turn signal bulb GMC TERRAIN 2020 Owner's Manual

GMC Terrain/Terrain Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-13556230) - 2020 - CRC - 9/4/19
148 Lighting
|:Press to make the front and
rear turn signal lamps flash on and
off. This warns others that you are
having trouble.
Press
|again to turn the
flashers off.
Turn and Lane-Change
Signals
Move the lever all the way up or
down to signal a turn.
An arrow on the instrument cluster
will flash in the direction of the turn
or lane change. Raise or lower the lever until the
arrow starts to flash to signal a lane
change. Hold it there until the lane
change is complete. If the lever is
moved momentarily to the lane
change position, the arrow will flash
three times.
The lever returns to its starting
position when it is released.
If after signaling a turn or lane
change, the arrow flashes rapidly or
does not come on, a signal bulb
may be burned out.
Have any burned out bulbs
replaced. If a bulb is not burned out,
check the fuse. See
Instrument
Panel Fuse Block 0310.
Fog Lamps
The fog lamps button is on the
instrument panel beside the steering
wheel.
To turn on the fog lamps, the ignition
and the headlamps or parking lamps
must be on.
#:If equipped, press to turn on or
off. An indicator light on the
instrument cluster comes on when
the fog lamps are on.
Some localities have laws that
require the headlamps to be on
along with the fog lamps.

GMC Terrain/Terrain Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-13556230) - 2020 - CRC - 9/4/19
Driving and Operating 271
Trailer Lamps
Always check all trailer lamps are
working at the beginning of each
trip, and periodically on longer trips.
Turn Signals When Towing a
Trailer
When properly connected, the trailer
turn signals will illuminate to indicate
the vehicle is turning, changing
lanes, or stopping. When towing a
trailer, the arrows on the instrument
cluster will illuminate even if the
trailer is not properly connected or
the bulbs are burned out.
Trailer Tires
Special Trailer (ST) tires differ from
vehicle tires. Trailer tires are
designed with stiff sidewalls to help
prevent sway and to support heavy
loads. These features can make it
difficult to determine if the trailer tire
pressures are low only based on a
visual inspection.Always check all trailer tire
pressures before each trip when the
tires are cool. Low trailer tire
pressure is a leading cause of trailer
tire blow-outs.
Trailer tires deteriorate over time.
The trailer tire sidewall will show the
week and year the tire was
manufactured. Many trailer tire
manufacturers recommend
replacing tires more than six
years old.
Overloading is another leading
cause of trailer tire blow-outs. Never
load your trailer with more weight
than the tires are designed to
support. The load rating is located
on the trailer tire sidewall.
Always know the maximum speed
rating for the trailer tires before
driving. This may be significantly
lower than the vehicle tire speed
rating. The speed rating may be on
the trailer tire sidewall. If the speed
rating is not shown, the default
trailer tire speed rating is 105 km/h
(65 mph).
Conversions and
Add-Ons
Add-On Electrical
Equipment
{Warning
The Data Link Connector (DLC) is
used for vehicle service and
Emission Inspection/Maintenance
testing. See
Malfunction Indicator
Lamp (Check Engine Light) 0115.
A device connected to the DLC —
such as an aftermarket fleet or
driver-behavior tracking device —
may interfere with vehicle
systems. This could affect vehicle
operation and cause a crash.
Such devices may also access
information stored in the vehicle’s
systems.

GMC Terrain/Terrain Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-13556230) - 2020 - CRC - 9/5/19
Vehicle Care 273
Vehicle Care
General Information
General Information . . . . . . . . . . 274
California Proposition65 Warning . . . . . . . . . . . . . . . . . 274
California Perchlorate Materials Requirements . . . . . 275
Accessories and Modifications . . . . . . . . . . . . . . . . 275
Vehicle Checks
Doing Your OwnService Work . . . . . . . . . . . . . . . 275
Hood . . . . . . . . . . . . . . . . . . . . . . . . . 276
Engine Compartment Overview . . . . . . . . . . . . . . . . . . . . 278
Engine Oil . . . . . . . . . . . . . . . . . . . . 283
Engine Oil Life System . . . . . . . 287
Automatic Transmission Fluid . . . . . . . . . . . . . . . . . . . . . . . . 288
Engine Air Cleaner/Filter . . . . . . 288
Cooling System . . . . . . . . . . . . . . 290
Engine Overheating . . . . . . . . . . 294
Washer Fluid . . . . . . . . . . . . . . . . . 296
Brakes . . . . . . . . . . . . . . . . . . . . . . . 296
Brake Fluid . . . . . . . . . . . . . . . . . . . 297
Battery - North America . . . . . . 298
All-Wheel Drive . . . . . . . . . . . . . . . 299 Starter Switch Check . . . . . . . . . 299
Park Brake and P (Park)
Mechanism Check . . . . . . . . . . 300
Wiper Blade Replacement . . . . 300
Windshield Replacement . . . . . 301
Gas Strut(s) . . . . . . . . . . . . . . . . . . 302
Headlamp Aiming
Front Headlamp Aiming . . . . . . 303
Bulb Replacement
Bulb Replacement . . . . . . . . . . . . 303
Halogen Bulbs . . . . . . . . . . . . . . . . 303
High Intensity Discharge (HID) Lighting . . . . . . . . . . . . . . . . . . . . . 304
LED Lighting . . . . . . . . . . . . . . . . . 304
Front Turn Signal Lamps . . . . . 304
Taillamps . . . . . . . . . . . . . . . . . . . . . 304
License Plate Lamp . . . . . . . . . . 305
Electrical System
Electrical System Overload . . . 306
Fuses and Circuit Breakers . . . 307
Engine Compartment Fuse Block . . . . . . . . . . . . . . . . . . . . . . . . 307
Instrument Panel Fuse Block . . . . . . . . . . . . . . . . . . . . . . . . 310
Rear Compartment Fuse Block . . . . . . . . . . . . . . . . . . . . . . . . 312
Wheels and Tires
Tires . . . . . . . . . . . . . . . . . . . . . . . . . . 314
All-Season Tires . . . . . . . . . . . . . . 315
Winter Tires . . . . . . . . . . . . . . . . . . 315
Summer Tires . . . . . . . . . . . . . . . . 316
Tire Sidewall Labeling . . . . . . . . 316
Tire Designations . . . . . . . . . . . . . 318
Tire Terminology andDefinitions . . . . . . . . . . . . . . . . . . 319
Tire Pressure . . . . . . . . . . . . . . . . . 321
Tire Pressure Monitor System . . . . . . . . . . . . . . . . . . . . . . 323
Tire Pressure Monitor Operation . . . . . . . . . . . . . . . . . . . 324
Tire Inspection . . . . . . . . . . . . . . . . 328
Tire Rotation . . . . . . . . . . . . . . . . . 328
When It Is Time for New Tires . . . . . . . . . . . . . . . . . . . . . . . . 329
Buying New Tires . . . . . . . . . . . . . 330
Different Size Tires and Wheels . . . . . . . . . . . . . . . . . . . . . . 331
Uniform Tire Quality Grading . . . . . . . . . . . . . . . . . . . . . 332
Wheel Alignment and Tire Balance . . . . . . . . . . . . . . . . . . . . . 333
Wheel Replacement . . . . . . . . . . 333
Tire Chains . . . . . . . . . . . . . . . . . . . 334
If a Tire Goes Flat . . . . . . . . . . . . 335
Tire Sealant and Compressor Kit . . . . . . . . . . . . . 336

GMC Terrain/Terrain Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-13556230) - 2020 - CRC - 9/5/19
304 Vehicle Care
High Intensity Discharge
(HID) Lighting
{Warning
The High Intensity Discharge
(HID) lighting system operates at
a very high voltage. If you try to
service any of the system
components, you could be
seriously injured. Have your
dealer or a qualified technician
service them.
After an HID headlamp bulb has
been replaced, the beam might be a
slightly different shade than it was
originally. This is normal.
LED Lighting
This vehicle has several LED lamps.
For replacement of any LED lighting
assembly, contact your dealer.
Front Turn Signal Lamps
To replace one of these bulbs: 1. Open the hood. See Hood
0 276.
2. Remove the bulb access cap
from the top of the headlamp
assembly by turning it
counterclockwise.
3. Remove the bulb from the bulb
socket by pinching the tabs on
either side of the bulb and pull
straight out.
4. Install the new bulb in the bulb socket.
5. Install the bulb access cap onto the headlamp assembly by
turning clockwise.
Taillamps
To replace one of these lamps:
1. Open the liftgate. See Liftgate
0 21.

GMC Terrain/Terrain Denali Owner Manual (GMNA-Localizing-U.S./Canada/-
Mexico-13556230) - 2020 - CRC - 9/4/19
Index 411
Assistance Program,Roadside . . . . . . . . . . . . . . . . . . . . . . 389
Assistance Systems for Driving . . . . . . . . . . . . . . . . . . . . . . . . 237
Assistance Systems for Parking and Backing . . . . . . . . . . 231
Auto Stop
Stop/Start System . . . . . . . . . . . . 184
Automatic Dimming Mirrors . . . . . . . . . . . . . . . . 30
Door Locks . . . . . . . . . . . . . . . . . . . . . 20
Emergency Braking (AEB) . . . . 239
Headlamp System . . . . . . . . . . . . 147
Transmission . . . . . . . . . . . . . . . . . 201
Transmission Fluid . . . . . . . . . . . 288
Automatic Transmission
Manual Mode . . . . . . . . . . . . . . . . . 205
B
BatteryExterior Lighting Battery
Saver . . . . . . . . . . . . . . . . . . . . . . . 151
Load Management . . . . . . . . . . . . 151
Power Protection . . . . . . . . . . . . . 151
Battery - North America . . . . 298, 349
Biodiesel . . . . . . . . . . . . . . . . . . . . . . . 251
Blade Replacement, Wiper . . . . . 300 Brake
Parking, Electric . . . . . . . . . . . . . . 207
System Warning Light . . . . . . . . .117
Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . 296 Antilock . . . . . . . . . . . . . . . . . . . . . . . 206
Assist . . . . . . . . . . . . . . . . . . . . . . . . . 208
Fluid . . . . . . . . . . . . . . . . . . . . . . . . . . 297
Braking . . . . . . . . . . . . . . . . . . . . . . . . . 165 AutomaticEmergency (AEB) . . . . . . . . . . . 239
Braking System
Front Pedestrian (FPB) . . . . . . . 241
Break-In, New Vehicle . . . . . . . . . . 179
Bulb Replacement Front Turn Signal Lamps . . . . . 304
Halogen Bulbs . . . . . . . . . . . . . . . . 303
Headlamp Aiming . . . . . . . . . . . . . 303
Headlamps . . . . . . . . . . . . . . . . . . . 303
High Intensity Discharge(HID) Lighting . . . . . . . . . . . . . . . 304
License Plate Lamps . . . . . . . . . 305
Taillamps . . . . . . . . . . . . . . . . . . . . . 304
Buying New Tires . . . . . . . . . . . . . . . 330
C
Calibration . . . . . . . . . . . . . . . . . . . . . . . 97
California Perchlorate MaterialsRequirements . . . . . . . . . . . . . . . 275
California Proposition
65 Warning . . . . . . . . . .274, 298, 349, Back Cover
Canadian Vehicle Owners . . . . . . . . 2
Capacities and
Specifications . . . . . . . . . . . . . . . . . 382
Carbon Monoxide Engine Exhaust . . . . . . . . . . . . . . . 191
Liftgate . . . . . . . . . . . . . . . . . . . . . . . . . 21
Winter Driving . . . . . . . . . . . . . . . . 173
Cargo Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
Tie-Downs . . . . . . . . . . . . . . . . . . . . . . 92
Caution, Danger, and Warning . . . . 3
Center Console Storage . . . . . . . . . 91
Chains, Tire . . . . . . . . . . . . . . . . . . . . 334
Charging Wireless . . . . . . . . . . . . . . . . . . . . . . . . 99
Charging System Light . . . . . . . . . 115

GMC Terrain/Terrain Denali Owner Manual (GMNA-Localizing-U.S./Canada/-
Mexico-13556230) - 2020 - CRC - 9/4/19
Index 415
H
Halogen Bulbs . . . . . . . . . . . . . . . . . . 303
Hazard Warning Flashers . . . . . . . 147
Head Restraints . . . . . . . . . . . . . . . . . 37
HeadlampsAiming . . . . . . . . . . . . . . . . . . . . . . . . 303
Automatic . . . . . . . . . . . . . . . . . . . . . 147
Bulb Replacement . . . . . . . . . . . . 303
Daytime RunningLamps (DRL) . . . . . . . . . . . . . . . . 146
Flash-to-Pass . . . . . . . . . . . . . . . . . 146
High Intensity Discharge (HID) Lighting . . . . . . . . . . . . . . . 304
High-Beam On Light . . . . . . . . . . 123
High/Low Beam Changer . . . . . 146
Lamps On Reminder . . . . . . . . . 123
Heated Rear Seats . . . . . . . . . . . . . . . . . . . . . 49
Steering Wheel . . . . . . . . . . . . . . . . . 95
Heated and Ventilated Front Seats . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Heated Mirrors . . . . . . . . . . . . . . . . . . . 30
Heater Engine . . . . . . . . . . . . . . . . . . . . . . . . 186
Heating . . . . . . . . . . . . . . . . . . . . 153, 155
High-Beam On Light . . . . . . . . . . . . 123
Hill and Mountain Roads . . . . . . . . 172
Hill Descent Control (HDC) . . . . . 213 Hill Descent Control Light . . . . . . . 119
Hill Start Assist (HSA) . . . . . . . . . . 209
Hood . . . . . . . . . . . . . . . . . . . . . . . . . . . 276
Horn . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
How to Wear Seat Belts
Properly . . . . . . . . . . . . . . . . . . . . . . . . 51
HVAC . . . . . . . . . . . . . . . . . . . . . . 153, 155
I
Ignition Positions . . . . . . . . . . . . . . . 179
Immobilizer . . . . . . . . . . . . . . . . . . . . . . 28
Indicator
Pedestrian Ahead . . . . . . . . . . . . 120
Vehicle Ahead . . . . . . . . . . . . . . . . .119
Infants and Young Children, Restraints . . . . . . . . . . . . . . . . . . . . . . 72
Information
Publication Ordering . . . . . . . . . . 394
Infotainment . . . . . . . . . . . . . . . . . . . . 152
Infotainment System . . . . . . . . . . . . 398
Instrument Cluster . . . . . . . . . 103, 107
Instrument Panel Overview . . . . . . . 5
Interior Rearview Mirrors . . . . . . . . . 31
Introduction . . . . . . . . . . . . . . . . . . . . . . . 2
J
Jump Starting - North America . . . . . . . . . . . . . . . . . . . . . . . 349
K
Keyless EntryRemote (RKE) System . . . . . . . . . . 8
Keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
L
Labeling, Tire Sidewall . . . . . . . . . . 316
Lamps Courtesy . . . . . . . . . . . . . . . . . . . . . . 149
Daytime Running (DRL) . . . . . . 146
Dome . . . . . . . . . . . . . . . . . . . . . . . . . 149
Exterior Controls . . . . . . . . . . . . . . 144
Exterior Lighting BatterySaver . . . . . . . . . . . . . . . . . . . . . . . 151
Front Turn Signal . . . . . . . . . . . . . 304
License Plate . . . . . . . . . . . . . . . . . 305
Malfunction Indicator
(Check Engine) . . . . . . . . . . . . . .115
On Reminder . . . . . . . . . . . . . . . . . 123
Reading . . . . . . . . . . . . . . . . . . . . . . 149
Taillamps . . . . . . . . . . . . . . . . . . . . . 304
Lane Change Alert (LCA) . . . . . . . 243
Lane Keep Assist (LKA) . . . . . . . . 245
Lane Keep Assist Light . . . . . . . . . 119
Lap-Shoulder Belt . . . . . . . . . . . . . . . 53
LATCH System Replacing Parts after aCrash . . . . . . . . . . . . . . . . . . . . . . . . . 84