2012 GMC TERRAIN sensor

Black plate (49,1)GMC Terrain Owner Manual (Include Mex) - 2012
Driving and Operating 9-49
When the vehicle crosses a
detected lane marking, the LDW
indicator will flash and three beeps
will sound. LDW will not warn if the
turn signal is on or if a sharp
maneuver is made.
How the System Works
The LDW camera sensor is on the
windshield ahead of the rearview
mirror.
To turn LDW on and off, press the
LANE DEPART control on the
steering wheel. The control indicator
will light when LDW is on.When the vehicle is started, the
LDW indicator on the instrument
panel will come on briefly.
LDW operates at speeds of 56 km
(35 mph) or greater. If LDW is on,
the LDW indicator will appear green
if the system detects a left or right
lane marking. This indicator will
change to amber, flash, and three
beeps will sound if the vehicle
crosses a detected lane marking
without using the turn signal.

Black plate (50,1)GMC Terrain Owner Manual (Include Mex) - 2012
9-50 Driving and Operating
To change the volume of the
warning chime, see“Chime Volume”
under Vehicle Personalization on
page 5‑33 for more information.
When the System Does Not
Seem To Work Properly
If the LDW symbol does not appear:
.The lane markings on the road
may not be seen.
.The camera sensor may be
blocked by dirt, snow or ice.
.The windshield may be
damaged.
.The weather may be limiting
visibility.
This is normal operation; the vehicle
does not need service. Clean the
windshield.
{WARNING
If the LDW camera sensor is
blocked by dirt, snow, or ice, or if
the windshield is damaged, it may
not detect a vehicle ahead. LDW
may not help avoid a collision
under these conditions. Do not
rely on LDW when the camera is
blocked by snow, ice, or dirt.
Keep the windshield clean.
{WARNING
If the headlamps are not cleaned
or properly aimed, the LDW
system may not detect lanes
ahead. LDW may not help avoid a
collision under these conditions.
Keep the headlamps clean and
properly aimed. LDW warnings may occasionally
occur due to tar marks, shadows,
cracks in the road, or other road
imperfections. This is normal system
operation, the vehicle does not need
service.
LDW Messages
FRONT CAMERA BLOCKED,
CLEAN WINDSHIELD:
This
message may appear because the
front camera is blocked and cannot
operate properly. It may also
activate during heavy rain or due to
road spray.
LANE DEPARTURE SYSTEM
UNAVAILABLE: This message
may appear if LDW does not
activate due to a temporary
condition.
SERVICE FRONT CAMERA: This
message may appear to indicate
that LDW is not working properly.
If this message remains on after
continued driving, the system needs
service. Take the vehicle to your
dealer.

Black plate (40,1)GMC Terrain Owner Manual (Include Mex) - 2012
10-40 Vehicle Care
Mini Fuses Usage17 Transmission
Control Module
Battery
18 Trailer Parking Light
19 AIR Pump Solenoid
20 Engine Control
Module Battery
21 Canister Vent
22 Trailer Left Side (If
Equipped)
23 Lift Gate Module
24 Power Lumbar
25 Trailer Right Side (If
Equipped)
26 Rear Accessory
Power Outlet
27 Memory Mirror
Module Mini Fuses Usage
28 Regulated Voltage
Control Battery
Sensor
29 Front Wiper
30 Rear Wiper
31 Air Conditioning
Compressor
32 Rear Latch
33 Heated Mirrors
34 Horn
35 Right High‐Beam
Headlamp
36 Left High‐Beam
Headlamp
37 Ignition Even Coil
38 Ignition Odd Coil
39 Windshield Washer
40 Front Fog Lamps Mini Fuses Usage
41 Post Catalytic
Converter Oxygen
Sensor
42 Engine Control
Module
43 Pre–Catalytic
Converter Oxygen
Sensor
44 Transmission
Control Module
45 Mirror
46 Chassis Control
Module Ignition
47 Spare
48 Rear Drive Module
49 Lift Gate Module
Logic
50 Instrument Panel
Fuse Block Ignition

Black plate (52,1)GMC Terrain Owner Manual (Include Mex) - 2012
10-52 Vehicle Care
For additional information
regarding how much weight the
vehicle can carry, and an
example of the Tire and Loading
Information label, seeVehicle
Load Limits on page 9‑16. How
the vehicle is loaded affects
vehicle handling and ride
comfort. Never load the vehicle
with more weight than it was
designed to carry.
When to Check
Check the tires once a month or
more. Do not forget the compact
spare tire, if the vehicle has one.
The cold compact spare should
be at 420 kPa (60 psi). For
additional information regarding
the compact spare tire, see
Compact Spare Tire on
page 10‑75. How to Check
Use a good quality pocket-type
gauge to check tire pressure.
Proper tire inflation cannot be
determined by looking at the tire.
Check the tire inflation pressure
when the tires are cold, meaning
the vehicle has not been driven
for at least three hours or no
more than 1.6 km (1 mi).
Remove the valve cap from the
tire valve stem. Press the tire
gauge firmly onto the valve to
get a pressure measurement.
If the cold tire inflation pressure
matches the recommended
pressure on the Tire and
Loading Information label, no
further adjustment is necessary.
If the inflation pressure is low,
add air until the recommended
pressure is reached. If the
inflation pressure is high, press
on the metal stem in the center
of the tire valve to release air.
Recheck the tire pressure with
the tire gauge.
Return the valve caps on the
valve stems to prevent leaks
and keep out dirt and moisture.
Tire Pressure Monitor
System
The Tire Pressure Monitor System
(TPMS) uses radio and sensor
technology to check tire pressure
levels. The TPMS sensors monitor
the air pressure in your tires and
transmit tire pressure readings to a
receiver located in the vehicle.

Black plate (54,1)GMC Terrain Owner Manual (Include Mex) - 2012
10-54 Vehicle Care
Federal Communications
Commission (FCC) Rules and
with Industry Canada
Standards
SeeRadio Frequency Statement on
page 13‑21 for information
regarding Part 15 of the Federal
Communications Commission (FCC)
Rules and with Industry Canada
Standards RSS-GEN/210/220/310.
Tire Pressure Monitor
Operation
This vehicle may have a Tire
Pressure Monitor System (TPMS).
The TPMS is designed to warn the
driver when a low tire pressure
condition exists. TPMS sensors are
mounted onto each tire and wheel
assembly, excluding the spare tire
and wheel assembly. The TPMS
sensors monitor the air pressure in
the tires and transmits the tire
pressure readings to a receiver
located in the vehicle.
When a low tire pressure condition
is detected, the TPMS illuminates
the low tire pressure warning light
located on the instrument cluster.
If the warning light comes on, stop
as soon as possible and inflate the
tires to the recommended pressure
shown on the tire loading
information label. See Vehicle Load
Limits on page 9‑16.
A message to check the pressure in
a specific tire displays in the Driver
Information Center (DIC). The low
tire pressure warning light and the
DIC warning message come on at
each ignition cycle until the tires are
inflated to the correct inflation
pressure. Using the DIC, tire
pressure levels can be viewed. For
additional information and details about the DIC operation and
displays see
Driver Information
Center (DIC) on page 5‑23.
The low tire pressure warning light
may come on in cool weather when
the vehicle is first started, and then
turn off as the vehicle is driven. This
could be an early indicator that the
air pressure is getting low and
needs to be inflated to the proper
pressure.
A Tire and Loading Information label
shows the size of the original
equipment tires and the correct
inflation pressure for the tires when
they are cold. See Vehicle Load
Limits on page 9‑16, for an example
of the Tire and Loading Information
label and its location. Also see Tire
Pressure on page 10‑51.

Black plate (55,1)GMC Terrain Owner Manual (Include Mex) - 2012
Vehicle Care 10-55
The TPMS can warn about a low
tire pressure condition but it does
not replace normal tire
maintenance. SeeTire Inspection
on page 10‑57, Tire Rotation on
page 10‑57 andTires on
page 10‑44.
Notice: Tire sealant materials are
not all the same. A non-approved
tire sealant could damage the
TPMS sensors. TPMS sensor
damage caused by using an
incorrect tire sealant is not
covered by the vehicle warranty.
Always use only the
GM-approved tire sealant
available through your dealer or
included in the vehicle.TPMS Malfunction Light and
Message
The TPMS will not function properly
if one or more of the TPMS sensors
are missing or inoperable. When the
system detects a malfunction, the
low tire pressure warning light
flashes for about one minute and
then stays on for the remainder of
the ignition cycle. A DIC warning
message also displays. The low tire
pressure warning light and DIC
warning message come on at each
ignition cycle until the problem is
corrected. Some of the conditions
that can cause these to come
on are:
.One of the road tires has been
replaced with the spare tire. The
spare tire does not have a
TPMS sensor. The malfunction
light and DIC message should
go off after the road tire is
replaced and the sensor
matching process is performed
successfully. See "TPMS Sensor
Matching Process" later in this
section.
.The TPMS sensor matching
process was not done or not
completed successfully after
rotating the tires. The
malfunction light and the DIC
message should go off after
successfully completing the
sensor matching process. See
"TPMS Sensor Matching
Process" later in this section
.One or more TPMS sensors are
missing or damaged. The DIC
message and the TPMS
malfunction light should go off
when the TPMS sensors are
installed and the sensor
matching process is performed
successfully. See your dealer for
service.
.Replacement tires or wheels do
not match the original equipment
tires or wheels. Tires and wheels
other than those recommended
could prevent the TPMS from
functioning properly. See Buying
New Tires on page 10‑59.

Black plate (56,1)GMC Terrain Owner Manual (Include Mex) - 2012
10-56 Vehicle Care
.Operating electronic devices or
being near facilities using radio
wave frequencies similar to the
TPMS could cause the TPMS
sensors to malfunction.
If the TPMS is not functioning
properly, it cannot detect or signal a
low tire condition. See your dealer
for service if the TPMS malfunction
light and DIC message comes on
and stays on.
TPMS Sensor Matching
Process
Each TPMS sensor has a unique
identification code. The identification
code needs to be matched to a new
tire/wheel position after rotating the
tires or replacing one or more of the
TPMS sensors. The TPMS sensor
matching process should also be
performed after replacing a spare
tire with a road tire containing the
TPMS sensor. The malfunction light
and the DIC message should go off
at the next ignition cycle. The
sensors are matched to the
tire/wheel positions, using a TPMS relearn tool, in the following order:
driver side front tire, passenger side
front tire, passenger side rear tire,
and driver side rear. See your
dealer for service or to purchase a
relearn tool.
There are two minutes to match the
first tire/wheel position, and
five minutes overall to match all four
tire/wheel positions. If it takes
longer, the matching process stops
and must be restarted.
The TPMS sensor matching
process is:
1. Set the parking brake.
2. Turn the ignition to ON/RUN with
the engine off.
3. Use the MENU button to select the Vehicle Information Menu in
the Driver Information Center
(DIC). Use the arrow keys to
scroll to the Tire Pressure
screen. 4. Press the SET/CLR button to
begin the sensor matching
process.
A message requesting
acceptance of the process
should display.
5. Press the SET/CLR button again to confirm the selection.
The horn sounds twice to signal
the receiver is in relearn mode
and the TIRE LEARNING
ACTIVE message displays on
the DIC screen.
6. Start with the driver side front tire.
7. Place the relearn tool against the tire sidewall, near the valve
stem. Then press the button to
activate the TPMS sensor.
A horn chirp confirms that the
sensor identification code has
been matched to this tire and
wheel position.

Black plate (57,1)GMC Terrain Owner Manual (Include Mex) - 2012
Vehicle Care 10-57
8. Proceed to the passenger sidefront tire, and repeat the
procedure in Step 7.
9. Proceed to the passenger side rear tire, and repeat the
procedure in Step 7.
10. Proceed to the driver side rear tire, and repeat the procedure
in Step 7. The horn sounds two
times to indicate the sensor
identification code has been
matched to the driver side rear
tire, and the TPMS sensor
matching process is no longer
active. The TIRE LEARNING
ACTIVE message on the DIC
display screen goes off.
11. Turn the ignition to LOCK/OFF.
12. Set all four tires to the recommended air pressure
level as indicated on the Tire
and Loading Information label.Tire Inspection
We recommend that the tires,
including the spare tire, if the
vehicle has one, be inspected
for signs of wear or damage at
least once a month.
Replace the tire if:
.The indicators at three or
more places around the tire
can be seen.
.There is cord or fabric
showing through the tire's
rubber.
.The tread or sidewall is
cracked, cut, or snagged
deep enough to show cord or
fabric.
.The tire has a bump, bulge,
or split.
.The tire has a puncture, cut,
or other damage that cannot
be repaired well because of
the size or location of the
damage.
Tire Rotation
Tires should be rotated every
12 000 km (7,500 mi). See
Maintenance Schedule on
page 11‑3.
Tires are rotated to achieve a
uniform wear for all tires. The
first rotation is the most
important.
Any time unusual wear is
noticed, rotate the tires as soon
as possible and check the wheel
alignment. Also check for
damaged tires or wheels. See
When It Is Time for New Tires
on page 10‑58 andWheel
Replacement on page 10‑64.