cooling GMC ACADIA 2021 Owner's Guide

GMC Acadia/Acadia Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-14608671) - 2021 - CRC - 10/26/20
Service and Maintenance 351
Footnotes—Maintenance Schedule
Additional Required Services - Severe
(1) 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
0 279.
(2) 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.
(3) Visually check all fuel and vapor lines
and hoses for proper attachment,
connection, routing, and condition.
(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 0281.
(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 0287.
(8) Or every 12 months, whichever comes
first. See Wiper Blade Replacement 0290
(9) Or every 10 years, whichever comes first.
See Gas Strut(s) 0291.
(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 0337.
Additional Maintenance
and Care
Your vehicle is an important investment and
caring for it properly may help to avoid
future costly repairs. To maintain vehicle
performance, additional maintenance
services may be required.
It is recommended that your dealer perform
these services —their trained dealer
technicians know your vehicle best. Your
dealer can also perform a thorough
assessment with a multi-point inspection to
recommend when your vehicle may need
attention.
The following list is intended to explain the
services and conditions to look for that may
indicate services are required.
Battery
The 12-volt battery supplies power to start
the engine and operate any additional
electrical accessories.
.To avoid break-down or failure to start
the vehicle, maintain a battery with full
cranking power.

GMC Acadia/Acadia Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-14608671) - 2021 - CRC - 10/26/20
354 Service and Maintenance
Recommended Fluids, Lubricants, and Parts
Recommended Fluids and Lubricants
Fluids and lubricants identified below by name or specification, including fluids or lubricants not listed here, can be obtained from your dealer.Usage Fluid/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 0281.
Engine Oil Engine oil meeting the dexos1 specification of the proper SAE viscosity grade. ACDelco
dexos1 full synthetic is recommended. See Engine Oil0276.
Hood Latch Assembly, Secondary Latch, Pivots, Spring Anchor, and Release Pawl Lubriplate Lubricant Aerosol or lubricant meeting requirements of NLGI #2, Category LB
or GC-LB.
Hydraulic Brake System DOT 3 Hydraulic Brake Fluid.
Key Lock Cylinders, Hood and Door Hinges Multi-Purpose Lubricant, Superlube. See your dealer. Windshield Washer Automotive windshield washer fluid that meets regional freeze protection requirements.

GMC Acadia/Acadia Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-14608671) - 2021 - CRC - 10/26/20
Technical Data 359
Vehicle Data
Capacities and Specifications
The following approximate capacities are given in metric and English conversions. SeeRecommended Fluids and Lubricants0354 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 the hood. See yourdealer for more information.
Engine Cooling System*
I2.0L L4 Engine 9.0 L 9.5 qt
I2.0L L4 Engine with Rear HVAC 10.6 L 11.2 qt
I2.5L L4 Engine 9.1 L 9.7 qt
I2.5L L4 Engine with Rear HVAC 10.2 L 10.8 qt
I3.6L V6 Engine 10.6 L 11.2 qt

GMC Acadia/Acadia Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-14608671) - 2021 - CRC - 10/26/20
360 Technical Data
ApplicationCapacities
Metric English
I3.6L V6 Engine with Rear HVAC 12.0 L
12.7 qt
I3.6L V6 Engine with Heavy Duty Cooling System 10.5 L
11.1 qt
I3.6L V6 Engine with Rear HVAC and Heavy Duty Cooling System 12.2 L
12.9 qt
Engine Oil with Filter I2.0L L4 Engine 5.0 L
5.3 qt
I2.5L L4 Engine 4.7 L
5.0 qt
I3.6L V6 Engine 5.7 L
6.0 qt
Fuel Tank IFront-Wheel Drive 73.4 L
19.4 gal
IAll-Wheel Drive 82.1 L
21.7 gal

GMC Acadia/Acadia Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-14608671) - 2021 - CRC - 10/26/20
Technical Data 361
ApplicationCapacities
Metric English
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.
Engine Specifications
Engine VIN CodeTransmission Spark Plug Gap
2.0L L4 Engine (LSY) 4Automatic 0.65–0.75 mm (0.026–0.030 in)
2.5L L4 Engine (LCV) AAutomatic 0.95–1.10 mm (0.037–0.043 in)
3.6L V6 Engine (LGX) SAutomatic 0.80–0.90 mm (0.031–0.035 in)
Spark plug gaps are preset by the manufacturer. Re-gapping the spark plug is not recommended and can damage the spark plug.

GMC Acadia/Acadia Denali Owner Manual (GMNA-Localizing-U.S./Canada/-
Mexico-14608671) - 2021 - CRC - 10/26/20
Index 385
Climate Control SystemsDual Automatic . . . . . . . . . . . . . . . . . . . . . . . . 192
Rear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 196
Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93
Cluster, Instrument . . . . . . . . . . . . . . . . . . 97, 100
Collision Damage Repair . . . . . . . . . . . . . . . . . 369
Compact Spare Tire . . . . . . . . . . . . . . . . . . . . . . . 331
Compartments Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
Compass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
Compressor Kit, Tire Sealant . . . . . . . . . . . . . 320
Connected Services Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . 381
Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . 382
Navigation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 380
Connections
Connected Services . . . . . . . . . . . . . . . . . . . . 381
Control Hill Descent . . . . . . . . . . . . . . . . . . . . . . . . . . . . 228
Traction and Electronic Stability . . . . . . . 226
Control Light
Hill Descent . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110
Control of a Vehicle . . . . . . . . . . . . . . . . . . . . . 201
Controls Steering Wheel . . . . . . . . . . . . . . . . . . . . . . . . 140
Convex Mirrors . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 Coolant
Engine Temperature Gauge . . . . . . . . . . . . 104
Engine Temperature Warning Light . . . . . 112
Cooling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .192, 196
Cooling System . . . . . . . . . . . . . . . . . . . . . . . . . . .281
Courtesy Lamps . . . . . . . . . . . . . . . . . . . . . . . . . . . 135
Courtesy Transportation Program . . . . . . . . 368
Coverage Explanations . . . . . . . . . . . . . . . . . . . 163
Cruise Control . . . . . . . . . . . . . . . . . . . . . . . . . . . 230 Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115
Cruise Control, Adaptive . . . . . . . . . . . . . . . . . 232
Customer Assistance . . . . . . . . . . . . . . . . . . . . . 365
Offices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 365
Text Telephone (TTY) Users . . . . . . . . . . . . 365
Customer Information Publications Ordering Information . . . . . . 371
Customer Satisfaction Procedure . . . . . . . . . 363
Cybersecurity . . . . . . . . . . . . . . . . . . . . . . . . . . . . 373
D
Damage Repair, Collision . . . . . . . . . . . . . . . . . 369
Danger, Warning, and Caution . . . . . . . . . . . . . .2
Data Collection Infotainment System . . . . . . . . . . . . . . . . . . 374
OnStar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 374
Data Recorders, Event . . . . . . . . . . . . . . . . . . . 373
Database Coverage Explanations . . . . . . . . . 163 Daytime Running Lamps (DRL) . . . . . . . . . . . . 133
Defensive Driving . . . . . . . . . . . . . . . . . . . . . . . . 201
Delayed Locking . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Destination . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 156
Diagnostics
Connected Services . . . . . . . . . . . . . . . . . . . . 382
Distracted Driving . . . . . . . . . . . . . . . . . . . . . . . . 200
Dome Lamps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135
Door
Ajar Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115
Delayed Locking . . . . . . . . . . . . . . . . . . . . . . . . . 17
Locks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Power Locks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Drive Belt Routing, Engine . . . . . . . . . . . . . . . 362
Drive Systems All-Wheel Drive . . . . . . . . . . . . . . . . . . . 224, 289
Driver Teen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 180
Driver Assistance Systems . . . . . . . . . . . . . . . 239
Driver Information Center (DIC) . . . . . . . 115, 117
Driver Mode Control . . . . . . . . . . . . . . . . . . . . . 228
Driving Assistance Systems . . . . . . . . . . . . . . . . . . . . 245
Better Fuel Economy . . . . . . . . . . . . . . . . . . . 200
Characteristics and Towing Tips . . . . . . . . 256
Defensive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 201
Hill and Mountain Roads . . . . . . . . . . . . . . 207
If the Vehicle is Stuck . . . . . . . . . . . . . . . . . 209

GMC Acadia/Acadia Denali Owner Manual (GMNA-Localizing-U.S./Canada/-
Mexico-14608671) - 2021 - CRC - 10/26/20
386 Index
Driving (cont'd)Impaired . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 201
Loss of Control . . . . . . . . . . . . . . . . . . . . . . . . 203
Off-Road . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 203
Off-Road Recovery . . . . . . . . . . . . . . . . . . . . . 203
Vehicle Load Limits . . . . . . . . . . . . . . . . . . . . 209
Wet Roads . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 207
Winter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 208
Dual Automatic Climate Control System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 192
E
Electric Brake Boost . . . . . . . . . . . . . . . . . . . . . . 224
Electric Parking Brake . . . . . . . . . . . . . . . . . . . . 224
Electric Parking Brake Light . . . . . . . . . . . . . . 109
Electrical Equipment, Add-On . . . . . . . . . . . . 266
Electrical SystemEngine Compartment Fuse Block . . . . . . . 293
Fuses and Circuit Breakers . . . . . . . . . . . . . 293
Instrument Panel Fuse Block . . . . . . . . . . . 296
Overload . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 292
Rear Compartment Fuse Block . . . . . . . . . 298
Emergency OnStar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 376
Engine Air Cleaner/Filter . . . . . . . . . . . . . . . . . . . . . . 279
Check Light (Malfunction Indicator) . . . . 107
Compartment Overview . . . . . . . . . . . . . . . . . 271 Engine (cont'd)
Coolant Temperature Gauge . . . . . . . . . . . 104
Coolant Temperature Warning Light . . . . 112
Cooling System . . . . . . . . . . . . . . . . . . . . . . . . 281
Drive Belt Routing . . . . . . . . . . . . . . . . . . . . . 362
Exhaust . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 219
Heater . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 216
Oil Life System . . . . . . . . . . . . . . . . . . . . . . . . 278
Oil Pressure Light . . . . . . . . . . . . . . . . . . . . . . . 113
Overheating . . . . . . . . . . . . . . . . . . . . . . . . . . . 285
Power Messages . . . . . . . . . . . . . . . . . . . . . . . 123
Running While Parked . . . . . . . . . . . . . . . . . 220
Starting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 214
Engine Air Filter Life System . . . . . . . . . . . . . 279
Engine Oil Temperature Gauge . . . . . . . . . . . . . . . . . . . . 103
Entry Lighting . . . . . . . . . . . . . . . . . . . . . . . . . . . 136
Equipment, Towing . . . . . . . . . . . . . . . . . . . . . . 262
Event Data Recorders . . . . . . . . . . . . . . . . . . . . 373
Exit Lighting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 136
Extended Parking . . . . . . . . . . . . . . . . . . . . . . . . 219
Extender, Seat Belt . . . . . . . . . . . . . . . . . . . . . . . .53
Exterior Lamp Controls . . . . . . . . . . . . . . . . . . . . 131
Exterior Lamps Off Reminder . . . . . . . . . . . . . 132
Exterior Lighting Battery Saver . . . . . . . . . . . 137
F
Filter, Engine Air Cleaner . . . . . . . . . . . . . . . . . . . . . 279
Flash-to-Pass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132
Flashers, Hazard Warning . . . . . . . . . . . . . . . . .134
Flat Tire . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 319 Changing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 326
Floor Mats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 343
Fluid Automatic Transmission . . . . . . . . . . . . . . . 279
Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 287
Washer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 286
Fog Lamps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .134
Folding Mirrors . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
Forward Collision Alert (FCA) System . . . . 245
Frequency Statement Radio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 371
Front Fog Lamp Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114
Front Pedestrian Braking (FPB) System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 248
Front Seats Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Heated and Ventilated . . . . . . . . . . . . . . . . . . 41
Fuel Additives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 254
Economy, Driving for Better . . . . . . . . . . . 200
Filling a Portable Fuel Container . . . . . . . 256