2012 GMC SIERRA 1500 oil pressure

Black plate (31,1)GMC Sierra Owner Manual - 2012 - CRC - 11/15/11
Instruments and Controls 5-31
DIC Buttons
The buttons are the trip/fuel, vehicle
information, customization, and set/
reset buttons. The button functions
are detailed in the following pages.
3(Trip/Fuel):Press this button
to display the odometer, trip
odometer, fuel range, average
economy, fuel used, timer,
transmission temperature, and
instantaneous economy and Active
Fuel Management™ indicator. The
compass and outside temperature
will also be shown in the display. The temperature will be shown
in °C or °F depending on the units
selected.
T(Vehicle Information):
Press
this button to display the oil life,
units, tire pressure readings for
vehicles with the Tire Pressure
Monitor System (TPMS), trailer
brake gain and output information
for vehicles with the Integrated
Trailer Brake Control (ITBC) system,
engine hours, compass zone
setting, and compass recalibration.
U(Customization): Press this
button to customize the feature
settings on the vehicle. See Vehicle
Personalization (With DIC Buttons)
on page 5‑48 for more information.
V(Set/Reset):Press this button to
set or reset certain functions and to
turn off or acknowledge messages
on the DIC.
Trip/Fuel Menu Items (with DIC
Buttons)
3(Trip/Fuel): Press this button
to scroll through the following menu
items:
Odometer
Press the trip/fuel button until
ODOMETER displays. This display
shows the distance the vehicle has
been driven in either kilometers (km)
or miles. Pressing the trip odometer
reset stem will also display the
odometer.
To switch between metric and
English measurements, see “Units”
later in this section.
Trip Odometer
Press the trip/fuel button until TRIP
displays. This display shows the
current distance traveled in either
kilometers (km) or miles since the
last reset for the trip odometer.
Pressing the trip odometer reset
stem will also display the trip
odometer.

Black plate (34,1)GMC Sierra Owner Manual - 2012 - CRC - 11/15/11
5-34 Instruments and Controls
Vehicle Information Menu
Items (with DIC Buttons)
T(Vehicle Information):Press
this button to scroll through the
following menu items:
Oil Life
Press the vehicle information
button 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 the 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 Engine Oil Messages on
page 5‑42. You should change the
oil as soon as you can. See Engine
Oil on page 10‑7. In addition to the
engine oil life system monitoring the
oil life, additional maintenance is recommended in the Maintenance
Schedule in this manual. See
Maintenance Schedule on
page 11‑3
for more information.
Remember, you must reset the OIL
LIFE display 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,
see Engine Oil Life System on
page 10‑10.
Units
Press the vehicle information button
until UNITS displays. This display
allows you to select between metric
or English units of measurement.
Once in this display, press the set/
reset button to select between
METRIC or ENGLISH units. All of
the vehicle information will then
be displayed in the unit of
measurement selected. Tire Pressure
If the vehicle has the Tire Pressure
Monitor System (TPMS), the
pressure for each tire can be viewed
in the DIC. The tire pressure will be
shown in either kilopascals (kPa) or
pounds per square inch (psi). Press
the vehicle information button
until the DIC displays FRONT
TIRES kPa (PSI) LEFT ##
RIGHT ##. Press the vehicle
information button again until the
DIC displays REAR TIRES kPa
(PSI) LEFT ## RIGHT ##.
If a low tire pressure condition is
detected by the system while
driving, a message advising you to
add pressure in a specific tire will
appear in the display. See
Tire
Pressure on page 10‑58 andTire
Messages on page 5‑45 for more
information.
If the tire pressure display shows
dashes instead of a value, there
may be a problem with the vehicle.
If this consistently occurs, see your
dealer for service.

Black plate (35,1)GMC Sierra Owner Manual - 2012 - CRC - 11/15/11
Instruments and Controls 5-35
Trailer Gain and Output
On vehicles with the Integrated
Trailer Brake Control (ITBC) system,
the trailer brake display appears
in the DIC. Press the vehicle
information button 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.
OUTPUT shows the power output to
the trailer any time a trailer with
electric brakes is connected. Output
is displayed in 0 to 10 bars. Dashes
may appear in the OUTPUT display.
To adjust trailer gain see“Integrated
Trailer Brake Control System” under
Towing Equipment on page 9‑94 for
more information.
Battery
This display shows the current
battery voltage. If the voltage is in
the normal range, the value will
display. For example, the display
may read BATTERY 13 VOLTS. Your vehicle's charging system
regulates voltage based on the state
of the battery. The battery voltage
may fluctuate when viewing this
information on the DIC. This is
normal.
Oil Pressure
This display shows the oil pressure
in either kilopascals (kPa) or pounds
per square inch (psi).
Engine Hours
Press the vehicle information button
until ENGINE HOURS displays. This
display shows the total number of
hours the engine has run.
Compass Zone Setting
This display allows for setting the
compass zone. See
Compass on
page 5‑5 for more information.
Compass Recalibration
This display allows for calibrating
the compass. See Compass on
page 5‑5 for more information. Blank Display
This display shows no information.
Trip Odometer Reset Stem
Menu Items (with DIC Buttons)
Use the trip odometer reset stem
to view the odometer and trip
odometer. The Language selection
and Engine Hours display can also
be accessed with the trip odometer
reset stem.
Odometer
Press the trip odometer reset stem
until ODOMETER displays. This
display shows the distance the
vehicle has been driven in either
kilometers (km) or miles (mi).
Trip Odometer
Press the trip odometer reset stem
until TRIP displays. This display
shows the current distance
traveled in either kilometers (km) or
miles (mi) since the last reset for the
trip odometer.

Black plate (38,1)GMC Sierra Owner Manual - 2012 - CRC - 11/15/11
5-38 Instruments and Controls
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.
OUTPUT shows the power output to
the trailer any time a trailer with
electric brakes is connected. Output
is displayed in 0 to 10 bars. Dashes
may appear in the OUTPUT display.
To adjust trailer gain see“Integrated
Trailer Brake Control System” under
Towing Equipment on page 9‑94 for
more information.
Speedometer
The speedometer shows how fast
the vehicle is moving in either
kilometers per hour (km/h) or miles
per hour (mph). The speedometer
cannot be reset. Battery
This display shows the current
battery voltage. If the voltage is in
the normal range, the value will
display. For example, the display
may read BATTERY 13 VOLTS.
Your vehicle's charging system
regulates voltage based on the state
of the battery. The battery voltage
may fluctuate when viewing this
information on the DIC. This is
normal.
Oil Pressure
This display shows the oil pressure
in either kilopascals (kPa) or pounds
per square inch (psi).
Compass Zone Setting
This display allows for setting the
compass zone. See
Compass on
page 5‑5 for more information.
Compass Recalibration
This display allows for calibrating
the compass. See Compass on
page 5‑5 for more information. Oil Life
To access this display, the vehicle
must be in P (Park). 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 the 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 Engine Oil Messages on
page 5‑42. You should change the
oil as soon as you can. See Engine
Oil on page 10‑7. In addition to the
engine oil life system monitoring the
oil life, additional maintenance is
recommended in the Maintenance
Schedule in this manual. See
Maintenance Schedule on
page 11‑3 for more information.

Black plate (42,1)GMC Sierra Owner Manual - 2012 - CRC - 11/15/11
5-42 Instruments and Controls
SeeOverheated Engine Protection
Operating Mode on page 10‑24 for
information on driving to a safe
place in an emergency.
ENGINE OVERHEATED STOP
ENGINE
This message displays and a
chime may sound if the engine
cooling system reaches unsafe
temperatures for operation. Stop
and turn off the vehicle as soon as
it is safe to do so to avoid severe
damage. This message clears when
the engine has cooled to a safe
operating temperature.
Engine Oil Messages
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. See Engine
Oil Life System on page 10‑10 for
information on how to reset the
message. See Engine Oil on page 10‑7
andMaintenance
Schedule on page 11‑3 for more
information.
ENGINE OIL HOT IDLE
ENGINE
This message displays when the
engine oil becomes hotter than the
normal operating temperature. Stop
and allow the vehicle to idle until it
cools down. See Engine Coolant
Temperature Gauge on page 5‑16.
OIL PRESSURE LOW STOP
ENGINE
Notice: If you drive the vehicle
while the engine oil pressure is
low, severe engine damage may
occur. If a low oil pressure
warning appears on the Driver
Information Center (DIC), stop the
vehicle as soon as possible. Do
not drive the vehicle until the
cause of the low oil pressure is
corrected. See Engine Oil on
page 10‑7 for more information. This message displays if low oil
pressure levels occur. Stop the
vehicle as soon as safely possible
and do not operate it until the cause
of the low oil pressure has been
corrected. Check the oil as soon
as possible and have the vehicle
serviced by your dealer. See
Engine
Oil on page 10‑7.
Engine Power Messages
ENGINE POWER IS REDUCED
This message displays and a chime
may sound when the cooling system
temperature gets too hot and the
engine further enters the engine
coolant protection mode. See
Engine Overheating on page 10‑22
for more information.
This message also displays when
the vehicle's engine power is
reduced. Reduced engine power
can affect the vehicle's ability to
accelerate. If this message is
on, but there is no reduction in
performance, proceed to your
destination. The performance may

Black plate (7,1)GMC Sierra Owner Manual - 2012 - CRC - 11/15/11
Vehicle Care 10-7
A.Engine Air Cleaner/Filter on
page 10‑17.
B. Coolant Surge Tank and Pressure Cap. See Cooling
System on page 10‑18.
C. Positive (+) Terminal. See Jump
Starting on page 10‑88.
D. Battery on page 10‑30.
E. Remote Negative (−) Terminal (Out of View). See Jump
Starting on page 10‑88.
F. Automatic Transmission Dipstick (Out of View). See
“Checking the Fluid Level”
under Automatic Transmission
Fluid (4-Speed Transmission)
on page 10‑11 orAutomatic
Transmission Fluid (6-Speed
Transmission) on page 10‑14.
G. Engine Oil Fill Cap. See “When
to Add Engine Oil” under
Engine Oil on page 10‑7. H. Engine Oil Dipstick (Out of
View). See “Checking Engine
Oil” under Engine Oil on
page 10‑7.
I. Engine Cooling Fan (Out of View). See Cooling System on
page 10‑18.
J. Power Steering Fluid Reservoir. See Power Steering Fluid on
page 10‑25.
K. Brake Master Cylinder Reservoir. See Brake Fluid on
page 10‑28.
L. Engine Compartment Fuse
Block on page 10‑44.
M. Windshield Washer Fluid Reservoir. See “Adding Washer
Fluid” under Washer Fluid on
page 10‑26.
If the vehicle has a diesel engine
and/or an Allison Transmission, see
the Duramax Diesel Supplement.Engine Oil
For diesel engine vehicles, see
“Engine Oil” in the Duramax Diesel
Supplement.
To ensure proper engine
performance and long life, careful
attention must be paid to engine
oil. Following these simple, but
important steps will help protect
your investment:
.Always use engine oil approved
to the proper specification and of
the proper viscosity grade. See
“Selecting the Right Engine Oil”
in this section.
.Check the engine oil level
regularly and maintain the
proper oil level. See “Checking
Engine Oil” and“When to Add
Engine Oil” in this section.
.Change the engine oil at the
appropriate time. See Engine Oil
Life System on page 10‑10.
.Always dispose of engine oil
properly. See “What to Do with
Used Oil” in this section.

Black plate (56,1)GMC Sierra Owner Manual - 2012 - CRC - 11/15/11
10-56 Vehicle Care
Belt:A rubber coated layer of
cords that is located between
the plies and the tread. Cords
may be made from steel or other
reinforcing materials.
Bead
:The tire bead contains
steel wires wrapped by steel
cords that hold the tire onto
the rim.
Bias Ply Tire
:A pneumatic tire
in which the plies are laid at
alternate angles less than
90 degrees to the centerline of
the tread.
Cold Tire Pressure
:The
amount of air pressure in a tire,
measured in kPa (kilopascal)
or psi (pounds per square inch)
before a tire has built up heat
from driving. See Tire Pressure
on page 10‑58. Curb Weight
:The weight of a
motor vehicle with standard and
optional equipment including the
maximum capacity of fuel,
oil, and coolant, but without
passengers and cargo.
DOT Markings
:A code molded
into the sidewall of a tire
signifying that the tire is in
compliance with the U.S.
Department of Transportation
(DOT) Motor Vehicle Safety
Standards. The DOT code
includes the Tire Identification
Number (TIN), an alphanumeric
designator which can also
identify the tire manufacturer,
production plant, brand, and
date of production.
GVWR
:Gross Vehicle Weight
Rating. See Vehicle Load Limits
on page 9‑16. GAWR FRT
:Gross Axle
Weight Rating for the front axle.
See Vehicle Load Limits on
page 9‑16.
GAWR RR
:Gross Axle Weight
Rating for the rear axle. See
Vehicle Load Limits on
page 9‑16.
Intended Outboard Sidewall
:
The side of an asymmetrical tire,
that must always face outward
when mounted on a vehicle.
Kilopascal (kPa)
:The metric
unit for air pressure.
Light Truck (LT‐Metric) Tire
:A
tire used on light duty trucks and
some multipurpose passenger
vehicles.
Load Index
:An assigned
number ranging from 1 to 279
that corresponds to the load
carrying capacity of a tire.

Black plate (98,1)GMC Sierra Owner Manual - 2012 - CRC - 11/15/11
10-98 Vehicle Care
6. Use an adequate clampingdevice designed for towing to
ensure that the front wheels are
locked into the straight position.
{WARNING
Shifting a four-wheel-drive
vehicle's transfer case into
N (Neutral) can cause the vehicle
to roll even if the transmission is
in P (Park). The driver or others
could be injured. Make sure the
parking brake is firmly set before
the transfer case is shifted to
N (Neutral).
7. Shift the transfer case to N (Neutral). See “Shifting into
Neutral” underFour-Wheel Drive
on page 9‑40 for the proper
procedure to select the neutral
position for the vehicle.
8. Turn the ignition to LOCK/OFF.
After towing, see “Shifting Out of
Neutral” underFour-Wheel Drive on
page 9‑40.
Appearance Care
Exterior Care
Washing the Vehicle
To preserve the vehicle's finish,
wash it often and out of direct
sunlight.
Notice: Do not use petroleum
based, acidic, or abrasive
cleaning agents as they can
damage the vehicle's paint,
metal, or plastic parts. If damage
occurs, it would not be covered
by the vehicle's warranty.
Approved cleaning products
can be obtained from your
dealer. Follow all manufacturer
directions regarding correct
product usage, necessary safety
precautions, and appropriate
disposal of any vehicle care
product.
Notice: Avoid using high
pressure washes closer than
30 cm (12 in) to the surface of the
vehicle. Use of power washers exceeding 8,274 kPa (1,200 psi)
can result in damage or removal
of paint and decals.
Rinse the vehicle well, before
washing and after, to remove all
cleaning agents completely. If they
are allowed to dry on the surface,
they could stain.
Dry the finish with a soft, clean
chamois or an all-cotton towel to
avoid surface scratches and water
spotting.
Finish Care
Application of aftermarket clearcoat
sealant/wax materials is not
recommended. If painted surfaces
are damaged, see your dealer to
have the damage assessed and
repaired. Foreign materials such
as calcium chloride and other salts,
ice melting agents, road oil and tar,
tree sap, bird droppings, chemicals
from industrial chimneys, etc., can
damage the vehicle's finish if they
remain on painted surfaces. Wash
the vehicle as soon as possible.
If necessary, use non-abrasive