Page 226 of 364
Black plate (6,1)GMC Terrain/Terrain Denali Owner Manual - 2013 - crc 1st edition - 5/8/12
10-6 Vehicle Care
1.Engine Air Cleaner/Filter on
page 10‑12.
2. Engine Cover on page 10‑8.
3. Engine Oil Dipstick (Out of View). See Engine Oil on
page 10‑8.
4. Engine Oil Fill Cap. See Engine
Oil on page 10‑8.
5. Brake Fluid Reservoir. See Brakes on page 10‑21.
6. Engine Compartment Fuse
Block on page 10‑32. 7. Remote Positive (+) Terminal.
See Jump Starting on
page 10‑67.
8. Remote Negative (−) Terminal. See Jump Starting on
page 10‑67.
9. Battery on page 10‑23 (Out
of View).
10. Engine Coolant Surge Tank and Pressure Cap. See Engine
Coolant on page 10‑15.
11. Windshield Washer Fluid Reservoir. See Washer Fluid
on page 10‑20.
Page 228 of 364

Black plate (8,1)GMC Terrain/Terrain Denali Owner Manual - 2013 - crc 1st edition - 5/8/12
10-8 Vehicle Care
1.Engine Air Cleaner/Filter on
page 10‑12.
2. Power Steering Fluid Reservoir (Under Engine Cover). See
Power Steering Fluid (2.4L L4
Engine) on page 10‑19 orPower
Steering Fluid (3.6L V6 Engine)
on page 10‑19.
3. Engine Oil Fill Cap. See Engine
Oil on page 10‑8.
4. Engine Cover on page 10‑8.
5. Engine Oil Dipstick (Out of View). See Engine Oil on
page 10‑8.
6. Brake Fluid Reservoir. See Brakes on page 10‑21.
7. Engine Compartment Fuse
Block on page 10‑32.
8. Remote Positive (+) Terminal. See Jump Starting on
page 10‑67.
9. Remote Negative (−) Terminal. See Jump Starting on
page 10‑67. 10.
Battery on page 10‑23 (Out
of View).
11. Engine Coolant Surge Tank and Pressure Cap. See Engine
Coolant on page 10‑15.
12. Windshield Washer Fluid Reservoir. See Washer Fluid
on page 10‑20.
Engine Cover
Engine Cover 3.6L V6
1. Oil Fill Cap
2. Engine Cover Bolt 3. Engine Cover
To remove:
1. Remove the oil fill cap (1).
2. Remove the engine cover
bolt (2).
3. Raise the engine cover (3) to release from the retainers.
4. Lift and remove the engine cover.
5. Reverse Steps 1–4 to reinstall engine cover.
Engine Oil
To ensure proper engine
performance and long life, careful
attention must be paid to engine oil.
Following these simple, but
important steps will help protect
your investment:
.Always use engine oil approved
to the proper specification and of
the proper viscosity grade. See
“Selecting the Right Engine Oil”
in this section.
Page 232 of 364

Black plate (12,1)GMC Terrain/Terrain Denali Owner Manual - 2013 - crc 1st edition - 5/8/12
10-12 Vehicle Care
How to Reset the Engine Oil
Life System
Reset the system whenever the
engine oil is changed so that the
system can calculate the next
engine oil change. To reset the
system:
1. Turn the ignition to ON/RUN,with the engine off.
2. Press the DIC MENU button to display the Vehicle
Information menu.
3. Press either the up or down arrows to view REMAINING
OIL LIFE.
4. Press the SET/CLR button until 100% is displayed.
5. Turn the key to LOCK/OFF.
Or:
1. Turn the ignition to ON/RUN with the engine off.
2. Fully press and release the accelerator pedal three times
within five seconds. The system is reset when the
CHANGE ENGINE OIL SOON
message goes off.
If the CHANGE ENGINE OIL SOON
message comes back on when the
vehicle is started, the engine oil life
system has not been reset. Repeat
the procedure.
Automatic Transmission
Fluid
How to Check Automatic
Transmission Fluid
It is not necessary to check the
transmission fluid level.
A transmission fluid leak is the only
reason for fluid loss. If a leak
occurs, take the vehicle to your
dealer and have it repaired as soon
as possible.
There is a special procedure for
checking and changing the
transmission fluid. Because this
procedure is difficult, this should be
done at your dealer. Contact your
dealer for additional information or the procedure can be found in the
service manual. To purchase a
service manual, see
Service
Publications Ordering Information
on page 13‑17.
Change the fluid and filter at the
intervals listed in Maintenance
Schedule on page 11‑3, and be sure
to use the fluid listed in
Recommended Fluids and
Lubricants on page 11‑12.
Engine Air Cleaner/Filter
See Engine Compartment Overview
on page 10‑5 for the location of the
engine air cleaner/filter.
When to Inspect the Engine Air
Cleaner/Filter
Inspect or replace the air cleaner/
filter at the scheduled maintenance
intervals. See Maintenance
Schedule on page 11‑3 for more
information. If driving in dusty/dirty
conditions, inspect the filter at each
engine oil change.
Page 237 of 364

Black plate (17,1)GMC Terrain/Terrain Denali Owner Manual - 2013 - crc 1st edition - 5/8/12
Vehicle Care 10-17
WARNING (CONTINUED)
The coolant warning system is set
for the proper coolant mixture.
With plain water or the wrong
mixture, the engine could get too
hot but you would not get the
overheat warning. The engine
could catch fire and you or
others could be burned. Use a
50/50 mixture of clean, drinkable
water and DEX-COOL coolant.
{WARNING
You can be burned if you spill
coolant on hot engine parts.
Coolant contains ethylene glycol
and it will burn if the engine parts
are hot enough. Do not spill
coolant on a hot engine.
Notice: In cold weather, water
can freeze and crack the engine,
radiator, heater core and other parts. Use the recommended
coolant and the proper coolant
mixture.
1. Remove the coolant surge tank
pressure cap when the cooling
system, including the coolant
surge tank pressure cap and
upper radiator hose, is no
longer hot.
Turn the pressure cap slowly
counterclockwise about
one-quarter of a turn. If you hear
a hiss, wait for that to stop. This
will allow any pressure still left to
be vented out the
discharge hose.
2. Keep turning the pressure cap slowly, and remove it.
3. Fill the coolant surge tank withthe proper DEX-COOL coolant
mixture, to the COLD FILL line.
4. With the coolant surge tank pressure cap off, start the
engine and let it run until the
upper radiator hose can be felt
getting hot. Watch out for the
engine cooling fan(s).
By this time, the coolant level
inside the coolant surge tank
may be lower. If the level is
lower, add more of the proper
DEX-COOL coolant mixture to
Page 244 of 364

Black plate (24,1)GMC Terrain/Terrain Denali Owner Manual - 2013 - crc 1st edition - 5/8/12
10-24 Vehicle Care
3. Try to start the engine in eachgear. The vehicle should start
only in P (Park) or N (Neutral).
If the vehicle starts in any other
position, contact your dealer for
service.
Automatic Transmission
Shift Lock Control
Function Check
{WARNING
When you are doing this
inspection, the vehicle could
move suddenly. If the vehicle
moves, you or others could be
injured.
1. Before starting this check, be sure there is enough room
around the vehicle. It should be
parked on a level surface. 2. Firmly apply the parking brake.
See Parking Brake on
page 9‑31.
Be ready to apply the regular
brake immediately if the vehicle
begins to move.
3. With the engine off, turn the ignition on, but do not start the
engine. Without applying the
regular brake, try to move the
shift lever out of P (Park) with
normal effort. If the shift lever
moves out of P (Park), contact
your dealer for service.
Ignition Transmission
Lock Check
While parked, and with the parking
brake set, try to turn the ignition to
LOCK/OFF in each shift lever
position.
.The ignition should turn to
LOCK/OFF only when the shift
lever is in P (Park).
.The ignition key should come
out only in LOCK/OFF.
Contact your dealer if service is
required.
Park Brake and P (Park)
Mechanism Check
{WARNING
When you are doing this check,
the vehicle could begin to move.
You or others could be injured
and property could be damaged.
Make sure there is room in front
of the vehicle in case it begins to
roll. Be ready to apply the regular
brake at once should the vehicle
begin to move.
Page 247 of 364

Black plate (27,1)GMC Terrain/Terrain Denali Owner Manual - 2013 - crc 1st edition - 5/8/12
Vehicle Care 10-27
Bulb Replacement
For the proper type of replacement
bulbs, seeReplacement Bulbs on
page 10‑31.
For any bulb changing procedure
not listed in this section, contact
your dealer.
Headlamps, Front Turn
Signal, Sidemarker, and
Parking Lamps
1. Low-Beam Headlamp
2. High-Beam Headlamp 3. Sidemarker Lamp
4. Park/Turn Signal Lamp
To replace one of these bulbs:
1. Turn the tire to reach the access
port cap located in the front of
wheel well cover.
2. Remove the screw (1) and turn the access port cap (2)
counterclockwise to remove. 3. If replacing a headlamp bulb,
remove the dust cover cap from
the back of the headlamp
housing by turning the cap
counterclockwise.
4. Turn the bulb socket counterclockwise to remove it
from the lamp assembly.
5. Remove the bulb from the socket or disconnect the bulb
assembly from the harness
connector.
6. Install the new bulb.
7. Reinstall the bulb socket to the lamp assembly, turning
clockwise.
8. Replace the dust cover cap on headlamps.
9. Reinstall the wheel well cover access port cap and secure by
installing the screw.
Page 248 of 364

Black plate (28,1)GMC Terrain/Terrain Denali Owner Manual - 2013 - crc 1st edition - 5/8/12
10-28 Vehicle Care
Fog Lamps
To replace one of these bulbs:
1. Locate the fog lamp assemblyunder the front fascia.
2. Disconnect the bulb socket from the electrical connector, turn,
and pull out the bulb assembly.
3. Remove the old bulb from the bulb socket and push the new
bulb straight into the bulb socket
until it connects. 4. Push the bulb socket into the fog
lamp assembly and turn
clockwise to lock it into place.
5. Reconnect the bulb socket to the electrical connector.
Taillamps, Turn Signal,
Sidemarker, Stoplamps,
and Back-Up Lamps
1. Stop/Tail/Turn Signal/Sidemarker Lamp
2. Auxiliary Taillamp
3. Back-up Lamp
Stop/Tail/Turn Signal/
Sidemarker Lamp
To replace one of these lamps:
1. Open the liftgate. See Liftgate
on page 2‑8.
2. Remove the two screw covers from the taillamp assembly.
3. Remove the two screwssecuring the taillamp assembly.
4. Pull the taillamp assembly out of the vehicle body.
5. Disconnect the lamp wiring harness.
Page 249 of 364
Black plate (29,1)GMC Terrain/Terrain Denali Owner Manual - 2013 - crc 1st edition - 5/8/12
Vehicle Care 10-29
6. Turn the bulb socketcounterclockwise and pull it out.
7. Pull the bulb straight out of the socket.
8. Install the new bulb.
9. Push the bulb socket in and turn it clockwise.
10. Reverse Steps 2–5 to reinstall the lamp assembly.11. Verify that the taillampassembly tab, located at the
bottom of the taillamp
assembly, is aligned to the
fascia bracket before securing
with screws.
Auxiliary Taillamp
To replace one of these lamps:
1. Open the liftgate. See Liftgate
on page 2‑8.
2. Remove the interior trim access panel.
3. Remove the five attachment
nuts (1) securing the taillamp
assembly to the liftgate.
4. Disengage the retaining hook (2) and pull the taillamp assembly
out of the vehicle liftgate.
5. Disconnect the lamp wiring harness.