2007 GMC SIERRA CLASSIC warning

Transmission Temperature Gage
Your vehicle may have a transmission
temperature gage.
When your ignition is on, the gage shows the
temperature of the transmission uid. The normal
operating range is from 100°F (38°C) to about
265°F (130°C).At approximately 265°F (130°C), the Driver
Information Center (DIC) will display a
TRANSMISSION HOT message and the
transmission will enter a transmission protection
mode. When the transmission enters the protection
mode, you may notice a change in the
transmission shifting patterns. The transmission
will return to normal shifting patterns when
the transmission uid temperature falls below
260°F (125°C).
SeeDriver Information Center (DIC) on page 265
for further information.
If your vehicle has an Allison
®transmission, and
the uid reaches temperatures of approximately
275°F (135°C) or greater, the DIC will display
a TRANS HOT IDLE ENGINE warning message
and a chime will sound until the temperature
falls below 265°F (130°C). Pull the vehicle off the
roadway when it is safe to do so. Set the
parking brake, place the transmission in PARK (P)
and allow the engine to idle until the transmission
temperature falls below 265°F (130°C).United StatesCanada
257

Oil Pressure Gage
The oil pressure gage shows the engine oil
pressure in psi (pounds per square inch) when the
engine is running. Canadian vehicles indicate
pressure in kPa (kilopascals).
Oil pressure may vary with engine speed, outside
temperature and oil viscosity, but readings
above the low pressure zone indicate the normal
operating range.A reading in the low pressure zone may be
caused by a dangerously low oil level or some
other problem causing low oil pressure. Check
your oil as soon as possible. See “OIL PRESSURE
LOW” underDIC Warnings and Messages on
page 270andEngine Oil (Gasoline Engine)
on page 486.
{CAUTION:
Do not keep driving if the oil pressure is
low. If you do, your engine can become so
hot that it catches re. You or others
could be burned. Check your oil as soon
as possible and have your vehicle
serviced.
Notice:Lack of proper engine oil maintenance
may damage the engine. The repairs would
not be covered by your warranty. Always follow
the maintenance schedule in this manual for
changing engine oil.United StatesCanada
262

Tow/Haul Mode Light
This light comes on
when the Tow/Haul
mode has been
activated.
For more information, seeTow/Haul Mode on
page 147.
Cargo Lamp Light
This light comes on
when the cargo lamp is
in use. For more
information seeCargo
Lamp on page 228.
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 270for more information.
United StatesCanada
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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.
Low Fuel Warning Light
The light next to the fuel gage will come on briey
when you are starting the engine.
This light comes on when the fuel tank is low on
fuel. To turn it off, add fuel to the fuel tank.
SeeFuel on page 470.
Driver Information Center (DIC)
The Driver Information Center (DIC) display is
located on the instrument panel cluster, below the
speedometer. If your vehicle has DIC buttons,
they are located on the steering wheel. The DIC
can display information such as the trip odometer,
fuel economy, customization features, and
warning/status messages.
If your vehicle does not have DIC steering wheel
buttons, you will not have all of the features
listed. Scroll through the odometer, trip odometer,
engine hours, and selected range if your vehicle
has an Allison Transmission
®by pressing the
trip odometer reset stem located on the instrument
panel cluster. Turn off, or acknowledge, DIC
messages by pressing the trip odometer reset
stem. SeeSpeedometer and Odometer on
page 246for information on features for vehicles
without DIC buttons.
265

DIC Warnings and Messages
Warning messages are displayed on the Driver
Information Center (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. If there is more than one
message that needs to be displayed, they
will appear one after another. Some messages
may not require immediate action, but you should
press any of the four DIC buttons on the
steering wheel to acknowledge that you received
the messages and to clear them from the
display. If your vehicle does not have DIC buttons
on the steering wheel, press the trip odometer
reset stem, located on the instrument panel
cluster, to acknowledge messages and clear them
from the display.Some messages cannot be cleared from the
display because they are more urgent. These
messages require action before they can be
removed from the DIC display. 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.
BATTERY NOT CHARGING
On some vehicles, if the battery is not charging
during operation, this message will appear on the
DIC. Driving with this problem could drain the
battery. Have the electrical system checked
by your dealer as soon as possible. Pressing any
of the four DIC buttons will acknowledge the
message and clear it from the DIC display. If your
vehicle does not have the four DIC buttons,
pressing the trip odometer reset stem will
acknowledge the message and clear it from the
DIC display. SeeBattery Warning Light on
page 253andVoltmeter Gage on page 253.
270

CHANGE ENGINE OIL
This message is displayed when the engine oil
needs to be changed.
When you change the engine oil, be sure to reset
the CHANGE ENGINE OIL message. See
Engine Oil Life System (Gasoline Engine) on
page 489,Engine Oil (Gasoline Engine) on
page 486, andScheduled Maintenance (Gasoline
Engine) on page 617for more information.
CHARGING SYSTEM FAILURE
On some vehicles, if there is a problem with the
generator and battery charging system, this
message will appear on the DIC, a chime will
sound, and the battery warning light on the
instrument panel cluster will come on. Driving with
this problem could drain the battery. Turn off all
unnecessary accessories. Stop and turn off
the vehicle as soon as it is safe to do so. Have
the electrical system checked by your dealer
immediately. SeeBattery Warning Light on
page 253andVoltmeter Gage on page 253for
more information.
CHECK OIL LEVEL
If your vehicle has an oil level sensor, and the oil
level in the vehicle is low, this message will
appear on the DIC. 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 will clear. Once the problem is
corrected, pressing any of the four DIC buttons
will acknowledge the message and clear it from the
DIC display. If your vehicle does not have the
four DIC buttons, pressing the trip odometer reset
stem will acknowledge the message and clear
it from the DIC display. SeeEngine Oil (Gasoline
Engine) on page 486for additional information.
CHECK WASHER FLUID
If the washer uid level is low, this message will
appear on the DIC. SeeWindshield Washer
Fluid on page 516. Adding washer uid to the
windshield washer reservoir will clear the
message. Pressing any of the four DIC buttons
will acknowledge the message and clear it from the
DIC display. If your vehicle does not have the
four DIC buttons, pressing the trip odometer reset
stem will acknowledge the message and clear
it from the DIC display.
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DRIVER DOOR AJAR
If the driver’s door is not fully closed, this message
will appear on the display and you will hear a
chime. 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. Pressing any of the four DIC buttons will
acknowledge the message and clear it from the
DIC display. If your vehicle does not have the four
DIC buttons, pressing the trip odometer reset
stem will acknowledge the message and clear it
from the DIC display.
ENGINE COOLANT HOT
If the cooling system temperature gets hot, this
message will appear in the DIC. Turn off the
air conditioning. If the message is still on, or if the
engine coolant temperature gage continues to
rise, pull the vehicle over when it is safe to do so.
SeeEngine Coolant Temperature Gage on
page 256for more information. Stop the vehicle
and let the engine idle in PARK (P) for a few
minutes, or NEUTRAL with the parking brake set
for manual transmissions, to allow the coolant
to reach a safe temperature. This message
will clear when the coolant temperature drops to
safe operating temperature.
ENGINE OVERHEATED
Notice:If you drive your vehicle while the
engine is overheating, severe engine damage
may occur. If an overheat warning appears
on the instrument panel cluster and/or
DIC, stop the vehicle as soon as possible.
Do not increase the engine speed above
normal idling speed. SeeEngine Overheating
on page 505for more information.
If the engine cooling system reaches unsafe
temperatures for operation, this message
will appear in the DIC and you will hear a chime.
Stop and turn off the vehicle as soon as it is
safe to do so to avoid severe damage. This
message will clear when the engine has cooled to
a safe operating temperature.
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FUEL LEVEL LOW
If the fuel level is low, this message will appear on
the DIC and you will hear a chime. Refuel as
soon as possible. Pressing any of the four DIC
buttons will acknowledge the message and clear it
from the DIC display. If your vehicle does not
have the four DIC buttons, pressing the trip
odometer reset stem will acknowledge the
message and clear it from the DIC display. See
Low Fuel Warning Light on page 265,Fuel
Gage on page 264, andFuel on page 470.
KEYFOB X BATTERY LOW
If a Remote Keyless Entry (RKE) transmitter
battery is low, this message will appear on the
DIC. The battery needs to be replaced in the
transmitter. See “Battery Replacement” under
Remote Keyless Entry System Operation on
page 117. Pressing any of the four DIC buttons
will acknowledge the message and clear it from the
DIC display. If your vehicle does not have the
four DIC buttons, pressing the trip odometer reset
stem will acknowledge the message and clear
it from the DIC display.
LEFT REAR DOOR AJAR (Crew Cab)
If the driver’s side rear door is not fully closed, this
message will appear on the display and you will
hear a chime. 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. Pressing any of the four DIC
buttons will acknowledge the message and clear it
from the DIC display. If your vehicle does not
have the four DIC buttons, pressing the trip
odometer reset stem will acknowledge the
message and clear it from the DIC display.
LOW COOLANT LEVEL
Notice:Engine damage from running your
engine without coolant is not covered by your
warranty. See “Overheated Engine Protection
Operating Mode” in the Index for information
on driving to a safe place in an emergency.
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