2021 GMC TERRAIN fluids

GMC Terrain/Terrain Denali Owner Manual(GMNA-Localizing-U.S./Canada/
Mexico-14420055) - 2021 - CRC - 11/13/20
324 Vehicle Care
.Aftermarket appearance caps or covers
while the lamps are illuminated, due to
excessive heat generated
Caution
Failure to clean lamps properly can cause
damage to the lamp cover that would
not be covered by the vehicle warranty.
Caution
Using wax on low gloss black finish
stripes can increase the gloss level and
create a non-uniform finish. Clean low
gloss stripes with soap and water only.
Air Intakes
Clear debris from the air intakes, between
the hood and windshield, when washing the
vehicle.
Shutter System
The vehicle may have a shutter system
designed to help improve fuel economy.
Keep the shutter system clear of debris,
snow and ice. If the check engine light is
activated, please check to see if the shutter
system is clear of debris, snow or ice.
Windshield and Wiper Blades
Clean the outside of the windshield with
glass cleaner.
Clean rubber blades using a lint-free cloth or
paper towel soaked with windshield washer
fluid or a mild detergent. Wash the
windshield thoroughly when cleaning theblades. Bugs, road grime, sap, and a buildup
of vehicle wash/wax treatments may cause
wiper streaking.
Replace the wiper blades if they are worn or
damaged. Damage can be caused by
extreme dusty conditions, sand, salt, heat,
sun, snow, and ice.
Weatherstrips
Apply weatherstrip lubricant to
weatherstrips to make them last longer, seal
better, and not stick or squeak. Lubricate
weatherstrips at least once a year. Hot, dry
climates may require more frequent
application. Black marks from rubber
material on painted surfaces can be removed
by rubbing with a clean cloth. See
Recommended Fluids and Lubricants
0339.
Tires
Use a stiff brush with tire cleaner to clean
the tires.
Caution
Using petroleum-based tire dressing
products on the vehicle may damage the
paint finish and/or tires. When applying a
(Continued)

GMC Terrain/Terrain Denali Owner Manual(GMNA-Localizing-U.S./Canada/
Mexico-14420055) - 2021 - CRC - 11/13/20
330 Service and Maintenance
Service and Maintenance
General Information
General Information . . . . . . . . . . . . . . . . . . . 330
Maintenance Schedule
Maintenance Schedule . . . . . . . . . . . . . . . . . 331
Special Application Services
Special Application Services . . . . . . . . . . . . 336
Additional Maintenance and Care
Additional Maintenance and Care . . . . . 336
Recommended Fluids, Lubricants, and
Parts
Recommended Fluids andLubricants . . . . . . . . . . . . . . . . . . . . . . . . . . . 339
Maintenance Replacement Parts . . . . . . 340
Maintenance Records
Maintenance Records . . . . . . . . . . . . . . . . . . 341
General Information
Your vehicle is an important investment.
This section describes the required
maintenance for the vehicle. Follow this
schedule to help protect against major repair
expenses resulting from neglect or
inadequate maintenance. It may also help to
maintain the value of the vehicle if it is
sold. It is the responsibility of the owner to
have all required maintenance performed.
Your dealer has trained technicians who can
perform required maintenance using genuine
replacement parts. They have up-to-date
tools and equipment for fast and accurate
diagnostics. Many dealers have extended
evening and Saturday hours, courtesy
transportation, and online scheduling to
assist with service needs.
Your dealer recognizes the importance of
providing competitively priced maintenance
and repair services. With trained technicians,
the dealer is the place for routine
maintenance such as oil changes and tire
rotations and additional maintenance items
like tires, brakes, batteries, and wiper blades.
Caution
Damage caused by improper maintenance
can lead to costly repairs and may not be
covered by the vehicle warranty.
Maintenance intervals, checks,
inspections, recommended fluids, and
lubricants are important to keep the
vehicle in good working condition.
Do not have chemical flushes that are not
approved by GM performed on the
vehicle. The use of flushes, solvents,
cleaners, or lubricants that are not
approved by GM could damage the
vehicle, requiring expensive repairs that
are not covered by the vehicle warranty.
The Tire Rotation and Required Services are
the responsibility of the vehicle owner. It is
recommended to have your dealer perform
these services every 12 000 km/7,500 mi.
Proper vehicle maintenance helps to keep
the vehicle in good working condition,
improves fuel economy, and reduces vehicle
emissions.

GMC Terrain/Terrain Denali Owner Manual(GMNA-Localizing-U.S./Canada/
Mexico-14420055) - 2021 - CRC - 11/13/20
Service and Maintenance 337
.Trained dealer technicians have the
diagnostic equipment to test the battery
and ensure that the connections and
cables are corrosion-free.
Belts
.Belts may need replacing if they squeak
or show signs of cracking or splitting.
.Trained dealer technicians have access to
tools and equipment to inspect the belts
and recommend adjustment or
replacement when necessary.
Brakes
Brakes stop the vehicle and are crucial to
safe driving.
.Signs of brake wear may include chirping,
grinding, or squealing noises, or difficulty
stopping.
.Trained dealer technicians have access to
tools and equipment to inspect the brakes
and recommend quality parts engineered
for the vehicle.
Fluids
Proper fluid levels and approved fluids
protect the vehicle’s systems and
components. See Recommended Fluids and
Lubricants 0339 for GM approved fluids.
.Engine oil and windshield washer fluid
levels should be checked at every fuel fill.
.Instrument cluster lights may come on to
indicate that fluids may be low and need
to be filled.
Hoses
Hoses transport fluids and should be
regularly inspected to ensure that there are
no cracks or leaks. With a multi-point
inspection, your dealer can inspect the hoses
and advise if replacement is needed.
Lamps
Properly working headlamps, taillamps, and
brake lamps are important to see and be
seen on the road.
.Signs that the headlamps need attention
include dimming, failure to light, cracking,
or damage. The brake lamps need to be
checked periodically to ensure that they
light when braking.
.With a multi-point inspection, your dealer
can check the lamps and note any
concerns. Shocks and Struts
Shocks and struts help aid in control for a
smoother ride.
.Signs of wear may include steering wheel
vibration, bounce/sway while braking,
longer stopping distance, or uneven
tire wear.
.As part of the multi-point inspection,
trained dealer technicians can visually
inspect the shocks and struts for signs of
leaking, blown seals, or damage, and can
advise when service is needed.
Tires
Tires need to be properly inflated, rotated,
and balanced. Maintaining the tires can save
money and fuel, and can reduce the risk of
tire failure.
.Signs that the tires need to be replaced
include three or more visible treadwear
indicators; cord or fabric showing through
the rubber; cracks or cuts in the tread or
sidewall; or a bulge or split in the tire.
.Trained dealer technicians can inspect and
recommend the right tires. Your dealer
can also provide tire/wheel balancing
services to ensure smooth vehicle
operation at all speeds. Your dealer sells
and services name brand tires.

GMC Terrain/Terrain Denali Owner Manual(GMNA-Localizing-U.S./Canada/
Mexico-14420055) - 2021 - CRC - 11/13/20
Service and Maintenance 339
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 0267.
Engine Oil Engine oil meeting the dexos1 specification of the proper SAE viscosity grade. ACDelco
dexos1 full synthetic is recommended. See Engine Oil0262.
Hood and Door Hinges, and Key Lock Cylinders Multi-Purpose Lubricant. See your dealer. Hood Latch Assembly, Secondary Latch, Pivots, Spring Anchor, and Release Pawl Lubricant meeting requirements of NLGI #2, Category LB or GC-LB.
Hydraulic Brake System DOT 3 Hydraulic Brake Fluid.
Rear Axle (All-Wheel Drive) See your dealer.
Transfer Case (All-Wheel Drive) Transfer Case Fluid. See your dealer. Windshield Washer Automotive windshield washer fluid that meets regional freeze protection requirements.

GMC Terrain/Terrain Denali Owner Manual(GMNA-Localizing-U.S./Canada/-
Mexico-14420055) - 2021 - CRC - 11/13/20
Index 371
Lower Anchors and Tethers forChildren (LATCH System) . . . . . . . . . . . . . . . . 63
Lumbar Adjustment . . . . . . . . . . . . . . . . . . . . . . . .32 Front Seats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
M
MaintenanceRecords . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 341
Maintenance and Care Additional . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 336
Maintenance Schedule . . . . . . . . . . . . . . . . . . . . 331 Recommended Fluids and
Lubricants . . . . . . . . . . . . . . . . . . . . . . . . . . . . 339
Malfunction Indicator Lamp . . . . . . . . . . . . . . . 93
Manual Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . 211
Map Data Updates . . . . . . . . . . . . . . . . . . . . . . . 149
Maps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 141
Media Avoiding Untrusted Devices . . . . . . . . . . . . 134
Memory Seats . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33
Messages Engine Power . . . . . . . . . . . . . . . . . . . . . . . . . . 108
Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108
Vehicle Speed . . . . . . . . . . . . . . . . . . . . . . . . . . 108
Mirrors Automatic Dimming . . . . . . . . . . . . . . . . . . . . 25
Automatic Dimming Rearview . . . . . . . . . . 25
Convex . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 Mirrors (cont'd)
Folding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Heated . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Manual Rearview . . . . . . . . . . . . . . . . . . . . . . . 25
Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Tilt in Reverse . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Mirrors, Interior Rearview . . . . . . . . . . . . . . . . . .25
Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .218
Driver Control . . . . . . . . . . . . . . . . . . . . . . . . . 218
Monitor System, Tire Pressure . . . . . . . . . . . 294
Multi-band Antenna . . . . . . . . . . . . . . . . . . . . . . 133
N
Navigation Connected Services . . . . . . . . . . . . . . . . . . . . 362
Destination . . . . . . . . . . . . . . . . . . . . . . . . . . . . 142
Using the System . . . . . . . . . . . . . . . . . . . . . . 138
Navigation Symbols . . . . . . . . . . . . . . . . . . . . . . 141
Net, Convenience . . . . . . . . . . . . . . . . . . . . . . . . . 76
New Vehicle Break-In . . . . . . . . . . . . . . . . . . . . 199
O
Odometer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90 Trip . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90
Off-Road . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 190 Driving . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 190
Recovery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 189
Oil Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 262 Oil (cont'd)
Engine Oil Life System . . . . . . . . . . . . . . . . . 264
Pressure Light . . . . . . . . . . . . . . . . . . . . . . . . . . 98
Older Children, Restraints . . . . . . . . . . . . . . . . . .57
Online Owner Center . . . . . . . . . . . . . . . . . . . . 348
OnStar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 356
OnStar Additional Information . . . . . . . . . . . 358
OnStar Emergency . . . . . . . . . . . . . . . . . . . . . . . 358
OnStar Overview . . . . . . . . . . . . . . . . . . . . . . . . . 357
OnStar Security . . . . . . . . . . . . . . . . . . . . . . . . . . 358
OnStar System . . . . . . . . . . . . . . . . . . . . . . 137, 148
Operation Fog Lamps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119
Outlets Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
Overheating, Engine . . . . . . . . . . . . . . . . . . . . . 270
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .124
Instrument Panel . . . . . . . . . . . . . . . . . . . . . . . . 4
P
ParkShifting Into . . . . . . . . . . . . . . . . . . . . . . . . . . . 204
Shifting Out of . . . . . . . . . . . . . . . . . . . . . . . . 205
Park Assist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 232
Parking Brake and P (Park) Mechanism
Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 274
Extended . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 207

GMC Terrain/Terrain Denali Owner Manual(GMNA-Localizing-U.S./Canada/-
Mexico-14420055) - 2021 - CRC - 11/13/20
372 Index
Parking (cont'd)Over Things That Burn . . . . . . . . . . . . . . . . . 207
Parking or Backing Assistance Systems . . . . . . . . . . . . . . . . . . . . 232
Passenger Airbag Status Indicator . . . . . . . . . 92
Passenger Compartment Air Filter . . . . . . . .182
Passenger Sensing System . . . . . . . . . . . . . . . . .52
Pedestrian Ahead Indicator . . . . . . . . . . . . . . . 97
Perchlorate Materials Requirements, California . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 258
Personalization Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108
Phone Apple CarPlay and Android Auto . . . . . . . 160
Bluetooth . . . . . . . . . . . . . . . . . . . . . . . . . . 155, 156
Port
USB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134
Positioning Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 148
Power Door Locks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Mirrors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Outlets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
Protection, Battery . . . . . . . . . . . . . . . . . . . . . 122
Retained Accessory (RAP) . . . . . . . . . . . . . . 204
Seat Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . 31
Windows . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Pregnancy, Using Seat Belts . . . . . . . . . . . . . . 46 Privacy
Vehicle Data Recording . . . . . . . . . . . . . . . . 355
Problems with Route Guidance . . . . . . . . . . 149
Program Courtesy Transportation . . . . . . . . . . . . . . . 351
Prohibited Fuels . . . . . . . . . . . . . . . . . . . . . . . . . 246
Proposition 65 Warning, California . . . . . . . . . . . . . . . . . . . . .258, 273, 316, Back Cover
Publication Ordering Information . . . . . . . . 353
R
Radio HD Radio Technology . . . . . . . . . . . . . . . . . . 132
Radio Data System (RDS) . . . . . . . . . . . . . . . . . 132
Radio Frequency Statement . . . . . . . . . . . . . . 354
Radio Reception . . . . . . . . . . . . . . . . . . . . . . . . . . 133
Radios AM-FM Radio . . . . . . . . . . . . . . . . . . . . . . . . . . 130
Satellite . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133
Reading Lamps . . . . . . . . . . . . . . . . . . . . . . . . . . 120
Rear Seats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37
Heated . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Rear Vision Camera (RVC) . . . . . . . . . . . . . . . . 232
Rear Window Washer/Wiper . . . . . . . . . . . . . 80
Rearview Mirrors . . . . . . . . . . . . . . . . . . . . . . . . . .25 Automatic Dimming . . . . . . . . . . . . . . . . . . . . 25
Reclining Seatbacks . . . . . . . . . . . . . . . . . . . . . . . .32 Recognition
Voice . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150
Recommended Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 246
Recommended Fluids and Lubricants . . . . . 339
Records Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . 341
Recreational Vehicle Towing . . . . . . . . . . . . . 320
Reimbursement Program, GM Mobility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 349
Remote Keyless Entry (RKE) System . . . . . . . .7
Remote Vehicle Start . . . . . . . . . . . . . . . . . . . . . . 13
Replacement Parts
Airbags . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . 340
Replacing Airbag System . . . . . . . . . . . . . . . . . . .57
Replacing LATCH System Parts after a
Crash . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
Replacing Seat Belt System Parts after a Crash . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Reporting Safety Defects
Canadian Government . . . . . . . . . . . . . . . . . 354
General Motors . . . . . . . . . . . . . . . . . . . . . . . . 355
U.S. Government . . . . . . . . . . . . . . . . . . . . . . . 354
Restraints
Where to Put . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
Retained Accessory Power (RAP) . . . . . . . . . 204
Reverse Tilt Mirrors . . . . . . . . . . . . . . . . . . . . . . . .25