2020 GMC ACADIA ECO mode

GMC Acadia/Acadia Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-13687875) - 2020 - CRC - 10/28/19
256 Driving and Operating
Electric Trailer
BrakesBlue
Battery Feed Red/Black or
Red/Blue
Brake Apply
Signal White/Blue
Ground Black
Refer to the aftermarket electric
trailer brake controller owner's
manual to determine wire color
coding of the electric trailer brake
controller. The wire colors on the
brake controller may be different
from the vehicle. It may be
necessary to have a technician
connect the 12-volt power to the
engine compartment fuse block. The
electric trailer brake controller
should be installed by your dealer or
a qualified service center.
Trailer Lamps
Always check all trailer lamps are
working at the beginning of each
trip, and periodically on longer trips.
Turn Signals When Towing a
Trailer
When properly connected, the trailer
turn signals should will illuminate to
indicate the vehicle is turning,
changing lanes, or stopping. When
towing a trailer, the arrows on the
instrument cluster will illuminate
even if the trailer is not properly
connected or the bulbs are
burned out.
Tow/Haul Mode
For instructions on how to enter
Tow/Haul mode, see Driver Mode
Control 0212.
Tow/Haul assists when pulling a
heavy trailer or a large or heavy
load. See Tow/Haul Mode 0206.
Tow/Haul Mode is designed to be
most effective when the vehicle and
trailer combined weight is at least
75% of the vehicle's Gross
Combined Weight Rating (GCWR).
See “Weight of the Trailer” under
Trailer Towing 0250. Tow/Haul Mode is most useful when
towing a heavy trailer or carrying a
large or heavy load:
.
through rolling terrain
. in stop-and-go traffic
. in busy parking lots
Operating the vehicle in Tow/Haul
Mode when lightly loaded or not
towing will not cause damage;
however, it is not recommended and
may result in unpleasant engine and
transmission driving characteristics
and reduced fuel economy.
Trailer Sway
Control (TSC)
Vehicles with StabiliTrak/Electronic
Stability Control (ESC) have a
Trailer Sway Control (TSC) feature.
Trailer sway is unintended
side-to-side motion of a trailer while
towing. If the vehicle is towing a
trailer and the TSC detects that
sway is increasing, the vehicle
brakes are selectively applied at
each wheel, to help reduce
excessive trailer sway. If equipped
with the Integrated Trailer Brake

GMC Acadia/Acadia Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-13687875) - 2020 - CRC - 10/28/19
Vehicle Care 279
mixture to the coolant surge
tank until the level reaches the
indicated level mark.
5. Replace the pressure cap tightly.
6. Verify coolant level after the engine is shut off and the
coolant is cold. If necessary,
repeat coolant fill procedure
Steps 1–6.
If the coolant still is not at the
proper level when the system
cools down again, see your
dealer.
Caution
If the pressure cap is not tightly
installed, coolant loss and engine
damage may occur. Be sure the
cap is properly and tightly
secured.
Automatic Coolant Service Fill
(2.0L Engine Only)
If equipped, this feature assists in
filling and removing air from the
cooling system after service of
components or when coolant is
added after being too low.
To activate the fill and air removal
process:
1. With a cold system, disconnect the vent line from the port near
the cap on the surge tank. Add
coolant to the indicated mark
on the surge tank.
2. Reconnect the vent line to the surge tank and replace the cap
on the surge tank.
3. Connect the vehicle to a battery charger.
4. Put the vehicle in Service Mode. See Ignition Positions
0 190.
5. Turn off the air conditioning.
6. Set the parking brake. 7. At the same time, press the
accelerator and the brake for
automatic transmission
vehicles for two seconds, then
release.
At the end of the cycle, check the
coolant level in the surge tank and
add coolant, if it is low. Turn off the
vehicle, allow the Engine Control
Module (ECM) to go to sleep, about
two minutes, and repeat steps 3-7.
Listen for pump activation and
movement of the control valves
while watching the level of the tank.
If the tank empties, turn the ignition
off, carefully remove the surge tank
cap, refill to the indicated mark and
repeat steps 3-6. The fill and air
removal process will run for
approximately 10 minutes.
Engine Overheating
The vehicle has several indicators
to warn of the engine overheating.
There is an engine coolant
temperature gauge on the
instrument cluster. See Engine
Coolant Temperature Gauge 0123.

GMC Acadia/Acadia Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-13687875) - 2020 - CRC - 10/28/19
304 Vehicle Care
Maximum Loaded Vehicle
Weight
:The sum of curb
weight, accessory weight,
vehicle capacity weight, and
production options weight.
Normal Occupant Weight
:The
number of occupants a vehicle
is designed to seat multiplied by
68 kg (150 lb). See Vehicle Load
Limits 0186.
Occupant Distribution
:
Designated seating positions.
Outward Facing Sidewall
:The
side of an asymmetrical tire that
has a particular side that faces
outward when mounted on a
vehicle. The side of the tire that
contains a whitewall, bears
white lettering, or bears
manufacturer, brand, and/or
model name molding that is
higher or deeper than the same
moldings on the other sidewall
of the tire. Passenger (P-Metric) Tire
:A
tire used on passenger cars and
some light duty trucks and
multipurpose vehicles.
Recommended Inflation
Pressure
:Vehicle
manufacturer's recommended
tire inflation pressure as shown
on the tire placard. See Tire
Pressure 0305 and
Vehicle Load Limits 0186.
Radial Ply Tire
:A pneumatic
tire in which the ply cords that
extend to the beads are laid at
90 degrees to the centerline of
the tread.
Rim
:A metal support for a tire
and upon which the tire beads
are seated.
Sidewall
:The portion of a tire
between the tread and the bead. Speed Rating
:An
alphanumeric code assigned to
a tire indicating the maximum
speed at which a tire can
operate.
Traction
:The friction between
the tire and the road surface.
The amount of grip provided.
Tread
:The portion of a tire that
comes into contact with
the road.
Treadwear Indicators
:Narrow
bands, sometimes called wear
bars, that show across the tread
of a tire when only 1.6 mm
(1/16 in) of tread remains. See
When It Is Time for New Tires
0 313.
UTQGS (Uniform Tire Quality
Grading Standards)
:A tire
information system that provides
consumers with ratings for a
tire's traction, temperature, and
treadwear. Ratings are
determined by tire
manufacturers using

GMC Acadia/Acadia Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-13687875) - 2020 - CRC - 10/28/19
Vehicle Care 341
Removing the Vehicle from a Dolly1. Make sure the vehicle is secured to the dolly.
2. Open the door and open the hood of the vehicle.
3. Connect the negative (–) terminal connector from the
12-volt battery.
4. Press and hold ENGINE START/STOP with your foot off
the brake for five seconds.
5. Hold the brake pedal and press the parking brake switch for
five seconds until the parking
brake light flashes.
6. Turn the vehicle off.
7. Unsecure the vehicle and remove it from the dolly.
8. Do not drive in Service Mode with the parking brake set.Towing the Vehicle from
the RearCaution
Towing the vehicle from the rear
could damage it. Also, repairs
would not be covered by the
vehicle warranty. Never have the
vehicle towed from the rear.
Do not tow the vehicle from the rear.

GMC Acadia/Acadia Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-13687875) - 2020 - CRC - 10/28/19
378 Customer Information
center that has GM-trained
technicians and comparable
equipment.
Insuring the Vehicle
Protect your investment in the GM
vehicle with comprehensive and
collision insurance coverage. There
are significant differences in the
quality of coverage afforded by
various insurance policy terms.
Many insurance policies provide
reduced protection to the GM
vehicle by limiting compensation for
damage repairs through the use of
aftermarket collision parts. Some
insurance companies will not
specify aftermarket collision parts.
When purchasing insurance, we
recommend that you ensure that the
vehicle will be repaired with GM
original equipment collision parts.
If such insurance coverage is not
available from your current
insurance carrier, consider switching
to another insurance carrier.
If the vehicle is leased, the leasing
company may require you to have
insurance that ensures repairs with
Genuine GM Original EquipmentManufacturer (OEM) parts or
Genuine Manufacturer replacement
parts. Read the lease carefully, as
you may be charged at the end of
the lease for poor quality repairs.If a Crash Occurs
If there has been an injury, call
emergency services for help. Do not
leave the scene of a crash until all
matters have been taken care of.
Move the vehicle only if its position
puts you in danger, or you are
instructed to move it by a police
officer.
Give only the necessary information
to police and other parties involved
in the crash.
For emergency towing see
Roadside Assistance Program
0
374.
Gather the following information:
. Driver name, address, and
telephone number
. Driver license number
. Owner name, address, and
telephone number .
Vehicle license plate number
. Vehicle make, model, and
model year
. Vehicle Identification
Number (VIN)
. Insurance company and policy
number
. General description of the
damage to the other vehicle
Choose a reputable repair facility
that uses quality replacement parts.
See “Collision Parts” earlier in this
section.
If the airbag has inflated, see What
Will You See after an Airbag
Inflates? 070.
Managing the Vehicle Damage
Repair Process
In the event that the vehicle requires
damage repairs, GM recommends
that you take an active role in its
repair. If you have a pre-determined
repair facility of choice, take the
vehicle there, or have it towed there.
Specify to the facility that any
required replacement collision parts

GMC Acadia/Acadia Denali Owner Manual (GMNA-Localizing-U.S./Canada/-
Mexico-13687875) - 2020 - CRC - 10/28/19
396 Index
Driver InformationCenter (DIC) . . . . . . . . . . . . . 137, 139
Driver Mode Control . . . . . . . . . . . . 212
Driving Assistance Systems . . . . . . . . . . 231
Better Fuel Economy . . . . . . . . . 174
Characteristics andTowing Tips . . . . . . . . . . . . . . . . . 246
Defensive . . . . . . . . . . . . . . . . . . . . . 175
Drunk . . . . . . . . . . . . . . . . . . . . . . . . . 175
Hill and Mountain Roads . . . . . . 183
If the Vehicle is Stuck . . . . . . . . . 185
Loss of Control . . . . . . . . . . . . . . . 177
Off-Road . . . . . . . . . . . . . . . . . . . . . 178
Off-Road Recovery . . . . . . . . . . . 177
Vehicle Load Limits . . . . . . . . . . . 186
Wet Roads . . . . . . . . . . . . . . . . . . . 182
Winter . . . . . . . . . . . . . . . . . . . . . . . . 184
Dual Automatic Climate Control System . . . . . . . . . . . . . . . . 165
E
Electric Brake Boost . . . . . . . . . . . . 206
Electric Parking Brake . . . . . . . . . . 207
Electric Parking Brake Light . . . . 130
Electrical Equipment,Add-On . . . . . . . . . . . . . . . . . . . . . . . 258 Electrical System
Engine Compartment Fuse
Block . . . . . . . . . . . . . . . . . . . . . . . . 290
Fuses and Circuit Breakers . . . 289
Instrument Panel Fuse Block . . . . . . . . . . . . . . . . . . . . . . . . 293
Overload . . . . . . . . . . . . . . . . . . . . . 289
Rear Compartment Fuse
Block . . . . . . . . . . . . . . . . . . . . . . . . 295
Emergency OnStar . . . . . . . . . . . . . . . . . . . . . . . 385
Engine Air Cleaner/Filter . . . . . . . . . . . . . 273
Check Light (MalfunctionIndicator) . . . . . . . . . . . . . . . . . . . . 127
Compartment Overview . . . . . . . 264
Coolant Temperature
Gauge . . . . . . . . . . . . . . . . . . . . . . 123
Coolant Temperature Warning Light . . . . . . . . . . . . . . . 133
Cooling System . . . . . . . . . . . . . . . 275
Drive Belt Routing . . . . . . . . . . . . 369
Exhaust . . . . . . . . . . . . . . . . . . . . . . 200
Heater . . . . . . . . . . . . . . . . . . . . . . . . 194
Oil Life System . . . . . . . . . . . . . . . 271
Oil Pressure Light . . . . . . . . . . . . 134
Overheating . . . . . . . . . . . . . . . . . . 279
Power Messages . . . . . . . . . . . . . 146 Engine (cont'd)
Running While Parked . . . . . . . . 201
Starting . . . . . . . . . . . . . . . . . . . . . . . 192
Engine Air Filter Life System . . . . 273
Engine Oil Temperature Gauge . . . . . . . . . . 123
Entry Lighting . . . . . . . . . . . . . . . . . . . 161
Equipment, Towing . . . . . . . . . . . . . 253
Event Data Recorders . . . . . . . . . . 382
Exit Lighting . . . . . . . . . . . . . . . . . . . . 161
Extended Parking . . . . . . . . . . . . . . . 200
Extender, Seat Belt . . . . . . . . . . . . . . 63
Exterior Lamp Controls . . . . . . . . . 155
Exterior Lamps Off Reminder . . . 157
Exterior Lighting Battery Saver . . . . . . . . . . . . . . . . . . . . . . . . . 163
F
Filter,
Engine Air Cleaner . . . . . . . . . . . 273
Flash-to-Pass . . . . . . . . . . . . . . . . . . . 157
Flashers, Hazard Warning . . . . . . 159
Flat Tire . . . . . . . . . . . . . . . . . . . . . . . . 319 Changing . . . . . . . . . . . . . . . . . . . . . 328
Floor Mats . . . . . . . . . . . . . . . . . . . . . . 350
Fluid Automatic Transmission . . . . . . 272
Brakes . . . . . . . . . . . . . . . . . . . . . . . . 282

GMC Acadia/Acadia Denali Owner Manual (GMNA-Localizing-U.S./Canada/-
Mexico-13687875) - 2020 - CRC - 10/28/19
Index 399
Lights (cont'd)Engine Coolant
Temperature Warning . . . . . . . 133
Engine Oil Pressure . . . . . . . . . . 134
Flash-to-Pass . . . . . . . . . . . . . . . . . 157
Front Fog Lamp . . . . . . . . . . . . . . 136
Gear Shifting . . . . . . . . . . . . . . . . . 131
High-Beam On . . . . . . . . . . . . . . . . 135
High/Low Beam Changer . . . . . 157
Hill Descent Control . . . . . . . . . . 131
Lane Keep Assist . . . . . . . . . . . . . 131
Low Fuel Warning . . . . . . . . . . . . 135
Seat Belt Reminders . . . . . . . . . . 125
Security . . . . . . . . . . . . . . . . . . . . . . 135
Service Electric Parking Brake . . . . . . . . . . . . . . . . . . . . . . . 130
StabiliTrak OFF . . . . . . . . . . . . . . . 133
Tire Pressure . . . . . . . . . . . . . . . . . 134
Tow/Haul Mode . . . . . . . . . . . . . . . 131
Traction Control System (TCS)/StabiliTrak . . . . . . . . . . . . 133
Traction Off . . . . . . . . . . . . . . . . . . . 132
Locks Automatic Door . . . . . . . . . . . . . . . . . 19
Delayed Locking . . . . . . . . . . . . . . . . 19
Door . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Lockout Protection . . . . . . . . . . . . . . 20
Power Door . . . . . . . . . . . . . . . . . . . . . 19 Locks (cont'd)
Safety . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Loss of Control . . . . . . . . . . . . . . . . . 177
Low Fuel Warning Light . . . . . . . . . 135
Lower Anchors and Tethers for Children (LATCH
System) . . . . . . . . . . . . . . . . . . . . . . . . 85
Lumbar Adjustment . . . . . . . . . . . . . . 45 Front Seats . . . . . . . . . . . . . . . . . . . . . 45
M
MaintenanceRecords . . . . . . . . . . . . . . . . . . . . . . 364
Maintenance and Care Additional . . . . . . . . . . . . . . . . . . . . . 359
Maintenance Schedule . . . . . . . . . 353 Recommended Fluids and
Lubricants . . . . . . . . . . . . . . . . . . . 362
Malfunction Indicator Lamp . . . . . 127
Manual Mode . . . . . . . . . . . . . . . . . . . 205
Memory Seats . . . . . . . . . . . . . . . . . . . 46
Messages Engine Power . . . . . . . . . . . . . . . . 146
Vehicle . . . . . . . . . . . . . . . . . . . . . . . 145
Vehicle Speed . . . . . . . . . . . . . . . . 146
Mirror
Rear Camera . . . . . . . . . . . . . . . . . . . 34 Mirrors
Automatic Dimming . . . . . . . . . . . . . 33
Automatic Dimming
Rearview . . . . . . . . . . . . . . . . . . . . . . 33
Convex . . . . . . . . . . . . . . . . . . . . . . . . . 31
Folding . . . . . . . . . . . . . . . . . . . . . . . . . 32
Heated . . . . . . . . . . . . . . . . . . . . . . . . . 33
Manual Rearview . . . . . . . . . . . . . . . 33
Power . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Tilt in Reverse . . . . . . . . . . . . . . . . . . 33
Mirrors, Interior Rearview . . . . . . . . 33
Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . 212
Driver Control . . . . . . . . . . . . . . . . . 212
Monitor System, Tire Pressure . . . . . . . . . . . . . . . . . . . . . . 307
N
NavigationConnected Services . . . . . . . . . . 390
New Vehicle Break-In . . . . . . . . . . . 190
O
Odometer . . . . . . . . . . . . . . . . . . . . . . . 121 Trip . . . . . . . . . . . . . . . . . . . . . . . . . . . 121
Off-Road . . . . . . . . . . . . . . . . . . . . . . . 178 Driving . . . . . . . . . . . . . . . . . . . . . . . . 178
Recovery . . . . . . . . . . . . . . . . . . . . . 177
Oil Engine . . . . . . . . . . . . . . . . . . . . . . . . 269

GMC Acadia/Acadia Denali Owner Manual (GMNA-Localizing-U.S./Canada/-
Mexico-13687875) - 2020 - CRC - 10/28/19
Index 403
Tires (cont'd)Uniform Tire Quality
Grading . . . . . . . . . . . . . . . . . . . . . 316
Wheel Alignment and Tire Balance . . . . . . . . . . . . . . . . . . . . . 317
Wheel Replacement . . . . . . . . . . 318
When It Is Time for New Tires . . . . . . . . . . . . . . . . . . . . . . . . 313
Winter . . . . . . . . . . . . . . . . . . . . . . . . 299
Top Tier Fuel . . . . . . . . . . . . . . . . . . . 242
Tow/Haul Mode . . . . . . . . . . . . . . . . . 206
Tow/Haul Mode Light . . . . . . . . . . . 131
Towing Driving Characteristics . . . . . . . . 246
Equipment . . . . . . . . . . . . . . . . . . . . 253
General Information . . . . . . . . . . 246
Recreational Vehicle . . . . . . . . . . 339
Trailer . . . . . . . . . . . . . . . . . . . . . . . . 250
Trailer Sway Control (TSC) . . . 256
Vehicle . . . . . . . . . . . . . . . . . . . . . . . 338
Traction
Control System(TCS)/StabiliTrak Light . . . . . . 133
Off Light . . . . . . . . . . . . . . . . . . . . . . 132
Traction Control/Electronic Stability Control . . . . . . . . . . . . . . . 209
Trailer Sway Control (TSC) . . . . . . . . . . 256 Trailer (cont'd)
Towing . . . . . . . . . . . . . . . . . . . . . . . . 250
Transmission Automatic . . . . . . . . . . . . . . . . . . . . . 201
Fluid, Automatic . . . . . . . . . . . . . . 272
Transportation Program, Courtesy . . . . . . . . . . . . . . . . . . . . . . 376
Trip Odometer . . . . . . . . . . . . . . . . . . 121
Turn and Lane-Change Signals . . . . . . . . . . . . . . . . . . . . . . . . 159
U
Uniform Tire Quality Grading . . . 316
Universal Remote System . . . . . . 151Operation . . . . . . . . . . . . . . . . . . . . . 154
Programming . . . . . . . . . . . . . . . . . 151
Using This Manual . . . . . . . . . . . . . . . . 2
V
Vehicle
Alarm System . . . . . . . . . . . . . . . . . . 29
Canadian Owners . . . . . . . . . . . . . . . 2
Control . . . . . . . . . . . . . . . . . . . . . . . 176
Identification Number (VIN) . . . 365
Load Limits . . . . . . . . . . . . . . . . . . . 186
Messages . . . . . . . . . . . . . . . . . . . . 145
Personalization . . . . . . . . . . . . . . . 146
Remote Start . . . . . . . . . . . . . . . . . . . 15
Security . . . . . . . . . . . . . . . . . . . . . . . . 29 Vehicle (cont'd)
Speed Messages . . . . . . . . . . . . . 146
Towing . . . . . . . . . . . . . . . . . . . . . . . . 338
Vehicle Ahead Indicator . . . . . . . . 132
Vehicle Care Storing the Tire Sealantand Compressor Kit . . . . . . . . . 327
Tire Pressure . . . . . . . . . . . . . . . . . 305
Vehicle Data Recording and Privacy . . . . . . . . . . . . . . . . . . . . . . . . 381
Ventilation, Air . . . . . . . . . . . . . . . . . . 171
Visors . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Voltmeter Gauge . . . . . . . . . . . . . . . 124
W
Warning Brake System Light . . . . . . . . . . . 129
Caution and Danger . . . . . . . . . . . . . 3
Warning Lights, Gauges, and Indicators . . . . . . . . . . . . . . . . . . . . . 114
Warnings Hazard Flashers . . . . . . . . . . . . . . 159
Washer Fluid . . . . . . . . . . . . . . . . . . . 281
Wheels Alignment and Tire Balance . . 317
Different Size . . . . . . . . . . . . . . . . . 315
Replacement . . . . . . . . . . . . . . . . . 318