver reduce the electrical loads as much as
possible.
Battery Power Protection
This feature shuts off the interior lamps if
they are left on for more than 10 minutes
when the ignition is off. This helps to
prevent the battery from running down.
Exterior Lighting Battery Saver
The exterior lamps turn off about 10 minutes
after the ignition is turned off, if the parking
lamps or headlamps have been manually
left on. This protects against draining the
battery. To restart the 10-minute timer, turn
the exterior lamp control to the off position
and then back to the parking lamp or
headlamp position.
To keep the lamps on for more than
10 minutes, the ignition must be on or in
ACC/ACCESSORY.

GMC Terrain/Terrain Denali Owner Manual(GMNA-Localizing-U.S./Canada/
Mexico-14420055) - 2021 - CRC - 11/13/20
Infotainment System 125
3.{
.Press to go to the Home Page. See
“Home Page”later in this section.
.Press to exit Android Auto or Apple
CarPlay. To enter back into Android
Auto or Apple CarPlay, press and
hold. SeeApple CarPlay and
Android Auto 0160.
4.6
.Radio: Press and release to go to
the next station or channel. Press
and hold to fast seek the next
strongest station or channel.
.USB/Bluetooth: Press to seek the
next track. Press and hold to fast
forward through a track. Release to
return to playing speed. See USB
Port 0134 or
Bluetooth Audio 0136.
5.oBACK
.Press to return to the previous
display in a menu.
6.V
.Turn to highlight a feature. Press
to activate the highlighted feature.
Base Radio
1.O(Power)
.Press to turn the power on.
.Press and hold to turn the
power off.
.Press to mute/unmute the system
when on.
When the power is on and the
system is not muted, a quick
status pane will display when
Ois
pressed. Pressing
Owill mute the
system and trigger this pane to
show a long press is required to
power down the system.
.Turn to decrease or increase the
volume.
2. MEDIA
.Press to change the media source
to USB, Bluetooth, or AUX.
3. RADIO
.Press to change the audio source
to AM, FM or SXM (if equipped).
4.gord(Previous/Next)
.Radio: Pressgand release to go
to the previous station or channel.
Press and hold to fast seek the
next strongest previous station or
channel. See AM-FM Radio 0130.

GMC Terrain/Terrain Denali Owner Manual(GMNA-Localizing-U.S./Canada/
Mexico-14420055) - 2021 - CRC - 11/13/20
126 Infotainment System
.USB/Bluetooth: Pressgto seek
to the beginning of the current or
previous track. Press and hold to
quickly reverse through a track.
Release to return to playing speed.
See USB Port 0134 or
Bluetooth Audio 0136.
.Radio: Pressdand release to go
to the next station or channel.
Press and hold to fast seek the
next strongest station or channel.
.USB/Bluetooth: Pressdto seek
the next track. Press and hold to
fast forward through a track.
Release to return to playing speed.
See USB Port 0134 or
Bluetooth Audio 0136.
5. TONE
.If equipped, press to adjust the
Bass, Midrange, Treble,
or Surround, if equipped. See
AM-FM Radio 0130.
6.{(Home Page)
.Press to go to the Home Page. See
“Home Page” later in this section.
.Press to exit Android Auto or Apple
CarPlay. To enter back into Android
Auto or Apple CarPlay, press and
hold. SeeApple CarPlay and
Android Auto 0160.
7.oBACK
.Press to return to the previous
display in a menu.
8. MENU
.Turn to highlight a feature. Press
to activate the highlighted feature.
Home Page
The Home Page is where vehicle application
icons are accessed. Some applications are
disabled when the vehicle is moving.
The Home Page can be set up to have up to
four pages with eight icons per page.
Swipe left or right across the display to
access the pages of icons.
Managing Home Page Icons 1. Touch and hold any of the Home Page icons to enter edit mode.
2. Continue holding the icon and drag it to the desired position.
3. Release your finger to drop the icon in the desired position. 4. To move an application to another page,
drag the icon to the edge of the display
toward the desired page.
5. Continue dragging and dropping application icons as desired.
Steering Wheel Controls
If equipped, some audio controls can be
adjusted at the steering wheel.

GMC Terrain/Terrain Denali Owner Manual(GMNA-Localizing-U.S./Canada/
Mexico-14420055) - 2021 - CRC - 11/13/20
128 Infotainment System
Apple CarPlay
Touch the Apple CarPlay icon to activate
Apple CarPlay (if equipped) after a
supported device is connected. SeeApple
CarPlay and Android Auto 0160.
Android Auto
Touch the Android Auto icon to activate
Android Auto (if equipped) after a supported
device is connected. See Apple CarPlay and
Android Auto 0160.
Apps
If equipped, in-vehicle apps are available for
download. Touch the Apps icon on the
Home Page to begin.
Downloading and using in-vehicle apps
requires Internet connectivity which can be
accessed with a data plan through the
vehicle’s built-in 4G LTE Wi-Fi hotspot,
if equipped, or a compatible mobile device
hotspot. On most mobile devices, activation
of the Wi-Fi hotspot is in the device’s
Settings menu under Mobile Network
Sharing, Personal Hotspot, Mobile Hotspot,
or similar. Availability of apps and connectivity varies
by vehicle, conditions, and location. Data
plan rates apply. Features are subject to
change. For more information, see
www.my.gmc.com/learn.
OnStar Services
If equipped, touch the OnStar Services icon
to display the OnStar Services and Account
pages. See
OnStar Overview 0357 and
OnStar System 0137.
Camera
If equipped, touch the Camera icon to access
the camera application. See Assistance
Systems for Parking or Backing 0232.
Shortcut Tray
The shortcut tray is near the bottom of the
display. It shows up to four applications.
Infotainment Display Features
Infotainment display features show on the
display when available. When a feature is
unavailable, it may gray out. When a
feature is touched, it may highlight.
Haptic Feedback
If equipped, haptic feedback is a pulse that
occurs when an icon or option is touched on
the display or when controls on the center
stack are pressed.
Infotainment Gestures
Use the following finger gestures to control
the infotainment system.
Touch/Tap
Touch/tap is used to select an icon or
option, activate an application, or change
the location inside a map.