2007 GMC SIERRA sensor

When the DRL are on, only your DRL lamps will
be on. The taillamps, sidemarker, and other lamps
will not be on. The instrument panel back
lighting will not be on either.
When it begins to get dark, the automatic headlamp
system will switch from DRL to the headlamps.
When the headlamp switch is turned off, the
headlamps will go off.
Automatic Headlamp System
When it is dark enough outside, the automatic
headlamp system will turn on the headlamps at the
normal brightness, along with the taillamps,
sidemarker, parking lamps, and the instrument
panel lights. The radio back lighting will also be
dimly lit.
To turn off the automatic headlamp system, turn
the exterior lamps switch to the off position.
Turning off the automatic headlamp system with
the headlamp switch is not available for vehicles
rst sold in Canada.
Your vehicle has a light sensor located on the top
of the instrument panel in the defroster grille
that regulates when the automatic headlamps turn
on. Be sure it is not covered, or the headlamps
will come on whenever the ignition is on.The system may also turn on the headlamps when
driving through a parking garage, heavy overcast
weather, or a tunnel. This is normal.
There is a delay in the transition between the
daytime and nighttime operation of the Daytime
Running Lamps (DRL) and the automatic headlamp
systems so that driving under bridges or bright
overhead street lights does not affect the system.
The DRL and automatic headlamp system will only
be affected when the light sensor detects a change
in lighting lasting longer than the delay.
If you start your vehicle in a dark garage, the
automatic headlamp system will come on
immediately. Once you leave the garage, it will
take approximately one minute for the automatic
headlamp system to change to DRL if it is
bright enough outside. During that delay, your
instrument panel cluster may not be as bright as
usual. Make sure your instrument panel brightness
control is in the full bright position. SeeInstrument
Panel Brightness on page 225.
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EPM works to prevent excessive discharge of the
battery. It does this by balancing the generator’s
output and the vehicle’s electrical needs. It
can increase engine idle speed to generate more
power, whenever needed. It can temporarily
reduce the power demands of some accessories.
Normally, these actions occur in steps or levels,
without being noticeable. In rare cases at the
highest levels of corrective action, this action may
be noticeable to the driver. If so, a Driver
Information Center (DIC) message might be
displayed, such as Battery Saver Active or Service
Battery Charging System. If this message is
displayed, it is recommended that the driver
reduce the electrical loads as much as possible.
SeeDIC Warnings and Messages on page 279.
Battery Run-Down Protection
This feature shuts off the dome and reading
lamps, if they are left on for more than 10 minutes
when the ignition is turned off. The cargo lamp
will shut off after 20 minutes. This will keep
the battery from running down.
Ultrasonic Rear Parking
Assist (URPA)
If your vehicle has the Ultrasonic Rear Parking
Assist (URPA) system it is designed to help you
park while in Reverse (R). It operates only at
speeds less than 5 mph (8 km/h). URPA helps
make parking easier and helps you avoid colliding
with objects such as parked vehicles. The URPA
system detects objects that are close to the rear of
the vehicle which are at least 10 inches (25.4 cm)
off the ground and below hood or trunk level. The
system detects objects up to 8 feet (2.5 m) behind
your vehicle. The URPA sensors determine how
close these objects are from your bumper within
this area.
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When the System Does Not Seem to
Work Properly
If the URPA system will not activate due to a
temporary condition, the message PARK ASSIST
OFF will be displayed on the DIC screen and a
red light will come on the URPA display when the
shift lever is moved into REVERSE (R). This
occurs under the following conditions:
The driver disables the system.
The parking brake pedal is depressed.
A trailer was attached to your vehicle, or a
bicycle or an object was hanging out of your
trunk during your last drive when you turned off
the vehicle. If the attached objects are removed
from your vehicle before the start of your next
drive, the system will return to normal operation
unless an object is detected when the vehicle is
shifted into REVERSE (R). If this occurs, URPA
assumes the object is still attached, so you will
have to wait until the vehicle is driven forward
above 15 mph (25 km/h) before URPA will
return to normal operation.
The ultrasonic sensors are not kept clean. So,
be sure to keep your vehicle’s rear bumper free
of mud, dirt, snow, ice, and slush. For cleaning
instructions, seeWashing Your Vehicle on
page 601. If the DIC still displays the PARK
ASSIST OFF message after cleaning the
bumper and driving forward at a speed of at
least 15 mph (25 km/h), see your dealer.
Other conditions that may affect system
performance include vibrations from a
jackhammer or the compression of air brakes
on a very large truck or other mechanical
devices that interfere with URPA performance.
When URPA is disabled without driver action
and the driver attempts to turn URPA back on
by pressing the rear park aid button, the
indicator light will ash for 3 seconds and then
stay lit to indicate that URPA is off.
As always, drivers should use care when backing
up a vehicle. Always look behind you, being
sure to check for other vehicles, obstructions and
blind spots.
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2. Set the driver’s and passenger’s temperature.
To nd your comfort setting, start with a 74°F
(23°C) temperature setting and allow about
20 minutes for the system to regulate. Use the
driver’s or passenger’s temperature buttons to
adjust the temperature setting as necessary.
If you choose the temperature setting of 60°F
(15°C), the system will remain at the maximum
cooling setting. If you choose the temperature
setting of 90°F (32°C), the system will remain
at the maximum heat setting. Choosing either
maximum setting will not cause the vehicle to
heat or cool any faster.
Be careful not to cover the solar sensor located on
the top of the instrument panel near the
windshield. This sensor regulates air temperature
based on sun load and also turns on your
headlamps. For more information on the solar
sensor, see “Sensors” later in this section.
To avoid blowing cold air in cold weather, the
system will delay turning on the fan until warm air
is available. The length of delay depends on
the engine coolant temperature. Pressing the fan
switch will override this delay and change the
fan to a selected speed.O(On/Off):Press this button to turn off the
climate control system. Outside air will still enter the
vehicle, and will be directed to the oor. This
direction can be changed by pressing the mode
button. Recirculation can be selected once you
have selected vent or bi-level mode. The
temperature can also be adjusted using either
temperature button. If you adjust the air delivery
mode or temperature settings with the system off,
the display will illuminate briey to show you the
settings and then return to off. Press the on/off
button or the up down arrows on the fan switch, the
defrost button, AUTO button, or the air conditioning
button to turn the system on when it is off.
Manual Operation
You may manually adjust the air delivery mode or
fan speed.
y9 z(Fan):The buttons with the fan symbols
allow you to manually adjust the fan speed.
Press the up arrow to increase fan speed and the
down arrow to decrease fan speed.
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Sensors
The solar sensor, located in the defrost grille,
middle of the instrument panel, monitors the solar
radiation. Do not cover the solar sensor or the
system will not work properly.The interior temperature sensor, located in the
headliner, measures the temperature of the
air inside your vehicle.
There is also an exterior temperature sensor
located behind the front grille. This sensor reads the
outside air temperature and helps maintain the
temperature inside the vehicle. Any cover on the
front of the vehicle could cause a false reading in
the displayed temperature on the rearview mirror.
The climate control system uses the information
from these sensors to maintain your comfort setting
by adjusting the outlet temperature, fan speed, and
the air delivery mode. The system may also supply
cooler air to the side of the vehicle facing the sun.
The recirculation mode will also be used as needed
to maintain cool outlet temperatures.
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Airbag Readiness Light
There is an airbag readiness light on the instrument
panel cluster, which shows the airbag symbol. The
system checks the airbag’s electrical system for
malfunctions. The light tells you if there is an
electrical problem. The system check includes the
airbag sensors, the airbag modules, the wiring and
the crash sensing and diagnostic module and, if
equipped, the passenger sensing system. For more
information on the airbag system, seeAirbag
System on page 83.
This light will come on
when you start your
vehicle, and it will ash
for a few seconds.
This means the system
is ready.
If the airbag readiness light stays on after the
vehicle is started or comes on while you are
driving, the airbag system may not be working
properly. Have your vehicle serviced right away.
Airbag Off Light
If your vehicle has an airbag on-off switch, it also
has a passenger airbag status indicator located
in the overhead console.
When the ignition key is turned to RUN or START,
the passenger airbag status indicator ON and
OFF, or the symbol for on and off, will light
for several seconds as a system check. Then,
after several more seconds, the status indicator
ON or OFF, or either the on or off symbol, will light
to let you know the status of the right front
passenger’s frontal airbag.
When you manually turn the right front passenger’s
airbag off using the airbag on-off switch in the
glove box, the indicator light OFF or the off symbol
will come on and stay on to remind you that the
airbag has been turned off.
United StatesCanada
250

OUTPUT shows the power output to the trailer
anytime a trailer with electric brakes is connected.
Output is displayed in 0 to 10 bars. Dashes
may appear in the OUTPUT display. See
“Integrated Trailer Brake Control System” under
Towing a Trailer on page 445for more information.
Engine Hours
Press the vehicle information button until ENGINE
HOURS displays. This display shows the total
number of hours the engine has run.
Relearn Tire Positions
If your vehicle has a Tire Pressure Monitor (TPM)
system, after rotating the tires or after replacing a
tire or sensor, the system must re-learn the tire
positions. To re-learn the tire positions, seeTire
Pressure Monitor System on page 561. SeeTire
Inspection and Rotation on page 565andDIC
Warnings and Messages on page 279for more
information.
Relearn Remote Key
This display allows you to match Remote Keyless
Entry (RKE) transmitters to your vehicle. To
match an RKE transmitter to your vehicle, do the
following:
1. Press the vehicle information button until
PRESS
VTO RELEARN REMOTE KEY
displays.
2. Press the set/reset button until REMOTE KEY
LEARNING ACTIVE is displayed.
3. Press and hold the lock and unlock buttons
on the rst transmitter at the same time for
about 15 seconds.
On vehicles with memory recall seats, the rst
transmitter learned will match driver 1 and
the second will match driver 2.
A chime will sound indicating that the
transmitter is matched.
4. To match additional transmitters at this time,
repeat Step 3.
Each vehicle can have a maximum of
eight transmitters matched to it.
5. To exit the programming mode, you must
cycle the key to LOCK.
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To adjust this setting, see “Integrated Trailer
Brake Control System” underTowing a Trailer on
page 445for more information.
OUTPUT shows the power output to the trailer
anytime a trailer with electric brakes is connected.
Output is displayed in 0 to 10 bars. Dashes
may appear in the OUTPUT display. See
“Integrated Trailer Brake Control System” under
Towing a Trailer on page 445for more information.
Oil Life
To access this display, the vehicle must be in
PARK (P). Press the trip odometer reset stem until
OIL LIFE REMAINING displays. This display
shows an estimate of the oil’s remaining useful
life. If you see 99% OIL LIFE REMAINING on the
display, that means 99% of the current oil life
remains. The engine oil life system will alert you to
change your oil on a schedule consistent with
your driving conditions.
When the remaining oil life is low, the CHANGE
ENGINE OIL SOON message will appear on the
display. See “CHANGE ENGINE OIL SOON” under
DIC Warnings and Messages on page 279. You
should change your oil as soon as you can.SeeEngine Oil (Gasoline Engine) on page 500.In
addition to the engine oil life system monitoring the
oil life, additional maintenance is recommended in
the Maintenance Schedule in this manual. See
Scheduled Maintenance (Gasoline Engine) on
page 623for more information.
Remember, you must reset the OIL LIFE display
yourself after each oil change. It will not reset
itself. Also, be careful not to reset the OIL LIFE
display accidentally at any time other than
when the oil has just been changed. It cannot be
reset accurately until the next oil change. To
reset the engine oil life system, seeEngine Oil
Life System on page 503.
Relearn Tire Positions
To access this display, the vehicle must be in
PARK (P). If your vehicle has a Tire Pressure
Monitor (TPM) system, after rotating the tires or
after replacing a tire or sensor, the system
must re-learn the tire positions. To re-learn the tire
positions, seeTire Pressure Monitor System on
page 561. SeeTire Inspection and Rotation
on page 565andDIC Warnings and Messages on
page 279for more information.
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