2021 GMC ACADIA warning light

GMC Acadia/Acadia Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-14608671) - 2021 - CRC - 10/26/20
Instruments and Controls 111
LKA may assist by gently turning the
steering wheel if the vehicle approaches a
detected lane marking. The LKA light is
amber when assisting.
This light flashes amber as a Lane Departure
Warning (LDW) alert, to indicate that the
lane marking has been crossed.
LKA will not assist or alert if the turn signal
is active in the direction of lane departure,
or if LKA detects that you are accelerating,
braking, or actively steering.
SeeLane Keep Assist (LKA) 0252.
Vehicle Ahead Indicator
If equipped, this indicator will display green
when a vehicle is detected ahead and amber
when you are following a vehicle ahead
much too closely.
See Forward Collision Alert (FCA) System
0 245.
FCA/ACC Following Gap Light
If equipped, this light indicates the following
gap setting (near, medium, or far) for FCA,
and, if equipped, Adaptive Cruise
Control (ACC).
Pedestrian Ahead Indicator
If equipped, this indicator will display amber
when a nearby pedestrian is detected in
front of the vehicle.
See Front Pedestrian Braking (FPB) System
0 248.
Traction Off Light
This light comes on briefly while starting
the engine. If it does not, have the vehicle
serviced by your dealer. If the system is
working normally, the indicator light then
turns off.
The traction off light comes on when the
Traction Control System (TCS) has been
turned off by pressing and releasing the
TCS/StabiliTrak/Electronic Stability Control
(ESC) button.
This light and the StabiliTrak OFF light come
on when StabiliTrak/ESC is turned off.
If the TCS is off, wheel speed will be limited
when necessary to protect the driveline
from damage. Adjust driving accordingly.
See Traction Control/Electronic Stability
Control 0226.

GMC Acadia/Acadia Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-14608671) - 2021 - CRC - 10/26/20
112 Instruments and Controls
StabiliTrak OFF Light
This light comes on briefly while starting
the engine. If it does not, have the vehicle
serviced by your dealer.
This light comes on when the StabiliTrak/
Electronic Stability Control (ESC) system is
turned off. If StabiliTrak/ESC is off, the
Traction Control System (TCS) is also off.
If StabiliTrak/ESC and TCS are off, the
system does not assist in controlling the
vehicle. Turn on the TCS and the StabiliTrak/
ESC systems, and the warning light
turns off.
SeeTraction Control/Electronic Stability
Control 0226.
Traction Control System (TCS)/
StabiliTrak Light
This light comes on briefly when the engine
is started.
If the light does not come on, have the
vehicle serviced by your dealer. If the
system is working normally, the indicator
light turns off.
If the light is on and not flashing, the TCS
and potentially the StabiliTrak/ESC system
have been disabled. A Driver Information
Center (DIC) message may display. Check the
DIC messages to determine which feature(s)
is no longer functioning and whether the
vehicle requires service.
If the light is on and flashing, the TCS and/
or the StabiliTrak/ESC system is actively
working.
See Traction Control/Electronic Stability
Control 0226.
Engine Coolant Temperature
Warning Light
This light comes on briefly while starting
the vehicle.
If it does not, have the vehicle serviced by
your dealer. If the system is working
normally the indicator light goes off.
Caution
The engine coolant temperature warning
light indicates that the vehicle has
overheated. Driving with this light on can
damage the engine and it may not be
covered by the vehicle warranty. See
Engine Overheating 0285.
The engine coolant temperature warning
light comes on when the engine has
overheated.

GMC Acadia/Acadia Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-14608671) - 2021 - CRC - 10/26/20
Instruments and Controls 113
If this happens, pull over and turn off the
engine as soon as possible. SeeEngine
Overheating 0285.
Tire Pressure Light
For vehicles with the Tire Pressure Monitor
System (TPMS), this light comes on briefly
when the engine is started. It provides
information about tire pressures and
the TPMS.
When the Light Is On Steady
This indicates that one or more of the tires
are significantly underinflated.
A Driver Information Center (DIC) tire
pressure message may also display. Stop as
soon as possible, and inflate the tires to the
pressure value shown on the Tire and
Loading Information label. See Tire Pressure
0 307. When the Light Flashes First and Then Is On
Steady
If the light flashes for about a minute and
then stays on, there may be a problem with
the TPMS. If the problem is not corrected,
the light will come on at every ignition
cycle. See
Tire Pressure Monitor Operation
0 310.
Engine Oil Pressure Light
Oil pressure can vary with engine speed,
outside temperature, and oil viscosity.
On some models, the oil pump will vary
engine oil pressure according to engine
needs. Oil pressure may change quickly as
the engine speed or load varies. This is
normal. If the oil pressure warning light or
Driver Information Center (DIC) message
indicates oil pressure outside the normal
operating range, check the vehicle's oil as
soon as possible.
Caution
Lack of proper engine oil maintenance
can damage the engine. Driving with the
engine oil low can also damage the
engine. The repairs would not be covered
(Continued)
Caution (Continued)
by the vehicle warranty. Check the oil
level as soon as possible. Add oil if
required, but if the oil level is within the
operating range and the oil pressure is
still low, have the vehicle serviced.
Always follow the maintenance schedule
for changing engine oil.
This light should come on briefly as the
engine is started. If it does not come on,
have the vehicle serviced by your dealer.
If the light comes on and stays on, it means
that oil is not flowing through the engine
properly. The vehicle could be low on oil
and might have some other system
problem. See your dealer.

GMC Acadia/Acadia Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-14608671) - 2021 - CRC - 10/26/20
114 Instruments and Controls
Low Fuel Warning Light
A Low Fuel Warning Light near the fuel
gauge comes on briefly when the ignition is
turned on as a check to show it is working.
It also comes on when the fuel gauge
indicator nears empty. The light turns off
when fuel is added. If it does not, have the
vehicle serviced.
Security Light
The security light should come on briefly as
the engine is started. If it does not come on,
have the vehicle serviced by your dealer.
If the system is working normally, the
indicator light turns off.If the light stays on and the engine does
not start, there could be a problem with the
theft-deterrent system. See
Immobilizer
Operation 026.
High-Beam On Light
This light comes on when the high-beam
headlamps are in use. See Headlamp High/
Low-Beam Changer 0132.
IntelliBeam Light
This light comes on when the IntelliBeam
system, if equipped, is enabled. See Exterior
Lamp Controls 0131.
Front Fog Lamp Light
The fog lamp light comes on when the fog
lamps are in use.
The light goes out when the fog lamps are
turned off. See Fog Lamps0134 for more
information.
Lamps On Reminder
This light comes on when the exterior lamps
are in use, except when only the Daytime
Running Lamps (DRL) are active. See Exterior
Lamp Controls 0131.

GMC Acadia/Acadia Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-14608671) - 2021 - CRC - 10/26/20
Instruments and Controls 121
The HUD image will automatically dim and
brighten to compensate for outside lighting.
The HUD brightness control can also be
adjusted as needed.
The HUD image can temporarily light up
depending on the angle and position of
sunlight on the HUD display. This is normal.
Polarized sunglasses could make the HUD
image harder to see.
HUD Views
There are four views in the HUD. Some
vehicle information and vehicle messages or
alerts may be displayed in any view.
Metric
EnglishSpeed View :
This displays digital speed in
English or metric units, speed limit, vehicle
ahead indicator, Lane Departure Warning/
Lane Keep Assist, and Adaptive Cruise
Control and set speed. Some information
only appears on vehicles that have these
features, and when they are active.
Metric
English
Audio/Phone View : This displays digital
speed, indicators from speed view along
with audio/phone information. The current
radio station, media type, and incoming calls
will be displayed. All HUD views may briefly display audio
information when the steering wheel
controls are used to adjust the audio
settings appearing in the instrument cluster.
Incoming phone calls may display in any
HUD view.
Metric
English
Navigation View : This displays digital
speed, indicators from speed view along
with Turn-by-Turn Navigation information in
some vehicles. The compass heading is
displayed when navigation routing is not
active.

GMC Acadia/Acadia Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-14608671) - 2021 - CRC - 10/26/20
Lighting 131
Lighting
Exterior Lighting
Exterior Lamp Controls . . . . . . . . . . . . . . . . . 131
Exterior Lamps Off Reminder . . . . . . . . . . 132
Headlamp High/Low-Beam Changer . . . . 132
Flash-to-Pass . . . . . . . . . . . . . . . . . . . . . . . . . . . 132
Daytime Running Lamps (DRL) . . . . . . . . . 133
Automatic Headlamp System . . . . . . . . . . 133
Hazard Warning Flashers . . . . . . . . . . . . . . 134
Turn and Lane-Change Signals . . . . . . . . . 134
Fog Lamps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134
Interior Lighting
Instrument Panel IlluminationControl . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135
Courtesy Lamps . . . . . . . . . . . . . . . . . . . . . . . . 135
Dome Lamps . . . . . . . . . . . . . . . . . . . . . . . . . . . 135
Reading Lamps . . . . . . . . . . . . . . . . . . . . . . . . . 135
Lighting Features
Entry Lighting . . . . . . . . . . . . . . . . . . . . . . . . . 136
Exit Lighting . . . . . . . . . . . . . . . . . . . . . . . . . . . 136
Battery Load Management . . . . . . . . . . . . 136
Battery Power Protection . . . . . . . . . . . . . . 137
Exterior Lighting Battery Saver . . . . . . . . . 137
Exterior Lighting
Exterior Lamp Controls
The exterior lamp control is on the turn
signal lever.
Turn the control to the following positions:
O: Turns off the exterior lamps and
deactivates AUTO mode. The knob returns to
the AUTO position after it is released. Turn
to
Oagain to reactivate the AUTO mode.
In Canada, the headlamps will automatically
reactivate when the vehicle is shifted out of
P (Park).
AUTO : Automatically turns the exterior
lamps on and off, depending on outside
lighting.
;: Turns on the parking lamps including
all lamps, except the headlamps.
2: 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.
Turning On and Enabling IntelliBeam
To enable the IntelliBeam system, press the
button on the end of the turn signal lever
when the exterior lamp control is in the
AUTO or
2position.

GMC Acadia/Acadia Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-14608671) - 2021 - CRC - 10/26/20
132 Lighting
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 the button on the end of
the turn signal lever when the exterior
lamp control is in the AUTO or
2
position. The instrument cluster light will
come on to indicate the IntelliBeam
system is reactivated.
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.
Exterior Lamps Off Reminder
A warning chime sounds if the driver door is
opened while the ignition is off and the
exterior lamps are on.
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.
This indicator light turns on in the
instrument cluster when the high-beam
headlamps are on.
Flash-to-Pass
To flash the high beams, pull the turn signal
lever toward you, and release.

GMC Acadia/Acadia Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-14608671) - 2021 - CRC - 10/26/20
134 Lighting
Hazard Warning Flashers
|:Press this button 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.
The turn signals do not work while the
hazard warning flashers are on.
The hazard warning flashers turn on
automatically if the airbags deploy.
Turn and Lane-Change Signals
Move the lever all the way up or down to
signal a turn.
An arrow on the instrument cluster will
flash 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 complete.
If the lever is moved momentarily to the
lane change position, the arrow will flash
three times. It will flash six times if Tow/
Haul Mode is active.
The lever returns to its starting position
when it is released.
If after signaling a turn or lane change, the
arrow flashes rapidly or does not come on, a
signal bulb may be burned out.
Have any burned out bulbs replaced. If a
bulb is not burned out, check the fuse. See
Instrument Panel Fuse Block 0296.
Fog Lamps
Use the fog lamps for better vision in foggy
or misty conditions.
To turn on the fog lamps, the ignition and
the headlamps or parking lamps must be on.
#:Turn the band down and release to
turn the fog lamps on or off. A light comes
on in the instrument cluster when the fog
lamps are in use. The ignition must be on
for the fog lamps to work.
When the headlamps are changed to high
beam, the fog lamps turn off. The fog lamps
come back on again when the high-beam
headlamps are turned off.
Some localities have laws that require the
headlamps to be on along with the fog
lamps.