
GMC Terrain/Terrain Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-12146071) - 2019 - crc - 7/27/18
378 Service and Maintenance
Maintenance
Schedule
Owner Checks and Services
At Each Fuel Stop
.Check the engine oil level. See
Engine Oil 0294.
Once a Month
. Check the tire inflation
pressures. See Tire Pressure
0 332.
. Inspect the tires for wear. See
Tire Inspection 0339.
. Check the windshield washer
fluid level. See Washer Fluid
0 307.
Engine Oil Change
When the CHANGE ENGINE OIL
SOON message displays, have the
engine oil and filter changed within
the next 1 000 km/600 mi. If driven
under the best conditions, the
engine oil life system may not
indicate the need for vehicle service
for up to a year. The engine oil and filter must be changed at least once
a year and the oil life system must
be reset. Your trained dealer
technician can perform this work.
If the engine oil life system is reset
accidentally, service the vehicle
within 5 000 km/3,000 mi since the
last service. Reset the oil life
system when the oil is changed.
See
Engine Oil Life System 0298.
On vehicles with diesel engines, it is
recommended to drain the diesel
fuel filter of water when the oil is
changed or when the WATER IN
FUEL CONTACT SERVICE
message displays.
Air Conditioning Desiccant
(Replace Every Seven Years)
The air conditioning system requires
maintenance every seven years.
This service requires replacement of
the desiccant to help the longevity
and efficient operation of the air
conditioning system. This service
can be complex. See your dealer.
Tire Rotation and Required
Services Every 12 000 km/
7,500 mi
Rotate the tires, if recommended for
the vehicle, and perform the
following services. See Tire
Rotation 0339.
. Check engine oil level and oil
life percentage. If needed,
change engine oil and filter, and
reset oil life system.
See Engine Oil 0294 and
Engine Oil Life System 0298.
. Check engine coolant level. See
Cooling System 0301.
. Check windshield washer fluid
level. See Washer Fluid 0307.
Check tire inflation pressures.
See Tire Pressure 0332.
. Inspect tire wear. See Tire
Inspection 0339.
. Visually check for fluid leaks.
. Inspect engine air cleaner filter.
See Engine Air Cleaner/Filter
0 299.

GMC Terrain/Terrain Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-12146071) - 2019 - crc - 7/27/18
380 Service and Maintenance
Maintenance Schedule
Additional Required
Services - Normal12 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.
Drain the diesel fuel filter of water. (Diesel Only)@ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @
Replace passenger compartment air filter. (1)@ @@@@@
Inspect evaporative control system. (2)@ @@
Diesel Engine Only: Replace fuel filter. (3)@@@@@
Replace engine air cleaner filter. (4)@ @@
Replace spark plugs. Inspect spark plug wires.@ @
Drain and fill engine cooling system. (5)@
Visually inspect accessory drive belts. (6)@
Diesel Engine Only: Replace timing belt, idler
pulley, and tensioner.@
Replace brake fluid. (7)
Replace windshield wiper blades. (8)
@ @ @ @ @ @ @ @ @ @
Replace hood and/or body lift support gas struts.@ @

GMC Terrain/Terrain Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-12146071) - 2019 - crc - 7/27/18
382 Service and Maintenance
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.
Drain the diesel fuel filter of water. (Diesel Only)@ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @
Replace passenger compartment air filter. (1)@ @@@@@
Inspect evaporative control system. (2)@ @@
Diesel Engine Only: Replace fuel filter. (3)@@@@@
Replace engine air cleaner filter. (4)@ @@
Change automatic transmission fluid.@@@
Replace spark plugs. Inspect spark plug wires.@ @
Drain and fill engine cooling system. (5)@
Visually inspect accessory drive belts. (6)@
Diesel Engine Only: Replace timing belt, idler
pulley, and tensioner.@
Replace brake fluid. (7)
Replace windshield wiper blades. (8)
@ @ @ @ @ @ @ @ @ @
Replace hood and/or body lift support gas struts.@ @

GMC Terrain/Terrain Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-12146071) - 2019 - crc - 7/27/18
Service and Maintenance 385
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. Vehicle Care
To help keep the vehicle looking like
new, vehicle care products are
available from your dealer. For
information on how to clean and
protect the vehicle’s interior and
exterior, see
Interior Care 0371 and
Exterior Care 0367.
Wheel Alignment
Wheel alignment is critical for
ensuring that the tires deliver
optimal wear and performance.
. Signs that the alignment may
need to be adjusted include
pulling, improper vehicle
handling, or unusual tire wear.
. Your dealer has the required
equipment to ensure proper
wheel alignment.

GMC Terrain/Terrain Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-12146071) - 2019 - crc - 7/27/18
400 Customer Information
.Lock-Out Service: Service to
unlock the vehicle if you are
locked out. A remote unlock may
be available if you have OnStar.
For security reasons, the driver
must present identification
before this service is given.
. Emergency Tow from a Public
Road or Highway: Tow to the
nearest GMC dealer for warranty
service, or if the vehicle was in a
crash and cannot be driven.
Assistance is not given when the
vehicle is stuck in the sand,
mud, or snow.
. Flat Tire Change: Service to
change a flat tire with the spare
tire. The spare tire, if equipped,
must be in good condition and
properly inflated. It is the owner's
responsibility for the repair or
replacement of the tire if it is not
covered by the warranty.
. Battery Jump Start: Service to
jump start a dead battery.
. Trip Interruption Benefits and
Assistance: If your trip is
interrupted due to a warranty event, incidental expenses may
be reimbursed within the
Powertrain warranty period.
Items considered are reasonable
and customary hotel, meals,
rental car, or a vehicle being
delivered back to the customer,
up to 500 miles.
Services Not Included in
Roadside Assistance
.
Impound towing caused by
violation of any laws
. Legal fines
. Mounting, dismounting,
or changing of snow tires,
chains, or other traction devices
Service is not provided if a vehicle
is in an area that is not accessible
to the service vehicle or is not a
regularly traveled or maintained
public road, which includes ice and
winter roads. Off-road use is not
covered.
Services Specific to
Canadian-Purchased Vehicles
. Fuel Delivery: Reimbursement
is up to 7 L. Diesel fuel delivery
may be restricted. Propane and
other fuels are not provided
through this service.
. Lock-Out Service: Vehicle
registration is required.
. Trip Interruption Benefits and
Assistance: Must be over
150 km from where your trip was
started to qualify.
Pre-authorization, original
detailed receipts, and a copy of
the repair orders are required.
Once authorization has been
received, the Roadside
Assistance advisor will help to
make arrangements and explain
how to receive payment.
. Alternative Service: If
assistance cannot be provided
right away, the Roadside
Assistance advisor may give
permission to get local
emergency road service. You will
receive payment, up to $100,

GMC Terrain/Terrain Denali Owner Manual (GMNA-Localizing-U.S./Canada/-
Mexico-12146071) - 2019 - crc - 7/27/18
Index 421
IndexA
About Driving the Vehicle . . . . . . . . . 3
Accessories andModifications . . . . . . . . . . . . . . . . . . 286
Accessory Power . . . . . . . . . . . . . . . 202
Adaptive Cruise Control . . . . . . . . 232
Add-On Electrical Equipment . . . 282
Additional Information
OnStar . . . . . . . . . . . . . . . . . . . . . . . .411
Additional Maintenance
and Care . . . . . . . . . . . . . . . . . . . . . . 384
Adjustments Lumbar, Front Seats . . . . . . . . . . . . 61
Air Cleaner/Filter, Engine . . . . . . . 299
Air Conditioning . . . . . . . . . . . 170, 172
Air Filter, Passenger
Compartment . . . . . . . . . . . . . . . . . 175
Air Vents . . . . . . . . . . . . . . . . . . . . . . . 175
Airbag System Check . . . . . . . . . . . . . . . . . . . . . . . . . . 90
How Does an AirbagRestrain? . . . . . . . . . . . . . . . . . . . . . 83
Passenger Sensing System . . . . 85
What Makes an Airbag Inflate? . . . . . . . . . . . . . . . . . . . . . . . . 83
What Will You See after an Airbag Inflates? . . . . . . . . . . . . . . . 84 Airbag System (cont'd)
When Should an Airbag
Inflate? . . . . . . . . . . . . . . . . . . . . . . . . 82
Where Are the Airbags? . . . . . . . . 81
Airbags Adding Equipment to theVehicle . . . . . . . . . . . . . . . . . . . . . . . . 89
Passenger Status Indicator . . . 132
Readiness Light . . . . . . . . . . . . . . 131
Servicing Airbag-Equipped Vehicles . . . . . . . . . . . . . . . . . . . . . . . 89
System Check . . . . . . . . . . . . . . . . . . 79
Alarm Vehicle Security . . . . . . . . . . . . . . . . 48
Alert Lane Change . . . . . . . . . . . . . . . . . 256
Side Blind Zone (SBZA) . . . . . . 255
All-Season Tires . . . . . . . . . . . . . . . . 326
All-Wheel Drive . . . . . . . . . . . . 218, 310
Antilock Brake System (ABS) . . . 219
Warning Light . . . . . . . . . . . . . . . . . 136
Appearance Care Exterior . . . . . . . . . . . . . . . . . . . . . . . 367
Interior . . . . . . . . . . . . . . . . . . . . . . . . 371
Assistance Program, Roadside . . . . . . . . . . . . . . . . . . . . . . 399
Assistance Systems for Driving . . . . . . . . . . . . . . . . . . . . . . . . 249

GMC Terrain/Terrain Denali Owner Manual (GMNA-Localizing-U.S./Canada/-
Mexico-12146071) - 2019 - crc - 7/27/18
422 Index
Assistance Systems forParking and Backing . . . . . . . . . . 243
Auto Stop Stop/Start System . . . . . . . . . . . . 199
Automatic Dimming Mirrors . . . . . . . . . . . . . . . . 52
Door Locks . . . . . . . . . . . . . . . . . . . . . 41
Forward Braking . . . . . . . . . . . . . . 252
Headlamp System . . . . . . . . . . . . 164
Transmission . . . . . . . . . . . . . . . . . 213
Transmission Fluid . . . . . . . . . . . 299
Automatic Transmission Manual Mode . . . . . . . . . . . . . . . . . 217
B
BatteryExterior Lighting Battery
Saver . . . . . . . . . . . . . . . . . . . . . . . 168
Load Management . . . . . . . . . . . . 168
Power Protection . . . . . . . . . . . . . 168
Battery - North America . . . . 309, 360
Biodiesel . . . . . . . . . . . . . . . . . . . . . . . 263
Blade Replacement, Wiper . . . . . 311
Brake
Parking, Electric . . . . . . . . . . . . . . 219
System Warning Light . . . . . . . . 135
Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . 307 Antilock . . . . . . . . . . . . . . . . . . . . . . . 219 Brakes (cont'd)
Assist . . . . . . . . . . . . . . . . . . . . . . . . . 221
Fluid . . . . . . . . . . . . . . . . . . . . . . . . . . 308
Braking . . . . . . . . . . . . . . . . . . . . . . . . . 181
Automatic Forward . . . . . . . . . . . 252
Braking System Front Pedestrian (FPB) . . . . . . . 253
Break-In, New Vehicle . . . . . . . . . . 195
Bulb Replacement Front Turn Signal Lamps . . . . . 315
Halogen Bulbs . . . . . . . . . . . . . . . . 314
Headlamp Aiming . . . . . . . . . . . . . 314
Headlamps . . . . . . . . . . . . . . . . . . . 314
High Intensity Discharge(HID) Lighting . . . . . . . . . . . . . . . 315
License Plate Lamps . . . . . . . . . 316
Taillamps . . . . . . . . . . . . . . . . . . . . . 316
Buying New Tires . . . . . . . . . . . . . . . 341
C
Calibration . . . . . . . . . . . . . . . . . . . . . . 116
California
Perchlorate MaterialsRequirements . . . . . . . . . . . . . . . 286 California
Proposition
65 Warning . . . . . . . . . .285, 309, 360,
Back Cover
Canadian Vehicle Owners . . . . . . . . 2
Capacities and Specifications . . . . . . . . . . . . . . . . . 392
Carbon Monoxide Engine Exhaust . . . . . . . . . . . . . . . 206
Liftgate . . . . . . . . . . . . . . . . . . . . . . . . . 42
Winter Driving . . . . . . . . . . . . . . . . 189
Cargo Cover . . . . . . . . . . . . . . . . . . . . . . . . . .110
Tie-Downs . . . . . . . . . . . . . . . . . . . . . 111
Caution, Danger, and Warning . . . . 3
Center Console Storage . . . . . . . . 109
Chains, Tire . . . . . . . . . . . . . . . . . . . . 345
Charging Wireless . . . . . . . . . . . . . . . . . . . . . . .118
Charging System Light . . . . . . . . . 133
Check Engine Light (MalfunctionIndicator) . . . . . . . . . . . . . . . . . . . . 133
Child Restraints Infants and Young Children . . . . . 93
Lower Anchors and Tethers
for Children . . . . . . . . . . . . . . . . . . . 98
Older Children . . . . . . . . . . . . . . . . . . 91

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