2021 GMC TERRAIN hood open

GMC Terrain/Terrain Denali Owner Manual(GMNA-Localizing-U.S./Canada/
Mexico-14420055) - 2021 - CRC - 11/13/20
260 Vehicle Care
To open the hood:1. Pull the hood release lever with the
isymbol. It is on the lower left side
of the instrument panel.
2. Go to the front of the vehicle and locate the secondary release lever under the
front center of the hood. Push the
secondary hood release lever to the right
to release.
3. Lift the hood and release the hood proprod from its retainer in the front of the
engine compartment. Securely insert the
rod end into the slot marked with an
arrow, on the underside of the hood.
To close the hood: 1. Before closing the hood, be sure all filler caps are on properly, and all tools are
removed. 2. Lift the hood and remove the hood prop
rod from the underside of the hood.
Return the prop rod to its retainer. The
prop rod must click into place when
returning it to the retainer to prevent
hood damage.
3. Lower the hood 20 cm (8 in) above the vehicle and release it. Check to make
sure the hood is latched completely.
Repeat this process with additional force
if necessary.{Warning
Do not drive the vehicle if the hood is
not latched completely. The hood could
open fully, block your vision, and cause a
crash. You or others could be injured.
Always close the hood completely before
driving.

GMC Terrain/Terrain Denali Owner Manual(GMNA-Localizing-U.S./Canada/
Mexico-14420055) - 2021 - CRC - 11/13/20
266 Vehicle Care
How to Inspect/Replace the Engine Air
Cleaner/Filter
Do not start the engine or have the engine
running with the engine air cleaner/filter
housing open. Before removing the engine
air cleaner/filter, make sure that the engine
air cleaner/filter housing and nearby
components are free of dirt and debris. Do
not clean the engine air cleaner/filter or
components with water or compressed air.
1. Screws
2. Air Duct Clamp
3. Electrical Connector
To inspect or replace the engine air cleaner/
filter:1. Open the hood. See Hood0259.
2. Loosen the screw on the air duct clamp (2) and remove the air duct hose
from the cover.
3. Remove the four screws (1) and remove the air cleaner/filter cover, keeping the
wiring harness electrical connector (3)
connected to the sensor.
4. Pull straight up on the cover, and while holding the cover, remove the air
cleaner/filter.
{Warning
If part replacement is necessary, the part
must be replaced with one of the same
part number or with an equivalent part.
Use of a replacement part without the
same fit, form, and function may result
in personal injury or damage to the
vehicle.
5. Inspect or replace the air cleaner/filter.
How to Reinstall the Engine Air Cleaner/
Filter
1. Align the air cleaner/filter with the indicated point on the base of the air
cleaner/filter housing and install the air
cleaner/filter. The outer air cleaner/filter
seal must be fitted properly in the air
cleaner/filter housing.
2. Align the air cleaner/filter housing cover tabs to the air cleaner/filter housing.
3. Install the air cleaner/filter housing cover using the four screws.
4. Slide the air duct onto the cover assembly and tighten the screw on the
air duct clamp.

GMC Terrain/Terrain Denali Owner Manual(GMNA-Localizing-U.S./Canada/
Mexico-14420055) - 2021 - CRC - 11/13/20
276 Vehicle Care
2. Push the release lever (2) to disengagethe hook and push the wiper arm (1) out
of the blade assembly (3).
3. Push the new blade assembly securely on the wiper arm until the release lever
clicks into place.
Windshield Replacement
Driver Assistance Systems
If the windshield needs to be replaced and
the vehicle is equipped with a front camera
sensor for the Driver Assistance Systems, a
GM replacement windshield is
recommended. The replacement windshield
must be installed according to GM
specifications for proper alignment. If it is
not, these systems may not work properly,
they may display messages, or they may
not work at all. See your dealer for proper
windshield replacement.
Acoustic Windshield
The vehicle is equipped with an acoustic
windshield. If the windshield needs to be
replaced, be sure to get an acoustic
windshield so you will continue to have the
benefits an acoustic windshield can provide.
Gas Strut(s)
This vehicle is equipped with gas strut(s) to
provide assistance in lifting and holding
open the hood/trunk/liftgate system in full
open position.
{Warning
If the gas struts that hold open the hood,
trunk, and/or liftgate fail, you or others
could be seriously injured. Take the
vehicle to your dealer for service
immediately. Visually inspect the gas
struts for signs of wear, cracks, or other
damage periodically. Check to make sure
the hood/trunk/liftgate is held open with
enough force. If struts are failing to hold
the hood/trunk/liftgate, do not operate.
Have the vehicle serviced.
Caution
Do not apply tape or hang any objects
from gas struts. Also do not push down
or pull on gas struts. This may cause
damage to the vehicle.
See Maintenance Schedule 0331.
Hood

GMC Terrain/Terrain Denali Owner Manual(GMNA-Localizing-U.S./Canada/
Mexico-14420055) - 2021 - CRC - 11/13/20
278 Vehicle Care
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 Hood0259.
2. Remove the bulb access cap from the top
of the headlamp assembly by turning it
counterclockwise.
3. Remove the bulb from the bulb socketby 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 Liftgate017.
2. Remove the two screw caps and two
screws from the taillamp assembly.
3. Pull the taillamp assembly out of the vehicle body.
4. Disconnect the lamp wiring harness.

GMC Terrain/Terrain Denali Owner Manual(GMNA-Localizing-U.S./Canada/
Mexico-14420055) - 2021 - CRC - 11/13/20
Vehicle Care 317
1. Discharged Battery NegativeGrounding Stud
2. Discharged Battery Positive Terminal
3. Good Battery Negative Terminal
4. Good Battery Positive Terminal
The jump start negative grounding stud (1)
for the discharged battery is to the left of
the windshield washer fluid reservoir.
The jump start positive terminal on the
discharged battery (2) is located in the
engine compartment on the driver side of
the vehicle.
The jump start positive terminal (4) and
negative terminal (3) are on the battery of
the vehicle providing the jump start. The positive jump start connection for the
discharged battery is under a trim cover.
Open the cover to expose the terminal.
1. Check the other vehicle. It must have a 12-volt battery with a negative ground
system.
Caution
If the other vehicle does not have a
12-volt system with a negative ground,
both vehicles can be damaged. Only use
a vehicle that has a 12-volt system with a
negative ground for jump starting.
2. Position the two vehicles so that they are not touching.
3. Set the parking brake. See Shifting Into
Park 0204.
Caution
If any accessories are left on or plugged
in during the jump starting procedure,
they could be damaged. The repairs
would not be covered by the vehicle
warranty. Whenever possible, turn off or
unplug all accessories on either vehicle
when jump starting. 4. Turn the ignition off. Turn off all lights
and accessories in both vehicles, except
the hazard warning flashers if needed.
{Warning
An electric fan can start up even when
the engine is not running and can injure
you. Keep hands, clothing, and tools
away from any underhood electric fan.
{Warning
Using a match near a battery can cause
battery gas to explode. People have been
hurt doing this, and some have been
blinded. Use a flashlight if you need
more light.
Battery fluid contains acid that can burn
you. Do not get it on you. If you
accidentally get it in your eyes or on
your skin, flush the place with water and
get medical help immediately.

GMC Terrain/Terrain Denali Owner Manual(GMNA-Localizing-U.S./Canada/
Mexico-14420055) - 2021 - CRC - 11/13/20
Vehicle Care 321
Dolly Towing (Front-Wheel-Drive
Vehicles)
Tow the vehicle with the two rear wheels
on the ground and the front wheels on a
dolly.
To tow the vehicle from the front with the
rear wheels on the ground:1. Put the front wheels on the dolly.
2. Shift the transmission to P (Park). See Shifting Into Park 0204.
3. Set the parking brake.
4. Secure the vehicle to the dolly.
5. Follow the dolly manufacturer's instructions for preparing the vehicle and
dolly for towing. 6. Open the driver door and leave it open.
7. Shift to N (Neutral).
8. Ensure the parking brake is released.
9. Turn off the vehicle and release the
brake pedal.
10. The vehicle should continue to be in N (Neutral). If it is not, restart the engine
and repeat Steps 6-8.
11. Release the hood.
12. Lock the vehicle doors, with the driver door still open.
13. Exit the vehicle with the RKE transmitter.
14. Open the hood.
15. Disconnect the negative (–) terminal connector from the 12-volt battery.
16. Close and latch the hood.
17. Close the driver door.
Caution
If 105 km/h (65 mph) is exceeded while
towing the vehicle, it could be damaged.
Never exceed 105 km/h (65 mph) while
towing the vehicle.
Towing the Vehicle from the Rear

GMC Terrain/Terrain Denali Owner Manual(GMNA-Localizing-U.S./Canada/-
Mexico-14420055) - 2021 - CRC - 11/13/20
Index 369
Fuel (cont'd)Economy, Driving for Better . . . . . . . . . . . 187
Filling a Portable Fuel Container . . . . . . . 248
Filling the Tank . . . . . . . . . . . . . . . . . . . . . . . . 247
Foreign Countries . . . . . . . . . . . . . . . . . . . . . . 246
Gauge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90
Low Fuel Warning Light . . . . . . . . . . . . . . . . 99
Prohibited Fuels . . . . . . . . . . . . . . . . . . . . . . . 246
Recommended . . . . . . . . . . . . . . . . . . . . . . . . . 246
Top Tier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 246
Fuses Engine Compartment Fuse Block . . . . . . . 281
Fuses and Circuit Breakers . . . . . . . . . . . . . 280
Instrument Panel Fuse Block . . . . . . . . . . . 284
Rear Compartment Fuse Block . . . . . . . . . 285
G
Garage Door Opener . . . . . . . . . . . . . . . . . . . . . . 112
Programming . . . . . . . . . . . . . . . . . . . . . . . . . . . 113
Gas Strut(s) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 276
Gauges Engine Coolant Temperature . . . . . . . . . . . . 91
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90
Odometer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90
Speedometer . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
Tachometer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90
Trip Odometer . . . . . . . . . . . . . . . . . . . . . . . . . . 90
Warning Lights and Indicators . . . . . . . . . . 84 General Information
Service and Maintenance . . . . . . . . . . . . . . 330
Towing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 248
Vehicle Care . . . . . . . . . . . . . . . . . . . . . . . . . . . 258
Global Positioning System (GPS) . . . . . . . . . 148
Glove Box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
GM Mobility Reimbursement Program . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 349
Guidance Problems with the Route . . . . . . . . . . . . . . 149
H
Halogen Bulbs . . . . . . . . . . . . . . . . . . . . . . . . . . . 277
Hazard Warning Flashers . . . . . . . . . . . . . . . . . 119
HD Radio Technology . . . . . . . . . . . . . . . . . . . . . 132
Head Restraints . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
HeadlampsAiming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 277
Automatic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118
Bulb Replacement . . . . . . . . . . . . . . . . . . . . . . 277
Daytime Running Lamps (DRL) . . . . . . . . . . 118
Flash-to-Pass . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118
High Intensity Discharge (HID)Lighting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 277
High-Beam On Light . . . . . . . . . . . . . . . . . . . . 99
High/Low Beam Changer . . . . . . . . . . . . . . . 117
Lamps On Reminder . . . . . . . . . . . . . . . . . . . 100 Heated
Rear Seats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Steering Wheel . . . . . . . . . . . . . . . . . . . . . . . . . 79
Heated and Ventilated Front Seats . . . . . . . .35
Heated Mirrors . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
Heater Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 203
Heating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 178, 180
High-Beam On Light . . . . . . . . . . . . . . . . . . . . . . 99
Hill and Mountain Roads . . . . . . . . . . . . . . . . 194
Hill Descent Control (HDC) . . . . . . . . . . . . . . . . 217
Hill Descent Control Light . . . . . . . . . . . . . . . . . 96
Hill Start Assist (HSA) . . . . . . . . . . . . . . . . . . . . .214
Hood . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 259
Horn . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
How to Wear Seat Belts Properly . . . . . . . . . .41
HVAC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 178, 180
I
If the System Needs Service . . . . . . . . . . . . . 149
Ignition Positions . . . . . . . . . . . . . . . . . . . . . . . . 199
Immobilizer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
Indicator Pedestrian Ahead . . . . . . . . . . . . . . . . . . . . . . . 97
Vehicle Ahead . . . . . . . . . . . . . . . . . . . . . . . . . . 97
Infants and Young Children, Restraints . . . . 58
Information
Publication Ordering . . . . . . . . . . . . . . . . . . . 353