
GMC Terrain/Terrain Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-12146071) - 2019 - crc - 7/27/18
370 Vehicle Care
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. SeeRecommended
Fluids and Lubricants 0387.
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 tire
dressing, always wipe off any
overspray from all painted
surfaces on the vehicle.
Wheels and Wheel Trim
Use a soft, clean cloth with mild
soap and water to clean the wheels.
After rinsing thoroughly with clean
water, dry with a soft, clean towel.
A wax may then be applied.
Caution
Chrome wheels and chrome
wheel trim may be damaged if the
vehicle is not washed after driving
on roads that have been sprayed
with magnesium chloride or
calcium chloride. These are used
on roads for conditions such as
(Continued)
Caution (Continued)
dust and ice. Always wash the
chrome with soap and water after
exposure.
Caution
To avoid surface damage on
wheels and wheel trim, do not
use strong soaps, chemicals,
abrasive polishes, cleaners,
or brushes. Use only GM
approved cleaners. Do not drive
the vehicle through an automatic
car wash that uses silicone
carbide tire/wheel cleaning
brushes. Damage could occur
and the repairs would not be
covered by the vehicle warranty.
Brake System
Visually inspect brake lines and
hoses for proper attachment,
connections, binding, leaks, cracks,
chafing, etc. Inspect disc brake

GMC Terrain/Terrain Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-12146071) - 2019 - crc - 7/27/18
376 Service and Maintenance
Service and
Maintenance
General Information
General Information . . . . . . . . . . 376
Maintenance Schedule
Maintenance Schedule . . . . . . . 378
Special Application Services
Special ApplicationServices . . . . . . . . . . . . . . . . . . . . 383
Additional Maintenance
and Care
Additional Maintenanceand Care . . . . . . . . . . . . . . . . . . . . 384
Recommended Fluids,
Lubricants, and Parts
Recommended Fluids andLubricants . . . . . . . . . . . . . . . . . . . 387
Maintenance Replacement Parts . . . . . . . . . . . . . . . . . . . . . . . . 388
Maintenance Records
Maintenance Records . . . . . . . . 390
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.

GMC Terrain/Terrain Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-12146071) - 2019 - crc - 7/27/18
384 Service and Maintenance
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.
. 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 0387 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.

GMC Terrain/Terrain Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-12146071) - 2019 - crc - 7/27/18
Service and Maintenance 387
Recommended Fluids, Lubricants, and Parts
Recommended Fluids and Lubricants
UsageFluid/Lubricant
Automatic Transmission DEXRON-VI Automatic Transmission Fluid.
Diesel Exhaust Aftertreatment System Diesel Exhaust Fluid (GM Part No. 19286291, in Canada 88865751) or diesel exhaust fluid that meets ISO 22241-1 or displays the API Diesel
Exhaust Fluid Certification Mark.
Engine Coolant 50/50 mixture of clean, drinkable water and use only DEX-COOL Coolant.
See Cooling System 0301.
Engine Oil (Diesel) Engine oil meeting the dexos2 specification of the proper SAE viscosity
grade. ACDelco dexos2 is recommended. See Engine Oil0294.
Engine Oil (Gasoline) Engine oil meeting the dexos1 specification of the proper SAE viscosity grade. ACDelco dexos1 full synthetic is recommended. See Engine Oil
0 294.
Hood and Door Hinges Multi-Purpose Lubricant, Superlube (GM Part No. 12346241, in Canada 10953474).
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).
Transfer Case (All-Wheel Drive) Transfer Case Fluid (GM Part No. 88900401, in Canada 89021678).

GMC Terrain/Terrain Denali Owner Manual (GMNA-Localizing-U.S./Canada/-
Mexico-12146071) - 2019 - crc - 7/27/18
Index 427
Liftgate . . . . . . . . . . . . . . . . . . . . . . . . . . 42
LightingEntry . . . . . . . . . . . . . . . . . . . . . . . . . 167
Exit . . . . . . . . . . . . . . . . . . . . . . . . . . . 167
Illumination Control . . . . . . . . . . . 166
LED . . . . . . . . . . . . . . . . . . . . . . . . . . 315
Lights
Airbag Readiness . . . . . . . . . . . . . 131
Antilock Brake System(ABS) Warning . . . . . . . . . . . . . . 136
Brake System Warning . . . . . . . 135
Charging System . . . . . . . . . . . . . 133
Check Engine (Malfunction
Indicator) . . . . . . . . . . . . . . . . . . . . 133
Cruise Control . . . . . . . . . . . . . . . . 141
Diesel Exhaust Fluid (DEF) . . . 140
Electric Parking Brake . . . . . . . . 136
Engine Oil Pressure . . . . . . . . . . 139
Flash-to-Pass . . . . . . . . . . . . . . . . . 163
Front Fog Lamp . . . . . . . . . . . . . . 141
High-Beam On . . . . . . . . . . . . . . . . 141
High/Low Beam Changer . . . . . 163
Hill Descent Control . . . . . . . . . . 137
Lane Keep Assist . . . . . . . . . . . . . 137
Low Fuel Warning . . . . . . . . . . . . 140
Seat Belt Reminders . . . . . . . . . . 131
Security . . . . . . . . . . . . . . . . . . . . . . 141 Lights (cont'd)
Service Electric Parking
Brake . . . . . . . . . . . . . . . . . . . . . . . 136
StabiliTrak OFF . . . . . . . . . . . . . . . 138
Tire Pressure . . . . . . . . . . . . . . . . . 139
Tow/Haul Mode . . . . . . . . . . . . . . . 137
Traction Control System
(TCS)/StabiliTrak . . . . . . . . . . . . 138
Traction Off . . . . . . . . . . . . . . . . . . . 138
Wait to Start . . . . . . . . . . . . . . . . . . 139
Locks Automatic Door . . . . . . . . . . . . . . . . . 41
Delayed Locking . . . . . . . . . . . . . . . . 40
Door . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Lockout Protection . . . . . . . . . . . . . . 41
Power Door . . . . . . . . . . . . . . . . . . . . . 40
Safety . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Loss of Control . . . . . . . . . . . . . . . . . 183
Low Fuel Warning Light . . . . . . . . . 140
Lower Anchors and Tethers
for Children (LATCH
System) . . . . . . . . . . . . . . . . . . . . . . . . 98
Lumbar Adjustment . . . . . . . . . . . . . . 61
Front Seats . . . . . . . . . . . . . . . . . . . . . 61
M
MaintenanceRecords . . . . . . . . . . . . . . . . . . . . . . 390 Maintenance and Care
Additional . . . . . . . . . . . . . . . . . . . . . 384
Maintenance Schedule . . . . . . . . . 378 Recommended Fluids andLubricants . . . . . . . . . . . . . . . . . . . 387
Malfunction Indicator Lamp . . . . . 133
Manual Mode . . . . . . . . . . . . . . . . . . . 217
Memory Features . . . . . . . . . . . . . . . . 12
Memory Seats . . . . . . . . . . . . . . . . . . . 62
Messages Engine Power . . . . . . . . . . . . . . . . 152
Vehicle . . . . . . . . . . . . . . . . . . . . . . . 151
Vehicle Speed . . . . . . . . . . . . . . . . 152
Mirrors Automatic Dimming . . . . . . . . . . . . . 52
Automatic DimmingRearview . . . . . . . . . . . . . . . . . . . . . . 52
Convex . . . . . . . . . . . . . . . . . . . . . . . . . 51
Folding . . . . . . . . . . . . . . . . . . . . . . . . . 51
Heated . . . . . . . . . . . . . . . . . . . . . . . . . 51
Manual Rearview . . . . . . . . . . . . . . . 52
Power . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Tilt in Reverse . . . . . . . . . . . . . . . . . . 52
Mirrors, Interior Rearview . . . . . . . . 52
Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . 226 Driver Control . . . . . . . . . . . . . . . . . 226
Monitor System, Tire Pressure . . . . . . . . . . . . . . . . . . . . . . 334

GMC Terrain/Terrain Denali Owner Manual (GMNA-Localizing-U.S./Canada/-
Mexico-12146071) - 2019 - crc - 7/27/18
Index 429
RecommendedFuel . . . . . . . . . . . . . . . . . . . . . . . . . . 260
Recommended Fluids and Lubricants . . . . . . . . . . . . . . . . . . . . . 387
Records Maintenance . . . . . . . . . . . . . . . . . . 390
Recreational Vehicle Towing . . . . 364
Reimbursement Program,
GM Mobility . . . . . . . . . . . . . . . . . . . 399
Remote Keyless Entry (RKE) System . . . . . . . . . . . . . . . . . . . . . . . . . 30
Remote Vehicle Start . . . . . . . . . . . . 36
Replacement Parts Airbags . . . . . . . . . . . . . . . . . . . . . . . . . 91
Maintenance . . . . . . . . . . . . . . . . . . 388
Replacing Airbag System . . . . . . . . 91
Replacing LATCH System
Parts after a Crash . . . . . . . . . . . . 103
Replacing Seat Belt System Parts after a Crash . . . . . . . . . . . . . 78
Reporting Safety Defects
Canadian Government . . . . . . . . 406
General Motors . . . . . . . . . . . . . . . 406
U.S. Government . . . . . . . . . . . . . 405
Restraints
Where to Put . . . . . . . . . . . . . . . . . . . 97
Retained Accessory Power (RAP) . . . . . . . . . . . . . . . . . . 202 Reverse Tilt Mirrors . . . . . . . . . . . . . . 52
Roads
Driving, Wet . . . . . . . . . . . . . . . . . . 187
Roadside Assistance Program . . . . . . . . . . . . . . . . . . . . . . . 399
Roof Sunroof . . . . . . . . . . . . . . . . . . . . . . . . . 55
Roof Rack System . . . . . . . . . . . . . . 111
Rotation, Tires . . . . . . . . . . . . . . . . . . 339
Routing, Engine Drive Belt . . . . . . 394
Running out of Fuel . . . . . . . . . . . . . 267
Running the Vehicle While Parked . . . . . . . . . . . . . . . . . . . . . . . . 206
S
Safety Defects ReportingCanadian Government . . . . . . . . 406
General Motors . . . . . . . . . . . . . . . 406
U.S. Government . . . . . . . . . . . . . 405
Safety Locks . . . . . . . . . . . . . . . . . . . . . 41
Safety System Check . . . . . . . . . . . . 78
Scheduling Appointments . . . . . . . 401
Sealant Kit, Tire . . . . . . . . . . . . . . . . 347
Seat Belts . . . . . . . . . . . . . . . . . . . . . . . 71 Care . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
Extender . . . . . . . . . . . . . . . . . . . . . . . . 77
How to Wear Seat BeltsProperly . . . . . . . . . . . . . . . . . . . . . . . 72 Seat Belts (cont'd)
Lap-Shoulder Belt . . . . . . . . . . . . . . 74
Reminders . . . . . . . . . . . . . . . . . . . . 131
Replacing after a Crash . . . . . . . . 78
Use During Pregnancy . . . . . . . . . . 77
Seats Adjustment, Front . . . . . . . . . . . . . . . 60
Folding Seatback . . . . . . . . . . . . . . . 66
Head Restraints . . . . . . . . . . . . . . . . 58
Heated and Ventilated Front . . . . 65
Heated, Rear . . . . . . . . . . . . . . . . . . . 70
Lumbar Adjustment, Front . . . . . . 61
Memory . . . . . . . . . . . . . . . . . . . . . . . . . 62
Power Adjustment, Front . . . . . . . 60
Rear . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Reclining Seatbacks . . . . . . . . . . . . 61
Securing Child Restraints . . . . . . . . . . . . . . . . 104, 106
Security Light . . . . . . . . . . . . . . . . . . . . . . . . . . 141
OnStar . . . . . . . . . . . . . . . . . . . . . . . .411
Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . 48
Vehicle Alarm . . . . . . . . . . . . . . . . . . . 48
Service . . . . . . . . . . . . . . . . . . . . . . . . . 176 Accessories andModifications . . . . . . . . . . . . . . . . 286
Climate Control System . . . . . . . 170
Doing Your Own Work . . . . . . . . 286