2021 GMC TERRAIN sunroof

GMC Terrain/Terrain Denali Owner Manual(GMNA-Localizing-U.S./Canada/
Mexico-14420055) - 2021 - CRC - 11/13/20
6 Keys, Doors, and Windows
Keys, Doors, and
Windows
Keys and Locks
Keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Remote Keyless Entry (RKE) System . . . . . 7
Remote Keyless Entry (RKE) SystemOperation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Remote Vehicle Start . . . . . . . . . . . . . . . . . . . 13
Door Locks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Power Door Locks . . . . . . . . . . . . . . . . . . . . . . . 16
Delayed Locking . . . . . . . . . . . . . . . . . . . . . . . . 16
Automatic Door Locks . . . . . . . . . . . . . . . . . . 16
Lockout Protection . . . . . . . . . . . . . . . . . . . . . . 16
Safety Locks . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Doors
Liftgate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Vehicle Security
Vehicle Security . . . . . . . . . . . . . . . . . . . . . . . . 22
Vehicle Alarm System . . . . . . . . . . . . . . . . . . 22
Immobilizer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Immobilizer Operation . . . . . . . . . . . . . . . . . . 23
Exterior Mirrors
Convex Mirrors . . . . . . . . . . . . . . . . . . . . . . . . . 24
Power Mirrors . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Folding Mirrors . . . . . . . . . . . . . . . . . . . . . . . . . 24
Heated Mirrors . . . . . . . . . . . . . . . . . . . . . . . . . 25 Automatic Dimming Mirror . . . . . . . . . . . . . 25
Reverse Tilt Mirrors . . . . . . . . . . . . . . . . . . . . . 25
Interior Mirrors
Interior Rearview Mirrors . . . . . . . . . . . . . . . 25
Manual Rearview Mirror . . . . . . . . . . . . . . . . 25
Automatic Dimming Rearview Mirror . . . 25
Windows
Windows . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Power Windows . . . . . . . . . . . . . . . . . . . . . . . . 26
Sun Visors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Roof
Sunroof . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Keys and Locks
Keys
{Warning
Leaving children in a vehicle with a
Remote Keyless Entry (RKE) transmitter 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 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 an RKE transmitter.

GMC Terrain/Terrain Denali Owner Manual(GMNA-Localizing-U.S./Canada/
Mexico-14420055) - 2021 - CRC - 11/13/20
Keys, Doors, and Windows 25
Heated Mirrors
If equipped, the heated outside mirrors turn
on when the rear window defogger is on
and help to clear fog or frost from the
surface of the mirrors.
K:This button is on the climate control
panel.
See “Rear Window Defogger” underDual
Automatic Climate Control System 0180.
Automatic Dimming Mirror
If the vehicle has the automatic dimming
mirror, the driver outside mirror
automatically adjusts for the glare of
headlamps behind you.
Reverse Tilt Mirrors
If equipped with reverse tilt mirrors and
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) may move from their tilted
position when:
.The vehicle is shifted out of R (Reverse),
or remains in R (Reverse) for about
30 seconds.
.The vehicle is turned off.
.The vehicle is driven in R (Reverse) above
a set speed.
To turn this feature on or off, see Vehicle
Personalization 0108.
Interior Mirrors
Interior Rearview Mirrors
Adjust the rearview mirror for a clear view
of the area behind the vehicle.
Do not spray glass cleaner directly on the
mirror. Use a soft towel dampened with
water.
Manual Rearview Mirror
If equipped, push the tab forward for
daytime use and pull it rearward for
nighttime use to avoid glare of the
headlamps from behind.
Automatic Dimming Rearview
Mirror
If equipped, automatic dimming reduces the
glare of headlamps from behind. The
dimming feature comes on when the vehicle
is started.
Windows
{
Warning
Never leave a child, a helpless adult, or a
pet alone in a vehicle, especially with the
windows closed in warm or hot weather.
They can be overcome by the extreme
heat and suffer permanent injuries or
even death from heat stroke.
The vehicle aerodynamics are designed to
improve fuel economy performance. This
may result in a pulsing sound when either
rear window is down and the front windows
are up. To reduce the sound, open either a
front window or the sunroof, if equipped.

GMC Terrain/Terrain Denali Owner Manual(GMNA-Localizing-U.S./Canada/
Mexico-14420055) - 2021 - CRC - 11/13/20
Keys, Doors, and Windows 27
Warning (Continued)
damaged. Before using automatic reversal
system override, make sure that all
people and obstructions are clear of the
window path.
When the engine is on, override the
automatic reversal system by pulling and
holding the window switch if conditions
prevent it from closing.
Programming the Power Windows
Programming may be necessary if the
vehicle’s battery has been disconnected or
discharged. If the window will not express
close, program each express-close window: 1. Close all doors.
2. Turn the ignition on or to ACC/ ACCESSORY.
3. Partially open the window to be programmed. Then close it and continue
to pull the switch briefly after the
window has fully closed.
4. Open the window and continue to press the switch briefly after the window has
fully opened.
Remote Window Operation
If equipped, this feature allows all the
windows to be opened remotely.
If enabled in vehicle personalization, press
and hold
Kon the RKE transmitter. See
Vehicle Personalization 0108.
Sun Visors
Pull the sun visor down to block glare.
Detach the sun visor from the center mount
to pivot to the side window and,
if equipped, extend along the rod.
Roof
Sunroof
1. Sunroof Switch
2. Sunshade Switch
If equipped, the sunroof only operates when
the ignition is on or in ACC/ACCESSORY,
or when Retained Accessory Power (RAP) is
active. See Ignition Positions 0199 and
Retained Accessory Power (RAP) 0204.
Sunroof Switch
Vent : From the closed position, press and
release
e(1) to vent the sunroof. Press
and release
g(1) to close the vent.

GMC Terrain/Terrain Denali Owner Manual(GMNA-Localizing-U.S./Canada/
Mexico-14420055) - 2021 - CRC - 11/13/20
28 Keys, Doors, and Windows
Express-Open/Express-Close :To
express-open the sunroof, press and release
e(1). Press and releasee(1) at any
time to stop movement. To express-close the
sunroof, press and release
g(1). Press
and release
g(1) at any time to stop
movement.
Open/Close (Manual Mode) : To open the
sunroof, press and hold
e(1) until the
sunroof reaches the desired position. To
close the sunroof, press and hold
g(1).
Comfort Stop : The sunroof has a comfort
stop feature that stops the sunroof from
opening fully. Press and release the rear of
gto move the sunroof to the partially
opened comfort stop position. Pressing the
rear of
gagain will open the sunroof
fully. If the sunshade is not fully open when
the comfort stop feature is pressed the
second time, the sunshade will open fully.
Sunshade Switch
Express-open/Express-close : To express-open
the sunshade, press and release
r(2).
Press and release
r(2) at any time to
stop movement. To express-close the sunshade, press and release
Q(2). Press
and release
Q(2) at any time to stop
movement.
Open/Close (Manual Mode) : To open the
sunshade, press and hold
r(2) until the
sunshade reaches the desired position. To
close the sunshade, press and hold
Q(2).
When the sunroof is opened, an air deflector
will automatically raise. The air deflector will
retract when the sunroof is closed.
The sunroof cannot be opened or closed if
the vehicle has an electrical failure.
Automatic Reversal System
The sunroof has an automatic reversal
system that is only active when the sunroof
is operated in express-close mode.
If an object is in the path while express
closing, the reversal system will detect the
object, stop, and open the sunroof slightly.
If frost or other conditions prevent closing,
override the feature by closing the sunroof
in manual mode. To stop movement, release
the switch.
Dirt and debris may collect on the sunroof
seal or in the track. This could cause an
issue with sunroof operation or noise.
It could also plug the water drainage
system. Periodically open the sunroof and
remove any obstacles or loose debris. Wipe
the sunroof seal and roof sealing area using
a clean cloth, mild soap, and water. Do not
remove grease from the sunroof.

GMC Terrain/Terrain Denali Owner Manual(GMNA-Localizing-U.S./Canada/
Mexico-14420055) - 2021 - CRC - 11/13/20
Storage 77
For Denali, the maximum weight is as
follows:
Front-Wheel Drive
.With Sunroof: 40 kg (88 lb)
.Without Sunroof: 65 kg (143 lb)
All-Wheel Drive
.With Sunroof: 25 kg (55 lb)
.Without Sunroof: 50 kg (110 lb)
{Warning
Never load the roof rack with more
weight than specified in this section or in
the instructions that came with cross rails
and other roof rack accessories, whichever
is less. Loading cargo on the roof rack
will make the vehicle's center of gravity
higher. To avoid losing control of the
vehicle, avoid high speeds, sudden starts,
sharp turns, sudden braking, or abrupt
maneuvers when carrying cargo on the
roof rack.
The weight of any cargo carried on the roof
rack system must be included in calculating
the loaded weight of the vehicle. Do not
exceed the maximum vehicle capacity when
loading the vehicle, including cargo carried
on the roof rack system, passengers and cargo carried in the vehicle. For more
information on vehicle capacity and loading,
see
Vehicle Load Limits 0196.

GMC Terrain/Terrain Denali Owner Manual(GMNA-Localizing-U.S./Canada/
Mexico-14420055) - 2021 - CRC - 11/13/20
Infotainment System 133
Satellite Radio
SiriusXM Radio Service
If equipped, vehicles with a valid SiriusXM
radio subscription can receive SiriusXM
programming.
SiriusXM radio has a wide variety of
programming and commercial-free music,
coast to coast, in digital-quality sound. In
the U.S., see www.siriusxm.com or call
1-888-601-6296. In Canada, see
www.siriusxm.ca or call 1-877-438-9677.
When SiriusXM is active, the channel name,
number, song title, and artist appear on the
display.
SiriusXM with 360L
SiriusXM with 360L interface has enhanced
in-vehicle listening experience for
subscribers. The experience now offers more
categories and system learned
recommendations toward discovering more
personalized content.
To use the full SiriusXM 360L program,
including streaming content and listening
recommendations, OnStar Connected Access
is required. Connected vehicle services varyby model and require a complete working
electrical system, cell reception, and GPS
signal. An active connected plan is required.
Reference the SiriusXM user guide for use
and subscription information.
Radio Reception
Unplug electronic devices from the accessory
power outlets if there is interference or
static in the radio.
FM
FM signals only reach about 16 to 65 km (10
to 40 mi). Although the radio has a built-in
electronic circuit that automatically works to
reduce interference, some static can occur,
especially around tall buildings or hills,
causing the sound to fade in and out.
AM
The range for most AM stations is greater
than for FM, especially at night. The longer
range can cause station frequencies to
interfere with each other. Static can also
occur when things like storms and power
lines interfere with radio reception. When
this happens, try reducing the treble on the
radio.
SiriusXM Satellite Radio Service
If equipped, SiriusXM Satellite Radio Service
provides digital radio reception. Tall
buildings or hills can interfere with satellite
radio signals, causing the sound to fade in
and out. In addition, traveling or standing
under heavy foliage, bridges, garages,
or tunnels may cause loss of the SiriusXM
signal for a period of time. Some cellular
services may interfere with SXM reception
causing loss of signal.
Mobile Device Usage
Mobile device usage, such as making or
receiving calls, charging, or just having the
mobile device on may cause static
interference in the radio. Unplug the mobile
device or turn it off if this happens.
Multi-Band Antenna
The roof antenna is for AM, FM, SiriusXM
Satellite Radio, OnStar, and GPS (Global
Positioning System). Keep clear of
obstructions for clear reception. If the
vehicle has a sunroof, and it is open,
reception can also be affected.

GMC Terrain/Terrain Denali Owner Manual(GMNA-Localizing-U.S./Canada/
Mexico-14420055) - 2021 - CRC - 11/13/20
204 Driving and Operating
5. Plug the other end of the cord into anormal, grounded 110-volt AC outlet.
{Warning
Improper use of the heater cord or an
extension cord can damage the cord and
may result in overheating and fire.
.Plug the cord into a three-prong
electrical utility receptacle that is
protected by a ground fault detection
function. An ungrounded outlet could
cause an electric shock.
.Use a weatherproof, heavy-duty,
15 amp-rated extension cord if needed.
Failure to use the recommended
extension cord in good operating
condition, or using a damaged heater
or extension cord, could make it
overheat and cause a fire, property
damage, electric shock, and injury.
.Do not operate the vehicle with the
heater cord permanently attached to
the vehicle. Possible heater cord and
thermostat damage could occur.
(Continued)
Warning (Continued)
.While in use, do not let the heater
cord touch vehicle parts or sharp
edges. Never close the hood on the
heater cord.
.Before starting the vehicle, unplug the
cord, reattach the cover to the plug,
and securely fasten the cord. Keep the
cord away from any moving parts.
The length of time the heater should remain
plugged in depends on several factors. Ask a
dealer in the area where you will be parking
the vehicle for the best advice on this.
Retained Accessory Power (RAP)
When the ignition is turned from on to off,
the following features (if equipped) will
continue to function for up to 10 minutes,
or until the driver door is opened. These
features will also work when the ignition is
in RUN or ACC/ACCESSORY:
.Infotainment System
.Power Windows (during RAP this
functionality will be lost when any door
is opened)
.Sunroof (during RAP this functionality will
be lost when any door is opened)
.Auxiliary Power Outlet
.Audio System
.OnStar System
Shifting Into Park
{Warning
It can be dangerous to get out of the
vehicle if the vehicle is not in P (Park)
with the parking brake set. The vehicle
can roll. If you have left the engine
running, the vehicle can move suddenly.
You or others could be injured. To be
sure the vehicle will not move, even
when you are on fairly level ground, use
the steps that follow. If you are pulling a
trailer, see Driving Characteristics and
Towing Tips 0249.
To shift into P (Park): 1. Hold the brake pedal down and set the parking brake. See Electric Parking Brake
0 212.
2. Press P (Park).
3. Turn the ignition off.

GMC Terrain/Terrain Denali Owner Manual(GMNA-Localizing-U.S./Canada/
Mexico-14420055) - 2021 - CRC - 11/13/20
286 Vehicle Care
Remove the trim plate to access the fuse
block.
The vehicle may not be equipped with all of
the fuses and relays shown.
FusesUsage
F1 –
F2 Liftgate Fuses
Usage
F3 Trailer auxiliary power
F4 Power seat co-driver F5 Memory seat module
F6 Sunroof F7 Side blind zone alert
F8 Trailer reverse lamps
F9 Rear heated seat 1
F10 Park lamps F11 Rear heated seat 2
F12 –
F13 Trailer parking lamp
F14 Right trailer stoplamp/ Turn signal lamp
F15 Left parking lamp
F16 Right parking lamp F17 Video processing module
F18 Left trailer stoplamp/ Turn signal lamp
F19 All-wheel drive
F20 Lumbar