2020 GMC ACADIA warning light

GMC Acadia/Acadia Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-13687875) - 2020 - CRC - 10/28/19
Seats and Restraints 71
Warning (Continued)
concealed damage that could
make it difficult to safely operate
the vehicle.
Use caution if you should attempt
to restart the engine after a crash
has occurred.
In many crashes severe enough to
inflate the airbag, windshields are
broken by vehicle deformation.
Additional windshield breakage may
also occur from the front outboard
passenger airbag.
. Airbags are designed to inflate
only once. After an airbag
inflates, you will need some new
parts for the airbag system.
If you do not get them, the
airbag system will not be there
to help protect you in another
crash. A new system will include
airbag modules and possibly
other parts. The service manual
for the vehicle covers the need
to replace other parts. .
The vehicle has a crash sensing
and diagnostic module which
records information after a
crash. See Vehicle Data
Recording and Privacy 0381
and
Event Data Recorders 0382.
. Let only qualified technicians
work on the airbag systems.
Improper service can mean that
an airbag system will not work
properly. See your dealer for
service.
Passenger Sensing
System
The vehicle has a passenger
sensing system for the front
outboard passenger position. The
passenger airbag status indicator
will light on the overhead console
when the vehicle is started.
United States and Canada
Mexico
The words ON and OFF, or the
symbols for on and off, will be
visible during the system check.
When the system check is
complete, either the word ON or
OFF, or the symbol for on or off, will
be visible. See Passenger Airbag
Status Indicator 0126.
The passenger sensing system
turns off the front outboard
passenger frontal airbag under
certain conditions. No other airbag
is affected by the passenger
sensing system.

GMC Acadia/Acadia Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-13687875) - 2020 - CRC - 10/28/19
72 Seats and Restraints
The passenger sensing system
works with sensors that are part of
the front outboard passenger seat
and seat belt. The sensors are
designed to detect the presence of
a properly seated occupant and
determine if the front outboard
passenger frontal airbag should be
allowed to inflate or not.
According to accident statistics,
children are safer when properly
secured in a rear seat in the correct
child restraint for their weight
and size.
Whenever possible, children aged
12 and under should be secured in
a rear seating position.
Never put a rear-facing child seat in
the front. This is because the risk to
the rear-facing child is so great,
if the airbag inflates.
{Warning
A child in a rear-facing child
restraint can be seriously injured
or killed if the passenger frontal(Continued)
Warning (Continued)
airbag inflates. This is because
the back of the rear-facing child
restraint would be very close to
the inflating airbag. A child in a
forward-facing child restraint can
be seriously injured or killed if the
passenger frontal airbag inflates
and the passenger seat is in a
forward position.
Even if the passenger sensing
system has turned off the
passenger frontal airbag, no
system is fail-safe. No one can
guarantee that an airbag will not
deploy under some unusual
circumstance, even though the
airbag is turned off.
Never put a rear-facing child
restraint in the front seat, even if
the airbag is off. If securing a
forward-facing child restraint in
the front outboard passenger
seat, always move the seat as far
back as it will go. It is better to
(Continued)
Warning (Continued)
secure child restraints in the rear
seat. Consider using another
vehicle to transport the child
when a rear seat is not available.
The passenger sensing system is
designed to turn off the front
outboard passenger frontal airbag if:
. The front outboard passenger
seat is unoccupied.
. The system determines an infant
is present in a child restraint.
. A front outboard passenger
takes his/her weight off of the
seat for a period of time.
. There is a critical problem with
the airbag system or the
passenger sensing system.
When the passenger sensing
system has turned off the front
outboard passenger frontal airbag,
the OFF indicator will light and stay
lit as a reminder that the airbag is
off. See Passenger Airbag Status
Indicator 0126.

GMC Acadia/Acadia Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-13687875) - 2020 - CRC - 10/28/19
Seats and Restraints 73
The passenger sensing system is
designed to turn on the front
outboard passenger frontal airbag
anytime the system senses that a
person of adult size is sitting
properly in the front outboard
passenger seat.
When the passenger sensing
system has allowed the airbag to be
enabled, the ON indicator will light
and stay lit as a reminder that the
airbag is active.
For some children, including
children in child restraints, and for
very small adults, the passenger
sensing system may or may not turn
off the front outboard passenger
frontal airbag, depending upon the
person's seating posture and body
build. Everyone in the vehicle who
has outgrown child restraints should
wear a seat belt properly—whether
or not there is an airbag for that
person.
{Warning
If the airbag readiness light ever
comes on and stays on, it means
that something may be wrong
with the airbag system. To help
avoid injury to yourself or others,
have the vehicle serviced right
away. See Airbag Readiness
Light 0126 for more information,
including important safety
information.
If the On Indicator Is Lit for a
Child Restraint
The passenger sensing system is
designed to turn off the front
outboard passenger frontal airbag if
the system determines that an infant
is present in a child restraint. If a
child restraint has been installed
and the ON indicator is lit:
1. Turn the vehicle off.
2. Remove the child restraint from the vehicle. 3. Remove any additional items
from the seat such as blankets,
cushions, seat covers, seat
heaters, or seat massagers.
4. Reinstall the child restraint following the directions
provided by the child restraint
manufacturer and refer to
Securing Child Restraints (With
the Seat Belt in the Rear Seat)
093 or
Securing Child Restraints (With
the Seat Belt in the Front Seat)
0 95.
Make sure the seat belt
retractor is locked by pulling
the shoulder belt all the way
out of the retractor when
installing the child restraint,
even if the child restraint is
equipped with a seat belt lock
off. When the retractor lock is
set, the belt can be tightened
but not pulled out of the
retractor.
5. If, after reinstalling the child restraint and restarting the
vehicle, the ON indicator is still
lit, turn the vehicle off. Then

GMC Acadia/Acadia Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-13687875) - 2020 - CRC - 10/28/19
Seats and Restraints 77
Airbag System Check
The airbag system does not need
regularly scheduled maintenance or
replacement. Make sure the airbag
readiness light is working. See
Airbag Readiness Light0126.
Caution
If an airbag covering is damaged,
opened, or broken, the airbag
may not work properly. Do not
open or break the airbag
coverings. If there are any
opened or broken airbag
coverings, have the airbag
covering and/or airbag module
replaced. For the location of the
airbags, see Where Are the
Airbags? 066. See your dealer
for service.
Replacing Airbag System
Parts after a Crash
{Warning
A crash can damage the airbag
systems in the vehicle.
A damaged airbag system may
not properly protect you and your
passenger(s) in a crash, resulting
in serious injury or even death. To
help make sure the airbag
systems are working properly
after a crash, have them
inspected and any necessary
replacements made as soon as
possible.
If an airbag inflates, you will need to
replace airbag system parts. See
your dealer for service.
If the airbag readiness light stays on
after the vehicle is started or comes
on when you are driving, the airbag
system may not work properly. Have
the vehicle serviced right away. See
Airbag Readiness Light 0126.
Child Restraints
Older Children
Older children who have outgrown
booster seats should wear the
vehicle’s seat belts.
The manufacturer instructions that
come with the booster seat state the
weight and height limitations for that
booster. Use a booster seat with a
lap-shoulder belt until the child
passes the fit test below:

GMC Acadia/Acadia Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-13687875) - 2020 - CRC - 10/28/19
Instruments and Controls 105
Instruments and
Controls
Controls
Steering Wheel Adjustment . . . 106
Steering Wheel Controls . . . . . . 107
Heated Steering Wheel . . . . . . . 107
Horn . . . . . . . . . . . . . . . . . . . . . . . . . . 107
Windshield Wiper/Washer . . . . 107
Rear Window Wiper/Washer . . . . . . . . . . . . . . . . . . . . . 109
Compass . . . . . . . . . . . . . . . . . . . . . 110
Clock . . . . . . . . . . . . . . . . . . . . . . . . . 110
Power Outlets . . . . . . . . . . . . . . . . 110
Wireless Charging . . . . . . . . . . . . 112
Warning Lights, Gauges, and
Indicators
Warning Lights, Gauges, and Indicators . . . . . . . . . . . . . . . . . . . 114
Instrument Cluster (Base and
Midlevel) . . . . . . . . . . . . . . . . . . . . 115
Instrument Cluster (Uplevel) . . . . . . . . . . . . . . . . . . . . 119
Speedometer . . . . . . . . . . . . . . . . . 121
Odometer . . . . . . . . . . . . . . . . . . . . . 121
Trip Odometer . . . . . . . . . . . . . . . . 121
Tachometer . . . . . . . . . . . . . . . . . . . 121 Fuel Gauge . . . . . . . . . . . . . . . . . . . 122
Engine Oil Temperature
Gauge . . . . . . . . . . . . . . . . . . . . . . 123
Engine Coolant Temperature Gauge . . . . . . . . . . . . . . . . . . . . . . 123
Voltmeter Gauge . . . . . . . . . . . . . 124
Seat Belt Reminders . . . . . . . . . 125
Airbag Readiness Light . . . . . . . 126
Passenger Airbag Status Indicator . . . . . . . . . . . . . . . . . . . . 126
Charging System Light . . . . . . . 127
Malfunction Indicator Lamp (Check Engine Light) . . . . . . . . 127
Brake System Warning Light . . . . . . . . . . . . . . . . . . . . . . . . 129
Electric Parking Brake Light . . . . . . . . . . . . . . . . . . . . . . . . 130
Service Electric Parking Brake Light (Uplevel and Midlevel
Cluster Only) . . . . . . . . . . . . . . . . 130
Antilock Brake System (ABS) Warning Light . . . . . . . . . . . . . . . 130
Gear Shifting Light . . . . . . . . . . . 131
Tow/Haul Mode Light . . . . . . . . . 131
Hill Descent Control Light . . . . 131
Lane Keep Assist (LKA) Light . . . . . . . . . . . . . . . . . . . . . . . . 131
Vehicle Ahead Indicator . . . . . . 132
Pedestrian Ahead Indicator . . . 132
Traction Off Light . . . . . . . . . . . . . 132 StabiliTrak OFF Light . . . . . . . . . 133
Traction Control System (TCS)/
StabiliTrak Light . . . . . . . . . . . . . 133
Engine Coolant Temperature Warning Light . . . . . . . . . . . . . . . 133
Tire Pressure Light . . . . . . . . . . . 134
Engine Oil Pressure Light . . . . 134
Low Fuel Warning Light . . . . . . 135
Security Light . . . . . . . . . . . . . . . . . 135
High-Beam On Light . . . . . . . . . . 135
Front Fog Lamp Light . . . . . . . . . 136
Lamps On Reminder . . . . . . . . . 136
Cruise Control Light . . . . . . . . . . 136
Door Ajar Light . . . . . . . . . . . . . . . 136
Information Displays
Driver Information Center (DIC) (Base) . . . . . . . . . . . . . . . . 137
Driver Information Center (DIC) (Midlevel and Uplevel) . . . . . . 139
Head-Up Display (HUD) . . . . . . 142
Vehicle Messages
Vehicle Messages . . . . . . . . . . . . 145
Engine Power Messages . . . . . 146
Vehicle Speed Messages . . . . . 146
Vehicle Personalization
Vehicle Personalization . . . . . . . 146

GMC Acadia/Acadia Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-13687875) - 2020 - CRC - 10/28/19
114 Instruments and Controls
THIS SOFTWARE IS PROVIDED
BY THE COPYRIGHT HOLDERS
AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED
WARRANTIES, INCLUDING, BUT
NOT LIMITED TO, THE IMPLIED
WARRANTIES OF
MERCHANTABILITY AND FITNESS
FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT
SHALL THE COPYRIGHT HOLDER
OR CONTRIBUTORS BE LIABLE
FOR ANY DIRECT, INDIRECT,
INCIDENTAL, SPECIAL,
EXEMPLARY, OR
CONSEQUENTIAL DAMAGES
(INCLUDING, BUT NOT LIMITEDTO, PROCUREMENT OF
SUBSTITUTE GOODS OR
SERVICES; LOSS OF USE, DATA,
OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER
CAUSED AND ON ANY THEORY
OF LIABILITY, WHETHER IN
CONTRACT, STRICT LIABILITY,
OR TORT (INCLUDING
NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF
THE USE OF THIS SOFTWARE,
EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.Warning Lights,
Gauges, and
Indicators
Warning lights and gauges can
signal that something is wrong
before it becomes serious enough
to cause an expensive repair or
replacement. Paying attention to the
warning lights and gauges could
prevent injury.
Some warning lights come on briefly
when the engine is started to
indicate they are working. When
one of the warning lights comes on
and stays on while driving, or when
one of the gauges shows there may
be a problem, check the section that
explains what to do. Waiting to do
repairs can be costly and even
dangerous.

GMC Acadia/Acadia Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-13687875) - 2020 - CRC - 10/28/19
116 Instruments and Controls
Base Cluster Menu
There is an interactive display area
in the center of the instrument
cluster.
Use the right steering wheel control
to open and scroll through the
different items and displays.
Press
oto access the cluster
applications. Use
worxthrough
the list of available applications. Not
all applications will be available on
all vehicles.
. Info App. This is where the
selected Driver Information
Center (DIC) displays can be viewed. See
“Driver Information
Center (DIC) (Base and
Midlevel)” in the Index.
. Options
Options
Press
Vto select the Options app,
then press
pto enter the Options
menu. Use
worxto scroll through
items in the Options menu.
Units : Press
pwhile Units is
displayed to enter the Units menu.
Choose English or Metric units by
pressing
Vwhile the desired item is
highlighted.
Info Pages : Press
pwhile Info
Pages is displayed to enter the Info
Pages menu and select the items to
be displayed in the Info app.
Speed Warning : The Speed
Warning display allows you to set a
speed not to be exceeded. To set,
press
pwhen Speed Warning is
displayed.
Scroll
worxto adjust the value.
Press
Vto set the speed. Once the speed is set, this feature
can be turned off by pressing
V
while viewing this page. If the
selected speed limit is exceeded, a
pop-up warning is displayed with a
chime.
Midlevel Cluster Menu
There is an interactive display area
in the center of the instrument
cluster.
Use the right steering wheel control
to open and scroll through the
different items and displays.

GMC Acadia/Acadia Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-13687875) - 2020 - CRC - 10/28/19
124 Instruments and Controls
English Base and Midlevel
Metric Uplevel
English Uplevel
This gauge shows the engine
coolant temperature.
If the pointer moves toward the
warning area at the high end of the
gauge, the engine is too hot.
If the engine coolant has
overheated and the vehicle has
been operating under normal driving
conditions, pull off the road, stop the
vehicle, and turn off the engine as
soon as possible. See Engine
Overheating 0279.
Voltmeter Gauge
When the ignition is on, this gauge
indicates the battery voltage.
When the engine is running, this
gauge shows the condition of the
charging system. The gauge can
transition from a higher to lower or a
lower to higher reading. This is
normal. If the vehicle is operating
outside the normal operating range,
the charging system light comes on.
See Charging System Light 0127.
Readings outside the normal
operating range can also occur
when a large number of electrical