
Black plate (44,1)GMC Sierra Owner Manual - 2011
5-44 Instruments and Controls
Engine Cooling System
Messages
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
Gauge on page 5‑17. 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 OVERHEATED IDLE
ENGINE
Notice: If you drive the 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.
See Engine Overheating on
page 10‑25 for more information.
This message displays when the
engine coolant temperature is too
hot. Stop and allow the vehicle to
idle until it cools down. See Engine
Coolant Temperature Gauge on
page 5‑17.
See Overheated Engine Protection
Operating Mode on page 10‑28 for
information on driving to a safe
place in an emergency.
ENGINE OVERHEATED STOP
ENGINE
Notice: If you drive the 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.
See Engine Overheating on
page 10‑25 for more information.
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.

Black plate (46,1)GMC Sierra Owner Manual - 2011
5-46 Instruments and Controls
Fuel System Messages
FUEL LEVEL LOW
This message displays and a
chime may sound if the fuel level
is low. Refuel as soon as possible.
SeeFuel Gauge on page 5‑15
and Fuel on page 9‑84 for more
information.
TIGHTEN GAS CAP
This message may display along
with the check engine light on
the instrument panel cluster if the
vehicle's fuel cap is not tightened
properly. See Malfunction Indicator
Lamp on page 5‑25. Reinstall
the fuel cap fully. See Filling the
Tank on page 9‑88. The diagnostic
system can determine if the fuel
cap has been left off or improperly
installed. A loose or missing fuel
cap allows fuel to evaporate into the
atmosphere. A few driving trips with
the cap properly installed should
turn this light and message off.
Key and Lock Messages
REPLACE BATTERY IN
REMOTE KEY
This message displays if a Remote
Keyless Entry (RKE) transmitter
battery is low. The battery needs
to be replaced in the transmitter.
See “Battery Replacement” under
Remote Keyless Entry (RKE)
System Operation on page 2‑3.
Lamp Messages
TURN SIGNAL ON
This message displays and a chime
sounds if a turn signal is left on for
1.2 km (0.75 mile). Move the turn
signal/multifunction lever to the off
position.
Object Detection System
Messages
PARK ASST BLOCKED SEE
OWNERS MANUAL
If the vehicle has the Ultrasonic
Rear Parking Assist (URPA) system,
this message displays if there is
something interfering with the park
assist system. See Ultrasonic
Parking Assist on page 9‑76 for
more information.
PARK ASSIST OFF
If the vehicle has the Ultrasonic
Rear Parking Assist (URPA) system,
after the vehicle has been started,
this message displays to remind the
driver that the URPA system has
been turned off. Press the set/reset
button or the trip odometer reset
stem to acknowledge this message
and clear it from the DIC display.
To turn the URPA system back on,
see Ultrasonic Parking Assist on
page 9‑76.

Black plate (50,1)GMC Sierra Owner Manual - 2011
5-50 Instruments and Controls
Transmission Messages
SERVICE 4 WHEEL DRIVE
If the vehicle has four-wheel
drive, this message may display
if a problem occurs with the
four-wheel-drive system. If this
message appears, stop as soon
as possible and turn off the vehicle.
Make sure the key is in the
LOCK/OFF position for at least
one minute and then restart the
vehicle and check for the message
on the DIC display. If the message
is still displayed or appears again
when you begin driving, the
four-wheel-drive system needs
service. See your dealer.
TRANSMISSION HOT IDLE
ENGINE
Notice:If you drive the vehicle
while the transmission fluid is
overheating and the transmission
temperature warning is displayed
on the instrument panel cluster
and/or DIC, you can damage the
transmission. This could lead to
costly repairs that would not be
covered by the warranty. Do not
drive the vehicle with overheated
transmission fluid or while the
transmission temperature
warning is displayed.
This message displays and a chime
may sound if the transmission fluid
in the vehicle gets hot. Driving with
the transmission fluid temperature
high can cause damage to the
vehicle. Stop the vehicle and let it
idle to allow the transmission to
cool. This message clears and
the chime stops when the fluid
temperature reaches a safe level.
Vehicle Reminder
Messages
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.

Black plate (65,1)GMC Sierra Owner Manual - 2011
Instruments and Controls 5-65
Example of Eight Dip Switcheswith Two Positions
Example of Eight Dip Switcheswith Three Positions
The panel of switches might not
appear exactly as they do in
the examples above, but they
should be similar. The switch positions on the
hand-held transmitter could be
labeled as follows:
.A switch in the up position
could be labeled as Up,
+, or On.
.A switch in the down
position could be labeled
as Down,
−, or Off.
.A switch in the middle
position could be labeled
as Middle, 0, or Neutral.
2. Write down the 8 to 12 switch settings from left to right as
follows:
.When a switch is in the up
position, write “Left.”
.When a switch is in the
down position, write “Right.”
.If a switch is set between
the up and down position,
write“Middle.”
The switch settings written
down in Step 2 now
become the button strokes
to be entered into the
Universal Home Remote in
Step 4. Be sure to enter the
switch settings written down
in Step 2, in order from left
to right, into the Universal
Home Remote, when
completing Step 4.
3. From inside your vehicle, first firmly press all three buttons
at the same time for about
three seconds. Release the
buttons to put the Universal
Home Remote into
programming mode.

Black plate (1,1)GMC Sierra Owner Manual - 2011
Lighting 6-1
Lighting
Exterior Lighting
Exterior Lamp Controls . . . . . . . . 6-1
Exterior Lamps OffReminder . . . . . . . . . . . . . . . . . . . . 6-3
Headlamp High/Low-Beam Changer . . . . . . . . . . . . . . . . . . . . . 6-3
Flash-to-Pass . . . . . . . . . . . . . . . . . 6-3
Daytime Running Lamps (DRL) . . . . . . . . . . . . . . . . 6-4
Automatic Headlamp System . . . . . . . . . . . . . . . . . . . . . . 6-4
Hazard Warning Flashers . . . . . 6-5
Turn and Lane-Change Signals . . . . . . . . . . . . . . . . . . . . . . 6-6
Fog Lamps . . . . . . . . . . . . . . . . . . . . 6-6
Auxiliary Roof-Mounted Lamp . . . . . . . . . 6-7
Interior Lighting
Instrument Panel IlluminationControl . . . . . . . . . . . . . . . . . . . . . . 6-7
Cargo Lamp . . . . . . . . . . . . . . . . . . 6-8
Dome Lamps . . . . . . . . . . . . . . . . . 6-8
Reading Lamps . . . . . . . . . . . . . . . 6-9
Lighting Features
Entry Lighting . . . . . . . . . . . . . . . . . 6-9
Exit Lighting . . . . . . . . . . . . . . . . . . . 6-9
Battery Load Management . . . . 6-9
Battery Power Protection . . . . 6-10
Exterior Lighting
Exterior Lamp Controls
The exterior lamps control is located
on the instrument panel to the left of
the steering wheel.
It controls the following systems:
.Headlamps
.Taillamps
.Parking Lamps
.License Plate Lamps
.Instrument Panel Lights
.Roof Marker Lamps
(If Equipped)

Black plate (2,1)GMC Sierra Owner Manual - 2011
6-2 Lighting
The exterior lamps control has four
positions:
O(Off):Turns off the automatic
headlamps and daytime running
lamps (DRL). Turn the headlamp
control to the off position again to
turn the automatic headlamps or
DRL back on.
For vehicles first sold in Canada,
the off position will only work when
the vehicle is shifted into P (Park).
AUTO (Automatic): Automatically
turns on the headlamps at normal
brightness, together with the
following:
.Parking Lamps
.Instrument Panel Lights
.Taillamps
.License Plate Lamps
.Roof Marker Lamps
(If Equipped) When the vehicle is turned off
and the headlamps are in AUTO,
the headlamps may automatically
remain on for a set time. The time of
the delay can be changed using the
DIC. See
Driver Information Center
(DIC) on page 5‑33.
;(Parking Lamps): Turns on
the parking lamps together with
the following:
.Instrument Panel Lights
.Taillamps
.License Plate Lamps
.Roof Marker Lamps
(If Equipped)
2(Headlamps): Turns on the
headlamps together with the
following:
.Parking Lamps
.Instrument Panel Lights
.Taillamps
.License Plate Lamps
.Roof Marker Lamps
(If Equipped)
When the headlamps are turned
on while the vehicle is on, the
headlamps turn off automatically
10 minutes after the ignition is
turned off. When the headlamps
are turned on while the vehicle
is off, the headlamps will stay
on for 10 minutes before
automatically turning off to prevent
the battery from being drained.

Black plate (3,1)GMC Sierra Owner Manual - 2011
Lighting 6-3
Turn the headlamp control to off
and then back to the headlamp on
position to make the headlamps
stay on for an additional 10 minutes.
Push the turn signal/multifunction
lever toward the instrument panel to
change the headlamps from low
beam to high beam.
Exterior Lamps Off
Reminder
For vehicles with a radio, a reminder
chime sounds when the headlamps
or parking lamps are manually
turned on, the ignition is off, and a
door is open. To disable the chime,
turn the lamp off.
Headlamp
High/Low-Beam
Changer
5 3
(Headlamp High/Low
Beam Changer): To change the
headlamps from low to high beam,
push the lever toward the instrument
panel. To return to low-beam
headlamps, pull the multifunction
lever toward you. Then release it.
When the high beams are on, this
indicator light on the instrument
panel cluster will also be on.
Flash-to-Pass
This feature lets you use the
high-beam headlamps to signal
a driver in front of you that you
want to pass. It works even if the
headlamps are in the automatic
position.
To use it, pull the turn signal lever
toward you, then release it.
If the headlamps are in the
automatic position or on low
beam, the high-beam headlamps
will turn on. They will stay on as
long as you hold the lever toward
you. The high-beam indicator on
the instrument panel cluster will
come on. Release the lever to
return to normal operation.

Black plate (4,1)GMC Sierra Owner Manual - 2011
6-4 Lighting
Daytime Running
Lamps (DRL)
Daytime Running Lamps (DRL) can
make it easier for others to see the
front of your vehicle during the day.
Fully functional daytime running
lamps are required on all vehicles
first sold in Canada.
The DRL system comes on when
the following conditions are met:
.The ignition is on.
.The exterior lamps control is
in AUTO.
.The transmission is not in Park.
.The light sensor determines it is
daytime.
When the DRL system is on,
only the DRL lamps are on.
The taillamps, sidemarker,
instrument panel lights, and
other lamps will not be on.
When it begins to get dark, the
automatic headlamp system
switches from DRL to the
headlamps. To turn off the DRL lamps, turn
the exterior lamps control to the
OFF position and then release.
For vehicles first sold in Canada,
the transmission must be in the
P (Park) position before the DRL
lamps can be turned off.
Automatic Headlamp
System
When it is dark enough outside, the
automatic headlamp system turns
on the headlamps at the normal
brightness, along with the taillamps,
sidemarker, parking lamps, and the
instrument panel lights. The radio
lights will also be dim.
To turn off the automatic headlamp
system, turn the exterior lamps
switch to the off position and then
release it. For vehicles first sold in
Canada, the transmission must be
in the P (Park) position before the
automatic headlamp system can
be turned off.
The vehicle has a light sensor
located on the top of the instrument
panel which regulates when the
automatic headlamps turn on.
Do not cover the sensor, otherwise
the headlamps will come on
whenever the ignition is on.
The system may also turn on the
headlamps when driving through a
parking garage or heavy overcast
weather. 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.