lock GMC TERRAIN 2020 Owner's Manual

GMC Terrain/Terrain Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-13556230) - 2020 - CRC - 9/5/19
Vehicle Care 305
2. Remove the two screw capsand two screws from the
taillamp assembly.
3. Pull the taillamp assembly out of the vehicle body.
4. Disconnect the lamp wiring harness.5. Turn the bulb socketcounterclockwise and pull
it out.
6. Pull the bulb straight out of the socket.
7. Push the replacement bulb straight into the bulb socket.
8. Push the bulb socket in and turn it clockwise.
9. Reverse Steps 2–5 to reinstall the lamp assembly.
License Plate Lamp
Lamp Assembly
Bulb Assembly

GMC Terrain/Terrain Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-13556230) - 2020 - CRC - 9/5/19
306 Vehicle Care
1. Bulb Socket
2. Bulb
3. Lamp Assembly
To replace one of these bulbs:1. Open the liftgate partway. See Liftgate 021.
2. Push the lamp assembly outboard to remove.
3. Pull the lamp assembly down to remove it from the liftgate.
4. Turn the bulb socket (1) counterclockwise to remove it
from the lamp assembly (3).
5. Pull the bulb (2) straight out of the bulb socket (1).
6. Push the replacement bulb straight into the bulb socket
and turn the bulb socket
clockwise to install it into the
lamp assembly.
7. Push the lamp assembly into the liftgate engaging the clip
side first.
8. Push on the lamp side opposite the clip until the lamp assembly
snaps into place.
Electrical System
Electrical System
Overload
The vehicle has fuses and circuit
breakers to protect against an
electrical system overload.
When the electrical load current is
too heavy, the circuit breaker opens
and closes, protecting the circuit
until the current load returns to
normal or the problem is fixed. This
greatly reduces the chance of circuit
overload and fire caused by
electrical problems.
Replace a bad fuse with a new one
of the identical size and rating.
If there is a problem on the road and
a fuse needs to be replaced, the
same amperage fuse can be
borrowed. Choose some feature of
the vehicle that is not needed to use
and replace it as soon as possible.
Headlamp Wiring
An electrical overload may cause
the lamps to go on and off, or in
some cases to remain off. Have the
headlamp wiring checked right away
if the lamps go on and off or
remain off.
Windshield Wipers
If the wiper motor overheats due to
heavy snow or ice, the windshield
wipers will stop until the motor cools
and will then restart.
Although the circuit is protected
from electrical overload, overload
due to heavy snow or ice may
cause wiper linkage damage.
Always clear ice and heavy snow
from the windshield before using the
windshield wipers.
If the overload is caused by an
electrical problem and not snow or
ice, be sure to get it fixed.

GMC Terrain/Terrain Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-13556230) - 2020 - CRC - 9/5/19
Vehicle Care 307
Fuses and Circuit
Breakers
The wiring circuits in the vehicle are
protected from short circuits by a
combination of fuses and circuit
breakers. This greatly reduces the
chance of damage caused by
electrical problems.
{Danger
Fuses and circuit breakers are
marked with their ampere rating.
Do not exceed the
specified amperage rating when
replacing fuses and circuit
breakers. Use of an oversized
fuse or circuit breaker can result
in a vehicle fire. You and others
could be seriously injured or
killed.
To check a fuse, look at the
silver-colored band inside the fuse.
If the band is broken or melted,
replace the fuse. Be sure to replace
a bad fuse with a new one of the
identical size and rating. Fuses of the same amperage can
be temporarily borrowed from
another fuse location, if a fuse goes
out. Replace the fuse as soon as
possible.
There is a fuse puller in the engine
compartment fuse block. See
Engine Compartment Fuse Block
0
307. It can be used to easily
remove fuses from the fuse block.
To identify and check fuses, circuit
breakers, and relays see Engine
Compartment Fuse Block 0307 or
Instrument Panel Fuse Block 0310
and
Rear Compartment Fuse Block
0 312.
Engine Compartment
Fuse Block
To remove the fuse block cover,
squeeze the clips on the cover and
lift it straight up. See Engine
Compartment Overview 0278.
Caution
Spilling liquid on any electrical
component on the vehicle may
damage it. Always keep the
covers on any electrical
component.

GMC Terrain/Terrain Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-13556230) - 2020 - CRC - 9/5/19
308 Vehicle Care
The vehicle may not be equipped
with all of the fuses, relays, and
features shown.Fuses Usage
F01 Starter 1
F02 Starter 2
F03 Lambda sensor 1
F04 Engine control module Fuses
Usage
F05 FlexFuel sensor
F06 Transmission control module
F07 –
F08 Engine control module
F09 Air conditioning clutch Fuses
Usage
F10 Canister vent solenoid
F11 Fuel system
F12 Front heated seats
F13 Engine coolant pump
F14 –
F15 Lambda sensor 2
F16 Ignition coils
F17 Engine control module
F18 Selective catalytic reduction module
(diesel only)
F19 NOx soot sensor (diesel only)
F20 DC DC converter 2
F21 Shift control
F22 Antilock brake pump
F23 Front/Rear washer pump
F24 –

GMC Terrain/Terrain Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-13556230) - 2020 - CRC - 9/5/19
Vehicle Care 309
FusesUsage
F25 Diesel fuel heater (diesel only)
F26 –
F27 Antilock brake valves
F28 LD trailer
F29 Rear window defogger
F30 Mirror defroster
F31 –
F32 Variable functions
F33 –
F34 Horn
F35 –
F36 Right high-beam headlamp
F37 Left high-beam headlamp
F38 Automatic headlamp leveling
F39 Fog lamps
F40 – Fuses
Usage
F41 Transmission range control module
F42 Motorized headlamp
F43 –
F44 Interior rearview mirror
F45 Passenger side ventilated seat
F46 Driver side ventilated seat
F47 Steering column lock assembly
F48 Rear wiper
F49 –
F50 Heated steering wheel
F51 Right daytime running lamp
F52 Engine control module/
Transmission control
F53 – Fuses
Usage
F54 –
F55 Front wiper speed/ Control
F56 –
F57 Left daytime running lamp
Relays Usage
K01 Starter solenoid
K02 Air conditioning control
K03 Engine control module
K04 Front wiper control
K05 Starter solenoid 2
K06 Fuel heater (diesel only)
K07 –
K08 –
K09 Front wiper speed
K10 –
K11 –

GMC Terrain/Terrain Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-13556230) - 2020 - CRC - 9/5/19
310 Vehicle Care
RelaysUsage
K12 High-beam headlamps
K13 Headlamps/Daytime running lamps
K14 Run/Crank
K15 Rear window defogger
*K16 Horn
*K17 Selective catalytic reduction
(diesel only)
*K18 Fog lamps
*K19 Coolant pump
*K20 –
*K21 Rear washer pump
*K22 Front washer pump
*K23 Rear wiper control
* PCB relays are not serviceable.Instrument Panel Fuse
Block
The instrument panel fuse block is
under the instrument panel on the
driver side.
To access the fuses, press and
release the latch near the top center
square. Apply pressure to the two retaining
tabs on the sides of the cover, until
the two retaining tabs clear the
sides of the instrument panel. Allow
the panel to move downward and
out of the way.
To reinstall the cover, reverse the
steps.
The vehicle may not be equipped
with all of the fuses and relays
shown.

GMC Terrain/Terrain Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-13556230) - 2020 - CRC - 9/5/19
Vehicle Care 311
FusesUsage
F01 DC AC inverter
F02 Front windows Fuses
Usage
F03 Trailer brake
F04 Heating, ventilation, and air conditioning
blower
F05 Body control module 2
F06 CGM
F07 –
F08 Body control module 3
F09 Amplifier
F10 –
F11 –
F12 –
F13 –
F14 Electronic shifter
F15 Transmission control module
F16 Front heated seats
F17 Left data link connector Fuses
Usage
F18 Body control module 7
F19 Exterior mirror
F20 Body control module 1
F21 Body control module 4
F22 Body control module 6
F23 Electric steering column lock
F24 Sensing and diagnostic module
F25 Occupancy sensor
F26 –
F27 Power seats
F28 Rear windows
F29 –
F30 Front heated seats switch
F31 Steering wheel controls

GMC Terrain/Terrain Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-13556230) - 2020 - CRC - 9/5/19
312 Vehicle Care
FusesUsage
F32 Body control module 8
F33 Heating, ventilation, and air conditioning
F34 Passive entry, passive start
F35 Liftgate latch
F36 Wireless charger module/USB
accessory
F37 Cigarette lighter
F38 OnStar
F39 Instrument panel USB
F40 Camera module/ Liftgate module
F41 Park assist module
F42 Radio
Relays Usage
K01 –
K02 Retained accessory power Relays
Usage
K03 Liftgate
K04 –
K05 Logistics
Circuit
Breakers Usage
CB1 –
CB2 Auxiliary power outlet console
Rear Compartment Fuse
Block
The rear compartment fuse block is
behind a trim panel on the side of
the rear compartment.
Remove the trim plate to access the
fuse block.
The vehicle may not be equipped
with all of the fuses and relays
shown.

GMC Terrain/Terrain Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-13556230) - 2020 - CRC - 9/5/19
Vehicle Care 331
tires. Never exceed the winter
tires’maximum speed capability
when using winter tires with a
lower speed rating.
{Warning
Tires could explode during
improper service. Attempting
to mount or dismount a tire
could cause injury or death.
Only your dealer or authorized
tire service center should
mount or dismount the tires.
{Warning
Mixing tires of different sizes,
tread patterns, or types on the
same axle may cause loss of
control of the vehicle, resulting
in a crash or other vehicle
damage. Use the same size,
load range, and type of tires
as the original tires.
{Warning
Using bias-ply tires on the
vehicle may cause the wheel
rim flanges to develop cracks
after many miles of driving.
A tire and/or wheel could fail
suddenly and cause a crash.
Use only radial-ply tires with
the wheels on the vehicle.
If the vehicle tires must be
replaced with a tire that does not
have a TPC Spec number, make
sure they are the same size,
load range, speed rating, and
construction (radial) as the
original tires.
Vehicles that have a tire
pressure monitoring system
could give an inaccurate
low-pressure warning if non-TPC
Spec rated tires are installed.
See Tire Pressure Monitor
System 0323. The Tire and Loading
Information label indicates the
original equipment tires on the
vehicle. See
Vehicle Load Limits
0 175.
Different Size Tires and
Wheels
If wheels or tires are installed that
are a different size than the original
equipment wheels and tires, vehicle
performance, including its braking,
ride and handling characteristics,
stability, and resistance to rollover
may be affected. If the vehicle has
electronic systems such as antilock
brakes, rollover airbags, traction
control, electronic stability control,
or All-Wheel Drive, the performance
of these systems can also be
affected.
{Warning
If different sized wheels are used,
there may not be an acceptable
level of performance and safety if
(Continued)

GMC Terrain/Terrain Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-13556230) - 2020 - CRC - 9/5/19
336 Vehicle Care
Warning (Continued)
2. Put an automatictransmission in P (Park) or a
manual transmission in
1 (First) or R (Reverse).
3. Turn off the engine and do not restart while the vehicle
is raised.
4. Do not allow passengers to remain in the vehicle.
5. Place wheel blocks, if equipped, on both sides of
the tire at the opposite
corner of the tire being
changed.
This vehicle may come with a jack
and spare tire or a tire sealant and
compressor kit. To use the jacking
equipment to change a spare tire
safely, follow the instructions below.
Then see Tire Changing 0343. To
use the tire sealant and compressor
kit, see Tire Sealant and
Compressor Kit 0336. When the vehicle has a flat tire (2),
use the following example as a
guide to assist you in the placement
of wheel blocks (1), if equipped.
1. Wheel Block (If Equipped)
2. Flat Tire
The following information explains
how to repair or change a tire.
Tire Sealant and
Compressor Kit
{Warning
Idling a vehicle in an enclosed
area with poor ventilation is
dangerous. Engine exhaust may
(Continued)
Warning (Continued)
enter the vehicle. Engine exhaust
contains carbon monoxide (CO)
which cannot be seen or smelled.
It can cause unconsciousness
and even death. Never run the
engine in an enclosed area that
has no fresh air ventilation. For
more information, seeEngine
Exhaust 0191.
{Warning
Overinflating a tire could cause
the tire to rupture and you or
others could be injured. Be sure
to read and follow the tire sealant
and compressor kit instructions
and inflate the tire to its
recommended pressure. Do not
exceed the recommended
pressure.