2016 GMC TERRAIN ECU

GMC Terrain/Terrain Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-9234776) - 2016 - crc - 10/12/15
Vehicle Care 213
Caution
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 tankpressure 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
the coolant surge tank until the
level reaches the COLD
FILL line.
5. Replace the pressure cap. Be sure the pressure cap is
hand-tight.
Caution
If the pressure cap is not tightly
installed, coolant loss and
possible engine damage may
occur. Be sure the cap is properly
and tightly secured.
Check the level in the coolant surge
tank when the cooling system has
cooled down. If the coolant is not at
the proper level, repeat
Steps 1-3 and reinstall the pressure
cap. If the coolant still is not at the
proper level when the system cools
down again, see your dealer.

GMC Terrain/Terrain Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-9234776) - 2016 - crc - 10/12/15
Vehicle Care 221
3. Install the wiper bladeconnector by sliding into the
end of the wiper arm until the
square button on the wiper
blade clicks into place with the
wiper arm.
4. Place the wiper arm with the wiper blade in place back on
the windshield.
Rear Wiper Blade Replacement
The rear wiper blade and wiper arm
have a cover for protection. The
cover must be removed before the
wiper blade can be replaced.
To remove the cover:
1. Slide a plastic tool under thecover and push upward to
unsnap. 2. Slide the cover toward the
wiper blade tip to unhook it
from the blade assembly.
3. Remove the cover.
4. After wiper blade replacement, ensure that cover hook slides
into the slot in the blade
assembly.
5. Snap the cover down to secure.
To replace the wiper blade: 1. Lift the wiper arm away from the windshield.
2. Push the release lever (2) todisengage the 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.
4. Replace the wiper cover.

GMC Terrain/Terrain Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-9234776) - 2016 - crc - 10/12/15
Vehicle Care 223
3. Remove the two screwssecuring the taillamp assembly.
4. Pull the taillamp assembly out of the vehicle body.
5. Disconnect the lamp wiring harness.6. Turn the bulb socket
counterclockwise 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 taillamp
assembly 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 032.
2. Remove the interior trim access panel.

GMC Terrain/Terrain Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-9234776) - 2016 - crc - 10/12/15
224 Vehicle Care
3. Remove the five attachmentnuts (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.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 lamp assembly.
Back–Up Lamp
Removal of the lamp assembly is
not required to replace the back-up
lamp bulb.
To replace one of these lamps: 1. Open the liftgate. See
Liftgate 032.
2. Remove the interior trim access panel.
3. Turn the bulb socketcounterclockwise and pull
it out.
4. Pull the bulb straight out of the socket.
5. Install the new bulb.
6. Push the bulb socket in and turn it clockwise.
7. Reinstall the interior trim access panel.

GMC Terrain/Terrain Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-9234776) - 2016 - crc - 10/12/15
256 Vehicle Care
1. Cable
2. Liftgate Hinges
3. Center of the Wheel
4. Door Striker
To store the flat tire:
1. Remove the cable package.The cable is stored in a plastic
bag under the compact
spare tire.
2. Remove the small center cap by tapping the back of the cap
with the extension of the shaft,
if the vehicle has aluminum
wheels.
3. Put the flat tire in the rear storage area with the valve
stem pointing toward the rear
of the vehicle.
4. Pull the cable (1) through the door striker (4) then the center
of the wheel (3).5. Hook the cable onto theoutside portion of the liftgate
hinges (2).
6. Hook the other end of the cable onto the outside portion of the
liftgate hinge on the other side
of the vehicle.
7. Pull on the cable to make sure it is secure.

GMC Terrain/Terrain Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-9234776) - 2016 - crc - 10/12/15
260 Vehicle Care
2. The vehicles should be closeenough for the jumper cables
to reach, but the vehicles
should not be touching.
Touching could cause
grounding and possible
electrical system damage.
Put both vehicles in P (Park)
and set the parking brake
firmly.
3. Unplug accessories plugged into the cigarette lighter or the
accessory power outlet. Turn
off the radio and all lamps that
are not needed. Turn off the
ignition on both vehicles.
4. Locate the positive (+) and negative (−) terminals on both
vehicles. Some vehicles have
remote jump starting terminals.
{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. 5. The remote positive (+)
terminal (1) is located on the
underhood fuse block, on the
driver side. Lift the red cap to
uncover the terminal.
The remote negative (−)
terminal (2) is a stud behind
the metal tab stamped with
GND (−) near the driver side
strut tower.
6. The jumper cables should be in good working condition with no
loose or missing insulation.
The vehicles could be
damaged if they are not.
7. Connect the red positive (+) cable to the positive (+)
terminal on the vehicle with the
dead battery. Use a remote
positive (+) terminal if the
vehicle has one.
8. Do not let the other end touch metal. Connect it to the
positive (+) terminal of the
good battery. Use a remote
positive (+) terminal if the
vehicle has one. 9. Connect the black negative (−)
cable to the negative (−)
terminal of the good battery.
Use a remote negative (−)
terminal if the vehicle has one.
Do not let the other end touch
anything until the next step.
The other end of the negative
(−) cable does not go to the
dead battery. It goes to a
heavy, unpainted metal engine
part or to a remote negative (−)
terminal on the vehicle with the
dead battery.
10. Connect the other end of the negative (−) cable away from
the dead battery, but not near
engine parts that move.
11. Start the vehicle with the good battery and run the engine.
12. Press the unlock symbol on the Remote Keyless Entry (RKE)
transmitter to disarm the
security system, if equipped.
13. Try to start the vehicle that had the dead battery. If it will not
start after a few tries, it needs
service.

GMC Terrain/Terrain Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-9234776) - 2016 - crc - 10/12/15
Vehicle Care 261
Caution
If the jumper cables are
connected or removed in the
wrong order, electrical shorting
may occur and damage the
vehicle. The repairs would not be
covered by the vehicle warranty.
Always connect and remove the
jumper cables in the correct order,
making sure that the cables do
not touch each other or other
metal.
Jumper Cable Removal
Reverse the sequence exactly when
removing the jumper cables.
After starting the disabled vehicle
and removing the jumper cables,
allow it to idle for several minutes.
Towing the Vehicle
Caution
Incorrectly towing a disabled
vehicle may cause damage. The
damage would not be covered by
the vehicle warranty.
Do not lash or hook to
suspension components. Use the
proper straps around the tires to
secure the vehicle.
Have the vehicle towed on a flatbed
car carrier. A wheel lift tow truck
could damage the vehicle.
Consult your dealer or a
professional towing service if the
disabled vehicle must be towed.
Recreational Vehicle
Towing
Recreational vehicle towing means
towing the vehicle behind another
vehicle –such as behind a motor
home. The two most common types
of recreational vehicle towing are known as dinghy towing and dolly
towing. Dinghy towing is towing the
vehicle with all four wheels on the
ground. Dolly towing is towing the
vehicle with two wheels on the
ground and two wheels up on a
device known as a dolly.
Here are some important things to
consider before recreational vehicle
towing:
.
The towing capacity of the
towing vehicle. Be sure to read
the tow vehicle manufacturer's
recommendations.
. How far the vehicle will be
towed. Some vehicles have
restrictions on how far and how
long they can tow.
. The proper towing equipment.
See your dealer or trailering
professional for additional advice
and equipment
recommendations.
. If the vehicle is ready to be
towed. Just as preparing the
vehicle for a long trip, make sure
the vehicle is prepared to be
towed.

GMC Terrain/Terrain Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-9234776) - 2016 - crc - 10/12/15
262 Vehicle Care
Dinghy Towing
Front-wheel-drive and
all-wheel-drive vehicles may be
dinghy towed from the front. These
vehicles can also be towed by
placing them on a platform trailer
with all four wheels off of the
ground. For other towing options,
see“Dolly Towing” following in this
section.
For vehicles being dinghy towed,
the vehicle should be run at the
beginning of each day and at each
RV fuel stop for about five minutes.
This will ensure proper lubrication of
transmission components.
To tow the vehicle from the front
with all four wheels on the ground:
1. Position the vehicle to be towed and secure it to the
towing vehicle.
2. Turn the ignition key to ON/RUN.
3. Shift the transmission to N (Neutral).
4. Turn the ignition key to ACC/ ACCESSORY.
5. Turn all accessories off.
6. To prevent the battery from draining while the vehicle is
being towed, remove fuse 32,
the Discrete Logic Ignition
Switch fuse, from the
instrument panel fuse block
and store it in a safe location.
See Instrument Panel Fuse
Block 0229.Caution
If the vehicle is towed without
performing each of the steps
listed under “Dinghy Towing,” the
automatic transmission could be
damaged. Be sure to follow all
steps of the dinghy towing
procedure prior to and after
towing the vehicle.
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.
Once the destination is reached: 1. Set the parking brake.
2. Shift the transmission to P (Park).
3. Turn the ignition key to LOCK/OFF.