cooling system GMC ACADIA 2020 Owner's Guide

GMC Acadia/Acadia Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-13687875) - 2020 - CRC - 10/28/19
Service and Maintenance 357
Maintenance Schedule
Additional Required
Services - Severe12 000 km/7,500 mi
24 000 km/15,000 mi
36 000 km/22,500 mi
48 000 km/30,000 mi
60 000 km/37,500 mi
72 000 km/45,000 mi
84 000 km/52,500 mi
96 000 km/60,000 mi
108 000 km/67,500 mi
120 000 km/75,000 mi
132 000 km/82,500 mi
144 000 km/90,000 mi
156 000 km/97,500 mi
168 000 km/105,000 mi 180 000 km/112,500 mi
192 000 km/120,000 mi
204 000 km/127,500 mi
216 000 km/135,000 mi
228 000 km/142,500 mi
240 000 km/150,000 mi
Rotate tires and perform Required Services.
Check engine oil level and oil life percentage.
Change engine oil and filter, if needed. Check
engine air filter life percentage and status.
Change engine air filter, if needed.
@ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @
Replace passenger compartment air filter. (1)@ @@@@@
Inspect evaporative control system. (2)@ @@
If the vehicle is not equipped with the engine air
filter life system, replace engine air cleaner
filter. (3)@@@
2.0L Turbo Engine Only: Replace spark plugs.
Inspect spark plug wires and/or boots.@ @
Except 2.0L Turbo Engine: Replace spark plugs.
Inspect spark plug wires and/or boots.@
Change automatic transmission fluid.@@@
Change rear axle fluid, if equipped with AWD. (4)@ @
Drain and fill engine cooling system. (5)@
Visually inspect accessory drive belts. (6)@
Replace brake fluid. (7)
Replace windshield wiper blades. (8)
@ @ @ @ @ @ @ @ @ @
Replace hood and/or body lift support gas
struts. (9)@@
Replace air conditioning desiccant. (10)

GMC Acadia/Acadia Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-13687875) - 2020 - CRC - 10/28/19
358 Service and Maintenance
Footnotes—Maintenance
Schedule Additional Required
Services - Severe
(1) Or every two years, whichever
comes first. More frequent
passenger compartment air filter
replacement may be needed if
driving in areas with heavy traffic,
poor air quality, high dust levels,
or environmental allergens.
Passenger compartment air filter
replacement may also be needed if
there is reduced airflow, window
fogging, or odors. Your GM dealer
can help determine when to replace
the filter.
(2) Visually check all fuel and vapor
lines and hoses for proper
attachment, connection, routing, and
condition.
(3) Or every four years, whichever
comes first. If driving in dusty
conditions, inspect the filter at each
oil change or more often as needed.
See Engine Air Cleaner/Filter 0273. (4)
Do not directly power wash the
transfer case and/or front/rear axle
output seals. High pressure water
can overcome the seals and
contaminate the transfer case fluid.
Contaminated fluid will decrease the
life of the transfer case and/or axles
and should be replaced.
(5) Or every five years, whichever
comes first. See Cooling System
0 275.
(6) Or every 10 years, whichever
comes first. Inspect for fraying,
excessive cracking, or damage;
replace, if needed.
(7) Replace brake fluid every five
years. See Brake Fluid 0282.
(8) Or every 12 months, whichever
comes first. See Wiper Blade
Replacement 0285
(9) Or every 10 years, whichever
comes first. See Gas Strut(s)0286.
(10) Replace air conditioning
desiccant every seven years.Special Application
Services
. Severe Commercial Use
Vehicles Only: Lubricate chassis
components every oil change.
. Have underbody flushing service
performed. See "Underbody
Maintenance" in Exterior Care
0 342.

GMC Acadia/Acadia Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-13687875) - 2020 - CRC - 10/28/19
362 Service and Maintenance
Recommended Fluids, Lubricants, and Parts
Recommended Fluids and Lubricants
UsageFluid/Lubricant
Automatic Transmission DEXRON-VI Automatic Transmission Fluid. Engine Coolant 50/50 mixture of clean, drinkable water and use only DEX-COOL Coolant.
See Cooling System 0275.
Engine Oil Engine oil meeting the dexos1 specification of the proper SAE viscosity
grade. ACDelco dexos1 full synthetic is recommended. See Engine Oil
0 269.
Hood Latch Assembly, Secondary Latch, Pivots, Spring Anchor, and Release Pawl Lubriplate Lubricant Aerosol (GM Part No. 89021668, in
Canada 89021674) or lubricant meeting requirements of NLGI #2,
Category LB or GC-LB.
Hydraulic Brake System DOT 3 Hydraulic Brake Fluid (GM Part No. 19353126, in Canada 19353127).
Key Lock Cylinders, Hood and Door Hinges Multi-Purpose Lubricant, Superlube (GM Part No. 12346241, in
Canada 10953474).
Weatherstrip Conditioning Weatherstrip lubricant (GM Part No. 3634770, in Canada 10953518) or equivalent.
Windshield Washer Automotive windshield washer fluid that meets regional freeze protection requirements.

GMC Acadia/Acadia Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-13687875) - 2020 - CRC - 10/28/19
366 Technical Data
Vehicle Data
Capacities and Specifications
The following approximate capacities are given in metric and English conversions. SeeRecommended Fluids and
Lubricants 0362 for more information.
Application Capacities
Metric English
Air Conditioning Refrigerant For the air conditioning system refrigerant type and charge amount, see the refrigerant label under thehood. See your dealer for more information.
Engine Cooling System* 2.0L L4 Engine 9.0 L 9.5 qt
2.0L L4 Engine with Rear HVAC 10.6 L 11.2 qt
2.5L L4 Engine 9.1 L 9.7 qt
2.5L L4 Engine with Rear HVAC 10.2 L 10.8 qt
3.6L V6 Engine 10.6 L 11.2 qt
3.6L V6 Engine with Rear HVAC 12.0 L 12.7 qt
3.6L V6 Engine with Heavy Duty Cooling System 10.0 L 10.6 qt
3.6L V6 Engine with Rear HVAC and Heavy Duty Cooling
System 12.2 L 12.9 qt

GMC Acadia/Acadia Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-13687875) - 2020 - CRC - 10/28/19
Technical Data 367
ApplicationCapacities
Metric English
Engine Oil with Filter 2.0L L4 Engine 5.0 L 5.3 qt
2.5L L4 Engine (FWD) 4.7 L 5.0 qt
2.5L L4 Engine (AWD) 5.7 L 6.0 qt
3.6L V6 Engine 5.7 L 6.0 qt
Fuel Tank Front-Wheel Drive 73.4 L 19.4 gal
All-Wheel Drive 82.1 L 21.7 gal
Wheel Nut Torque 190 Y140 lb ft
All capacities are approximate. When adding, be sure to fill to the approximate level, as recommended in this
manual. Recheck fluid level after filling.
*Engine cooling system capacity values are based on the entire cooling system and its components.

GMC Acadia/Acadia Denali Owner Manual (GMNA-Localizing-U.S./Canada/-
Mexico-13687875) - 2020 - CRC - 10/28/19
Index 395
Child Restraints (cont'd)Older Children . . . . . . . . . . . . . . . . . . 77
Securing . . . . . . . . . . . . . . . . . . . . 93, 95
Systems . . . . . . . . . . . . . . . . . . . . . . . . 81
Circuit Breakers . . . . . . . . . . . . . . . . 289
Cleaning Exterior Care . . . . . . . . . . . . . . . . . 342
Interior Care . . . . . . . . . . . . . . . . . . 346
Climate Control Systems Dual Automatic . . . . . . . . . . . . . . . 165
Rear . . . . . . . . . . . . . . . . . . . . . . . . . . 169
Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . 110
Cluster, Instrument . . . . . . . . 115, 119
Collision Damage Repair . . . . . . . 377
Compact Spare Tire . . . . . . . . . . . . 334
Compartments
Storage . . . . . . . . . . . . . . . . . . . . . . . . . 98
Compass . . . . . . . . . . . . . . . . . . . . . . . 110
Compressor Kit, Tire Sealant . . . 321
Connected Services Connections . . . . . . . . . . . . . . . . . . 391
Diagnostics . . . . . . . . . . . . . . . . . . . 392
Navigation . . . . . . . . . . . . . . . . . . . . 390
Connections Connected Services . . . . . . . . . . 391
Control
Hill Descent . . . . . . . . . . . . . . . . . . .211 Control (cont'd)
Traction and Electronic
Stability . . . . . . . . . . . . . . . . . . . . . 209
Control Light Hill Descent . . . . . . . . . . . . . . . . . . 131
Control of a Vehicle . . . . . . . . . . . . . 176
Convex Mirrors . . . . . . . . . . . . . . . . . . 31
Coolant Engine Temperature Gauge . . 123
Engine TemperatureWarning Light . . . . . . . . . . . . . . . 133
Cooling . . . . . . . . . . . . . . . . . . . . 165, 169
Cooling System . . . . . . . . . . . . . . . . . 275
Courtesy Lamps . . . . . . . . . . . . . . . . 160
Courtesy Transportation Program . . . . . . . . . . . . . . . . . . . . . . . 376
Cover Cargo . . . . . . . . . . . . . . . . . . . . . . . . . 100
Cruise Control . . . . . . . . . . . . . . . . . . 214 Light . . . . . . . . . . . . . . . . . . . . . . . . . . 136
Cruise Control, Adaptive . . . . . . . . 216
Customer Assistance . . . . . . . . . . . 373
Offices . . . . . . . . . . . . . . . . . . . . . . . . 372
Text Telephone (TTY)Users . . . . . . . . . . . . . . . . . . . . . . . 373
Customer Information
Publications OrderingInformation . . . . . . . . . . . . . . . . . . 379 Customer Satisfaction
Procedure . . . . . . . . . . . . . . . . . . . . . 370
Cybersecurity . . . . . . . . . . . . . . . . . . . 382
D
Damage Repair, Collision . . . . . . . 377
Danger, Warning, and Caution . . . . 3
Data Collection Infotainment System . . . . . . . . . . 383
OnStar . . . . . . . . . . . . . . . . . . . . . . . 383
Data Recorders, Event . . . . . . . . . 382
Daytime Running Lamps (DRL) . . . . . . . . . . . . . . . . . . 157
Defensive Driving . . . . . . . . . . . . . . . 175
Delayed Locking . . . . . . . . . . . . . . . . . 19
Diagnostics Connected Services . . . . . . . . . . 392
Distracted Driving . . . . . . . . . . . . . . . 174
Dome Lamps . . . . . . . . . . . . . . . . . . . 160
Door Ajar Light . . . . . . . . . . . . . . . . . . . . . 136
Delayed Locking . . . . . . . . . . . . . . . . 19
Locks . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Power Locks . . . . . . . . . . . . . . . . . . . . 19
Drive Belt Routing, Engine . . . . . . 369
Drive Systems All-Wheel Drive . . . . . . . . . . 206, 284
Driver Assistance Systems . . . . . 225

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