ignition GMC SIERRA 2007 Repair Manual

Tow/Haul Mode Light
This light comes on
when the Tow/Haul
mode has been
activated.
For more information, seeTow/Haul Mode on
page 144.
Fuel Gage
When the ignition is on, the fuel gage tells you
about how much fuel you have left in your tank.The gage will rst indicate empty before you are
out of fuel, and you should get more fuel as
soon as possible.
When the fuel tank is low the FUEL LEVEL LOW
message will appear. SeeDIC Warnings and
Messages on page 279for more information.
Here are some situations you may experience with
your fuel gage. None of these indicate a problem
with the fuel gage.
At the gas station, the fuel pump shuts off
before the gage reads full.
It takes a little more or less fuel to ll up than
the fuel gage indicated. For example, the
gage may have indicated the tank was half full,
but it actually took a little more or less than
half the tank’s capacity to ll the tank.
The gage goes back to empty when you turn
off the ignition.
If you have a diesel engine, see “Fuel Gage” in
the Diesel Engine Supplement.
United StatesCanada
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Low Fuel Warning Light
This light, under the fuel
gage, will come on
briey when you
are starting the engine.
This light and a chime will come on when the fuel
tank is low on fuel. There will also be a “FUEL
LEVEL LOW” message on the Driver Information
Center, seeDIC Warnings and Messages on
page 279for more information. When you add fuel
this light and message should go off. If it does
not, have your vehicle serviced.
Driver Information Center (DIC)
Your vehicle has a Driver Information Center (DIC).
The DIC displays information about your vehicle. It
also displays warning messages if a system
problem is detected.
All messages will appear in the DIC display
located below the tachometer in the instrument
panel cluster.
The DIC comes on when the ignition is on. After a
short delay, the DIC will display the information
that was last displayed before the engine was
turned off.
If your vehicle has DIC buttons, see “DIC
Operation and Displays (With DIC Buttons)” later
in this section andDIC Vehicle Customization
(With DIC Buttons) on page 289for the displays
available.
If your vehicle does not have DIC buttons, see
“DIC Operation and Displays (Without DIC
Buttons)” later in this section for the displays
available.
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The trip odometer has a feature called the
retro-active reset. This can be used to set the trip
odometer to the number of miles (kilometers)
driven since the ignition was last turned on. This
can be used if the trip odometer is not reset at the
beginning of the trip.
To use the retro-active reset feature, press and
hold the set/reset button for at least four seconds.
The trip odometer will display the number of
miles (mi) or kilometers (km) driven since the
ignition was last turned on and the vehicle
was moving. Once the vehicle begins moving, the
trip odometer will accumulate mileage. For
example, if the vehicle was driven 5 miles (8 km)
before it is started again, and then the retro-active
reset feature is activated, the display will show
5 miles (8 km). As the vehicle begins moving, the
display will then increase to 5.1 miles (8.2 km),
5.2 miles (8.4 km), etc.
If the retro-active reset feature is activated after
the vehicle is started, but before it begins moving,
the display will show the number of miles (mi)
or kilometers (km) that were driven during the last
ignition cycle.Fuel Range
Press the trip/fuel button until FUEL RANGE
displays. This display shows the approximate
number of remaining miles (mi) or kilometers (km)
the vehicle can be driven without refueling. The
display will show LOW if the fuel level is low.
The fuel range estimate is based on an average of
the vehicle’s fuel economy over recent driving
history and the amount of fuel remaining in the fuel
tank. This estimate will change if driving
conditions change. For example, if driving in traffic
and making frequent stops, this display may
read one number, but if the vehicle is driven on a
freeway, the number may change even though
the same amount of fuel is in the fuel tank. This is
because different driving conditions produce
different fuel economies. Generally, freeway
driving produces better fuel economy than city
driving. Fuel range cannot be reset.
270

Average Economy
Press the trip/fuel button until AVG ECONOMY
displays. This display shows the approximate
average miles per gallon (mpg) or liters per
100 kilometers (L/100 km). This number is
calculated based on the number of mpg (L/100 km)
recorded since the last time this menu item was
reset. To reset AVG ECONOMY, press and
hold the set/reset button.
Fuel Used
Press the trip/fuel button until FUEL USED
displays. This display shows the number of
gallons (gal) or liters (L) of fuel used since the last
reset of this menu item. To reset the fuel used
information, press and hold the set/reset button
while FUEL USED is displayed.
Timer
Press the trip/fuel button until TIMER displays.
This display can be used as a timer.To start the timer, press the set/reset button while
TIMER is displayed. The display will show the
amount of time that has passed since the timer was
last reset, not including time the ignition is off. Time
will continue to be counted as long as the ignition is
on, even if another display is being shown on the
DIC. The timer will record up to 99 hours,
59 minutes and 59 seconds (99:59:59) after which
the display will return to zero.
To stop the timer, press the set/reset button briey
while TIMER is displayed.
To reset the timer to zero, press and hold the
set/reset button while TIMER is displayed.
Transmission Temperature
Press the trip/fuel button until TRANS TEMP
displays. This display shows the temperature of
the automatic transmission uid in either degrees
Fahrenheit (°F) or degrees Celsius (°C).
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Blank Display
This display shows no information.
DIC Operation and Displays
(Without DIC Buttons)
If your vehicle does not have DIC buttons, the
information below explains the operation of
this system.
The DIC has different displays which can be
accessed by pressing the trip odometer reset stem
located on the instrument panel cluster. Pressing
the trip odometer reset stem will also turn off,
or acknowledge, DIC messages.
The DIC displays trip and vehicle system
information, and warning messages if a system
problem is detected.
If your vehicle does not have DIC buttons, you
can use the trip odometer reset stem to view the
following displays: odometer, engine hours,
trip odometer, transmission temperature, trailer
brake gain and output information for vehicles withthe Integrated Trailer Brake Control (ITBC)
system, oil life, Tire Pressure Monitor (TPM)
system programming for vehicles with a TPM
system, Remote Keyless Entry (RKE) transmitter
programming, and display language.
If your vehicle has DIC buttons, you can use the
trip odometer reset stem to view the following
displays: odometer, engine hours, trip odometer,
and display language.
Trip Odometer Reset Stem Menu Items
Odometer
Press the trip odometer reset stem until
ODOMETER displays. This display shows the
distance the vehicle has been driven in either
miles (mi) or kilometers (km).
Engine Hours
To display the ENGINE HOURS, place the ignition
in LOCK or ACCESSORY, then press and hold
the trip odometer reset stem for four seconds while
viewing the ODOMETER. This display shows
the total number of hours the engine has run.
275

Trip Odometer
Press the trip odometer reset stem until TRIP
displays. This display shows the current distance
traveled in either miles (mi) or kilometers (km)
since the last reset for the trip odometer.
The trip odometer can be reset to zero by pressing
and holding the trip odometer reset stem while
the trip odometer is displayed.
The trip odometer has a feature called the
retro-active reset. This can be used to set the trip
odometer to the number of miles (kilometers)
driven since the ignition was last turned on. This
can be used if the trip odometer is not reset at the
beginning of the trip.
To use the retro-active reset feature, press and
hold the trip odometer reset stem for at least
four seconds. The trip odometer will display the
number of miles (mi) or kilometers (km) driven
since the ignition was last turned on and the
vehicle was moving. Once the vehicle begins
moving, the trip odometer will accumulate mileage.
For example, if the vehicle was driven 5 miles
(8 km) before it is started again, and then
the retro-active reset feature is activated, thedisplay will show 5 miles (8 km). As the vehicle
begins moving, the display will then increase
to 5.1 miles (8.2 km), 5.2 miles (8.4 km), etc.
If the retro-active reset feature is activated after
the vehicle is started, but before it begins moving,
the display will show the number of miles (mi)
or kilometers (km) that were driven during the last
ignition cycle.
Transmission Temperature
Press the trip odometer reset stem until TRANS
TEMP displays. This display shows the
temperature of the automatic transmission uid in
either degrees Fahrenheit (°F) or degrees
Celsius (°C).
Trailer Gain and Output
On vehicles with the Integrated Trailer Brake
Control (ITBC) system, the trailer brake display
appears in the DIC. Press the trip odometer reset
stem until TRAILER GAIN and OUTPUT display.
TRAILER GAIN shows the trailer gain setting. This
setting can be adjusted from 0.0 to 10.0 with
either a trailer connected or disconnected.
276

DIC Warnings and Messages
Messages are displayed on the DIC to notify the
driver that the status of the vehicle has changed
and that some action may be needed by the driver
to correct the condition. Multiple messages may
appear one after another.
Some messages may not require immediate
action, but you can press any of the DIC buttons
on the instrument panel or the trip odometer
reset stem on the instrument panel cluster
to acknowledge that you received the messages
and to clear them from the display.
Some messages cannot be cleared from the DIC
display because they are more urgent. These
messages require action before they can be
cleared. You should take any messages that
appear on the display seriously and remember that
clearing the messages will only make the
messages disappear, not correct the problem.The following are the possible messages that can
be displayed and some information about them.
If your vehicle has the DURAMAX®Diesel engine,
see the DURAMAX®Diesel manual for more
information.
CHANGE ENGINE OIL SOON
This message displays when the engine oil needs
to be changed. When you change the engine oil, be
sure to reset the CHANGE ENGINE OIL SOON
message. SeeEngine Oil Life System on page 503
for information on how to reset the message. This
message clears itself after 10 seconds until the next
ignition cycle or until the message is reset. See
Engine Oil (Gasoline Engine) on page 500and
Scheduled Maintenance (Gasoline Engine) on
page 623for more information.
279

CHECK TIRE PRESSURE
If your vehicle has a Tire Pressure Monitor (TPM)
system, this message displays when the
pressure in one or more of the vehicle’s tires need
to be checked. This message also displays
LEFT FRONT, RIGHT FRONT, LEFT REAR, or
RIGHT REAR to indicate which tire needs to
be checked. You can receive more than one tire
pressure message at a time. To read the other
messages that may have been sent at the same
time, press the set/reset button or the trip
odometer reset stem. If a tire pressure message
appears on the DIC, stop as soon as you can.
Have the tire pressures checked and set to those
shown on the Tire Loading Information label.
SeeTires on page 550,Loading Your Vehicle on
page 425, andInation - Tire Pressure on
page 559. The DIC display also shows the tire
pressure values for the front and rear tires
by pressing the vehicle information button. See
“DIC Operation and Displays (With DIC Buttons)”
earlier in this section. If the tire pressure is
low, the low tire pressure warning light comes on.
SeeTire Pressure Light on page 259.
CHECK TRAILER WIRING
On vehicles with the Integrated Trailer Brake
Control (ITBC) system, this message may display
and a chime may sound when one of the
following conditions exists:
A trailer with electric brakes becomes
disconnected from the vehicle.
If the disconnect occurs while the vehicle
is stopped, this message clears itself
after a short time.
If the disconnect occurs while the vehicle
is moving, this message stays on until
the ignition is turned off.
There is a short in the wiring to the electric
trailer brakes.
When this message displays, power is no longer
available to the trailer brakes.
280

As soon as it is safe to do so, carefully pull your
vehicle over to the side of the road and turn
the ignition off. Check the wiring connection to the
trailer and turn the ignition back on. This
message clears if the trailer is reconnected. This
message also clears if you acknowledge it. If
this message still displays, either your vehicle or
the trailer needs service. See your dealer.
See “Integrated Trailer Brake Control System”
underTowing a Trailer on page 445for more
information.
DRIVER DOOR OPEN
This message displays and a chime sounds if the
driver’s door is not fully closed and the vehicle
is in a drive gear. Stop and turn off the vehicle,
check the door for obstructions, and close the door
again. Check to see if the message still appears
on the DIC.
ENGINE HOT A/C (Air Conditioning)
TURNED OFF
This message displays when the engine coolant
becomes hotter than the normal operating
temperature. SeeEngine Coolant Temperature
Gage on page 258. To avoid added strain on a hot
engine, the air conditioning compressor
automatically turns off. When the coolant
temperature returns to normal, the air conditioning
compressor turns back on. You can continue to
drive your vehicle.
If this message continues to appear, have the
system repaired by your dealer as soon as
possible to avoid damage to the engine.
ENGINE OIL LOW ADD OIL
If your vehicle has an oil level sensor, this
message displays if the oil level in the vehicle is
low. Check the oil level and correct it as
necessary. You may need to let the vehicle cool
or warm up and cycle the ignition to be sure
this message clears.
This message clears itself after 10 seconds, until
the next ignition cycle. SeeEngine Oil (Gasoline
Engine) on page 500for additional information.
281

SERVICE TRAILER BRAKE SYSTEM
On vehicles with the Integrated Trailer Brake
Control (ITBC) system, this message displays and
a chime sounds when there is a problem with
the ITBC system.
When this message displays, power is no longer
available to the trailer brakes.
As soon as it is safe to do so, carefully pull your
vehicle over to the side of the road and turn
the ignition off. Check the wiring connection to the
trailer and turn the ignition back on. If this
message still displays, either your vehicle or the
trailer needs service. See your dealer.
See “Integrated Trailer Brake Control System”
underTowing a Trailer on page 445for more
information.
STABILITRAK OFF
If your vehicle has StabiliTrak®, this message
displays when you turn off StabiliTrak®, or when
the stability control has been automatically
disabled. To limit wheel spin and realize the full
benets of the stability enhancement system, you
should normally leave StabiliTrak
®on. However,
you should turn StabiliTrak®off if your vehicle gets
stuck in sand, mud, ice, or snow and you wantto rock your vehicle to attempt to free it, or if you
are driving in extreme off-road conditions and
require more wheel spin. SeeIf Your Vehicle is
Stuck in Sand, Mud, Ice, or Snow on page 422.To
turn the StabiliTrak
®system on or off, see
StabiliTrak®System on page 381.
There are several conditions that can cause this
message to appear.
One condition is overheating, which could
occur if StabiliTrak®activates continuously
for an extended period of time.
The message also displays if the brake
system warning light is on. SeeBrake System
Warning Light on page 256.
The message could display if the stability
system takes longer than usual to complete its
diagnostic checks due to driving conditions.
The message displays if an engine or vehicle
related problem has been detected and the
vehicle needs service. See your dealer.
The message also displays if the vehicle is
shifted into 4LO.
The message turns off as soon as the conditions
that caused the message to be displayed are
no longer present.
287