GMC Acadia/Acadia Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-13687875) - 2020 - CRC - 10/28/19
276 Vehicle Care
3.6L V6 Engine
1. Engine Cooling Fan (Outof View)
2. Engine Coolant Surge Tank and Pressure Cap
{Warning
An underhood electric fan can
start up even when the engine is
not running and can cause injury.
Keep hands, clothing, and tools
away from any underhood
electric fan.
{Warning
Do not touch heater or radiator
hoses, or other engine parts.
They can be very hot and can
burn you. Do not run the engine if
there is a leak; all coolant could
leak out. That could cause an
engine fire and can burn you. Fix
any leak before driving the
vehicle.
Engine Coolant
The cooling system in the vehicle is
filled with DEX-COOL engine
coolant. This coolant needs to be
checked and replaced at
appropriate intervals. See
Maintenance Schedule 0353.
The following explains the cooling
system and how to check and add
coolant when it is low. If there is a
problem with engine overheating,
see Engine Overheating 0279.
What to Use
{Warning
Do not touch heater or radiator
hoses, or other engine parts.
They can be very hot and can
burn you. Do not run the engine if
there is a leak; all coolant could
leak out. That could cause an
engine fire and can burn you. Fix
any leak before driving the
vehicle.
Use a 50/50 mixture of clean,
drinkable water and DEX-COOL
coolant. This mixture:
. Gives freezing protection down
to−37 °C (−34 °F), outside
temperature.
. Gives boiling protection up to
129 °C (265 °F), engine
temperature.
. Protects against rust and
corrosion.
. Will not damage aluminum parts.
GMC Acadia/Acadia Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-13687875) - 2020 - CRC - 10/28/19
Vehicle Care 277
.Helps keep the proper engine
temperature.
Caution
Do not use anything other than a
mix of DEX-COOL coolant that
meets GM Standard
GMW3420 and clean, drinkable
water. Anything else can cause
damage to the engine cooling
system and the vehicle, which
would not be covered by the
vehicle warranty.
Never dispose of engine coolant by
putting it in the trash, pouring it on
the ground, or into sewers, streams,
or bodies of water. Have the coolant
changed by an authorized service
center, familiar with legal
requirements regarding used
coolant disposal. This will help
protect the environment and your
health.
Checking Coolant
The vehicle must be on a level
surface when checking the coolant
level.
Check to see if coolant is visible in
the coolant surge tank. If the coolant
inside the coolant surge tank is
boiling, do not do anything else until
it cools down. See Engine
Overheating 0279.
The coolant surge tank is located in
the engine compartment on the
driver side of the vehicle. See
Engine Compartment Overview
0 264.
{Warning
Spilling coolant on hot engine
parts can burn you. Coolant
contains ethylene glycol and it will
burn if the engine parts are hot
enough.
{Warning
Steam and scalding liquids from a
hot cooling system are under
pressure. Turning the pressure
cap, even a little, can cause them
to come out at high speed and
you could be burned. Never turn
the cap when the cooling system,
including the pressure cap, is hot.
Wait for the cooling system and
pressure cap to cool.
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 397
Fluid (cont'd)Washer . . . . . . . . . . . . . . . . . . . . . . . 281
Fog Lamps . . . . . . . . . . . . . . . . . . . . . 159
Folding Mirrors . . . . . . . . . . . . . . . . . . 32
Forward Collision Alert (FCA) System . . . . . . . . . . . . . . . . . 231
Frequency Statement
Radio . . . . . . . . . . . . . . . . . . . . . . . . . 380
Front Fog Lamp Light . . . . . . . . . . . . . . . . . . . . . . . . . . 136
Front Pedestrian Braking (FPB) System . . . . . . . . . . . . . . . . . 236
Front Seats Adjustment . . . . . . . . . . . . . . . . . . . . . 43
Heated and Ventilated . . . . . . . . . . 49
Fuel
Additives . . . . . . . . . . . . . . . . . . . . . 243
Economy, Driving for Better . . . 174
Filling a Portable FuelContainer . . . . . . . . . . . . . . . . . . . 245
Filling the Tank . . . . . . . . . . . . . . . 243
Foreign Countries . . . . . . . . . . . . 243
Gauge . . . . . . . . . . . . . . . . . . . . . . . . 122
Low Fuel Warning Light . . . . . . . 135
Management, Active . . . . . . . . . . 199
Prohibited Fuels . . . . . . . . . . . . . . 243
Recommended . . . . . . . . . . . . . . . 242
Top Tier . . . . . . . . . . . . . . . . . . . . . . 242 Fuses
Engine Compartment Fuse
Block . . . . . . . . . . . . . . . . . . . . . . . . 290
Fuses and Circuit Breakers . . . 289
Instrument Panel Fuse Block . . . . . . . . . . . . . . . . . . . . . . . . 293
Rear Compartment Fuse
Block . . . . . . . . . . . . . . . . . . . . . . . . 295
G
Garage Door Opener . . . . . . . . . . . 151Programming . . . . . . . . . . . . . . . . . 151
Gas Strut(s) . . . . . . . . . . . . . . . . . . . . 286
Gauges Engine CoolantTemperature . . . . . . . . . . . . . . . . 123
Engine Oil Temperature . . . . . . . 123
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . 122
Odometer . . . . . . . . . . . . . . . . . . . . . 121
Speedometer . . . . . . . . . . . . . . . . . 121
Tachometer . . . . . . . . . . . . . . . . . . . 121
Trip Odometer . . . . . . . . . . . . . . . . 121
Voltmeter . . . . . . . . . . . . . . . . . . . . . 124
Warning Lights and
Indicators . . . . . . . . . . . . . . . . . . . .114
Gear Shifting Light . . . . . . . . . . . . . . 131
General Information
Service and Maintenance . . . . . 351 General Information (cont'd)
Towing . . . . . . . . . . . . . . . . . . . . . . . . 246
Vehicle Care . . . . . . . . . . . . . . . . . . 260
Glove Box . . . . . . . . . . . . . . . . . . . . . . . 98
GM Mobility Reimbursement Program . . . . . . . . . . . . . . . . . . . . . . . 373
H
Halogen Bulbs . . . . . . . . . . . . . . . . . . 288
Hazard Warning Flashers . . . . . . . 159
Head Restraints . . . . . . . . . . . . . . . . . 42
Head-up Display . . . . . . . . . . . . . . . . 142
HeadlampsAiming . . . . . . . . . . . . . . . . . . . . . . . . 288
Automatic . . . . . . . . . . . . . . . . . . . . . 158
Bulb Replacement . . . . . . . . . . . . 288
Daytime RunningLamps (DRL) . . . . . . . . . . . . . . . . 157
Flash-to-Pass . . . . . . . . . . . . . . . . . 157
High-Beam On Light . . . . . . . . . . 135
High/Low Beam Changer . . . . . 157
Lamps On Reminder . . . . . . . . . 136
Heated Rear Seats . . . . . . . . . . . . . . . . . . . . . 54
Steering Wheel . . . . . . . . . . . . . . . 107
Heated and Ventilated Front
Seats . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Heated Mirrors . . . . . . . . . . . . . . . . . . . 33
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