A.Outlet Adjustment on page 4-17.
B.Driver Information Center (DIC) on page 4-36.
C.Turn Signal/Multifunction Lever on page 4-4.
D.Hazard Warning Flashers on page 4-3.
E.Instrument Panel Cluster on page 4-21.
F. Shift Lever. SeeStarting the Engine on page 3-23.
G.Climate Control System on page 4-15.
H.Audio System(s) on page 4-59.
I.Exterior Lamps on page 4-9.
J.Instrument Panel Brightness on page 4-11.
K.Cruise Control on page 4-6. Fast Idle System
(If Equipped). See Duramax Diesel Manual for more
information.L.Tilt Wheel on page 4-3.
M.Horn on page 4-3.
N.Audio Steering Wheel Controls on page 4-77.
O. Tow/Haul Mode Button. See “Tow/Haul Mode” under
Towing a Trailer on page 5-30.
P.Accessory Power Outlet(s) on page 4-14.
Q.StabiliTrak
®System on page 5-5(If Equipped).
R.Airbag Off Switch on page 2-70.
S.Storage Areas on page 3-44.
T.Passenger Airbag Status Indicator on page 4-25.
U.Rear Heating System on page 4-18(If Equipped).
1-3
Tire Pressure Monitor
This vehicle may have a Tire Pressure Monitor
System (TPMS).
The Tire Pressure Monitor
alerts you when a
significant reduction in
pressure occurs in one or
more of the vehicle’s tires
by illuminating the low tire
pressure warning light on
the instrument cluster.
The warning light will remain on until the tire pressure is
corrected. The proper tire pressures for your vehicle
are listed on the Tire and Loading Information label
located on the driver side center pillar (B pillar). See
Loading the Vehicle on page 5-19.
You may notice during cooler conditions that the low tire
pressure warning light will appear when the vehicle is
first started and then turn off as you drive. This may be
an early indicator that your tire pressures are getting
low and the tires need to be inflated to the proper
pressure.Note:The Tire Pressure Monitor can alert you about
low tire pressure, but it does not replace normal monthly
tire maintenance. It is the driver’s responsibility to
maintain correct tire pressures.
SeeTire Pressure Monitor System on page 6-70and
Tire Pressure Monitor Operation on page 6-72.
Engine Oil Life System
The engine oil life system calculates engine oil life
based on vehicle use and displays a DIC message when
it is necessary to change the engine oil and filter. The
oil life system should be reset to 100% only following an
oil change.
Resetting the Oil Life System
1. Turn the ignition to ON/RUN, with the engine off.
2. Fully press and release the accelerator pedal
three times within five seconds.
3. Turn the key to LOCK/OFF.
SeeEngine Oil Life System on page 6-18.
1-17
The passenger sensing system is designed to turn off
the right front passenger frontal airbag if:
•The right front passenger seat is unoccupied.
•The system determines that an infant is present in
a rear-facing infant seat.
•The system determines that a small child is present
in a child restraint.
•The system determines that a small child is present
in a booster seat.
•A right front passenger takes his/her weight off of
the seat for a period of time.
•The right front passenger seat is occupied by a
smaller person, such as a child who has outgrown
child restraints.
•Or, if there is a critical problem with the airbag
system or the passenger sensing system.
When the passenger sensing system has turned off the
right front passenger frontal airbag, the off indicator
will light and stay lit to remind you that the airbag is off.
SeePassenger Airbag Status Indicator on page 4-25.
The passenger sensing system is designed to turn
on (may inflate) the right front passenger frontal airbag
anytime the system senses that a person of adult
size is sitting properly in the right front passenger seat.When the passenger sensing system has allowed the
airbag to be enabled, the on indicator will light and stay
lit to remind you that the airbag is active.
For some children, including those in child restraints,
and for very small adults, the passenger sensing system
may or may not turn off the right front passenger
frontal airbag, depending upon the person’s seating
posture and body build. Everyone in your vehicle who
has outgrown child restraints should wear a safety
belt properly — whether or not there is an airbag for that
person.
{WARNING:
If the airbag readiness light in the instrument panel
cluster ever comes on and stays on, it means that
something may be wrong with the airbag system.
If this ever happens, have the vehicle serviced
promptly, because an adult-size person sitting in
the right front passenger’s seat may not have the
protection of the airbag(s). SeeAirbag Readiness
Light on page 4-23for more on this, including
important safety information.
2-75
B (ACC/ACCESSORY):This is the position in which
you can operate things like the radio and the windshield
wipers when the engine is off.
C (ON/RUN):This position can be used to operate the
electrical accessories and to display some instrument
panel cluster warning and indicator lights. The
switch stays in this position when the engine is running.
If you leave the key in the ACC/ACCESSORY or
ON/RUN position with the engine off, the battery could
be drained. You may not be able to start the vehicle
if the battery is allowed to drain for an extended period
of time.
D (START):This is the position that starts the engine.
When the engine starts, release the key. The ignition
switch returns to ON/RUN for driving.
A warning tone will sound when the driver door is
opened, the ignition is in ACC/ACCESSORY or
LOCK/OFF and the key is in the ignition.Retained Accessory Power (RAP)
These vehicle accessories can be used for up to
10 minutes after the engine is turned off:
•Audio System
•Power Windows (if equipped)
These features will work when the ignition key is in
ON/RUN or ACC/ACCESSORY. Once the key is turned
from ON/RUN to LOCK/OFF, power to the radio will
continue to work 10 minutes or until the driver door is
opened. The power windows will continue to work for up
to 10 minutes or until any door is opened.
Starting the Engine
If the vehicle has the DURAMAX®Diesel engine, see
the DURAMAX®Diesel manual for more information.
To place the transmission in the proper gear:
Move the shift lever to P (Park) or N (Neutral). The
engine will not start in any other position. To restart the
engine when the vehicle is already moving, use
N (Neutral) only.
3-23
Automatic Transmission Operation
(Six Speed Automatic Transmission)
Vehicles with a six speed automatic transmission
have a shift position indicator within the instrument panel
cluster.
There are several different positions for the shift lever.
See “Range Selection Mode” later in this section.
P (Park):This position locks the rear wheels. It is the
best position to use when starting the engine because
the vehicle cannot move easily. When parked on a
hill, especially when the vehicle has a heavy load, you
might notice an increase in the effort to shift out of
P (Park). See Torque Lock (Automatic Transmission)
underShifting Into Park on page 3-37for more
information.
{WARNING:
It is dangerous to get out of the vehicle if the shift
lever is not fully in P (Park) with the parking brake
firmly set. The vehicle can roll.
Do not leave the vehicle when the engine is
running unless you have to. If you have left the
engine running, the vehicle can move suddenly.
You or others could be injured. To be sure the
vehicle will not move, even when you are on fairly
level ground, always set the parking brake and
move the shift lever to P (Park). SeeShifting Into
Park on page 3-37. If you are pulling a trailer, see
Towing a Trailer on page 5-30.
R (Reverse):Use this gear to back up.
Notice:Shifting to R (Reverse) while the vehicle is
moving forward could damage the transmission. The
repairs would not be covered by the vehicle warranty.
Shift to R (Reverse) only after the vehicle is stopped.
To rock the vehicle back and forth to get out of snow, ice,
or sand without damaging the transmission, seeIf Your
Vehicle is Stuck in Sand, Mud, Ice, or Snow on
page 5-18.
3-27
Turn the tow/haul mode on and off by pressing the
button, located to the right of the steering wheel on the
instrument panel. When tow/haul is on, a light on
the instrument panel cluster will come on.
SeeTow/Haul Mode Light on page 4-35for more
information.
Also see “Tow Haul Mode” underTowing a Trailer on
page 5-30for more information.
Grade Braking (Six Speed Automatic
Transmission)
The Grade Braking shift modes can be activated by
pressing the tow/haul button on the dash. While
in Range Selection Mode, Grade Braking is deactivated
allowing the driver to select a desired range of gears.
Grade Braking is only active while the Tow/Haul Mode is
selected and you are not in the Range Selection
Mode. See “Tow/Haul Mode listed previously and
Automatic Transmission Operation (Six Speed Automatic
Transmission) on page 3-27orAutomatic Transmission
Operation (Four Speed Automatic Transmission) on
page 3-32for more information on the Range Selection
Mode. Grade Braking assists in maintaining desired
vehicle speeds when driving on downhill grades
by automatically shifting to lower gears when the driver
desires to slow the vehicle by applying the brake.
This reduces wear on the braking system and increases
control of the vehicle.
Also seeTowing a Trailer on page 5-30for more
information.
3-35
Instrument Panel Overview...............................4-3
Hazard Warning Flashers................................4-3
Horn .............................................................4-3
Tilt Wheel.....................................................4-3
Turn Signal/Multifunction Lever.........................4-4
Turn and Lane-Change Signals........................4-4
Headlamp High/Low-Beam Changer..................4-5
Flash-to-Pass.................................................4-5
Windshield Wipers..........................................4-5
Windshield Washer.........................................4-6
Cruise Control................................................4-6
Exterior Lamps...............................................4-9
Headlamps on Reminder................................4-10
Daytime Running Lamps (DRL).......................4-10
Automatic Headlamp System..........................4-11
Instrument Panel Brightness...........................4-11
Dome Lamps ...............................................4-12
Dome Lamp Override....................................4-12
Entry/Exit Lighting.........................................4-13
Reading Lamps............................................4-13
Electric Power Management...........................4-13
Battery Run-Down Protection..........................4-14
Accessory Power Outlet(s).............................4-14
Ashtray(s) and Cigarette Lighter......................4-15Climate Controls............................................4-15
Climate Control System.................................4-15
Outlet Adjustment.........................................4-17
Rear Heating System....................................4-18
Rear Air Conditioning and Heating System.......4-18
Warning Lights, Gages, and Indicators............4-20
Instrument Panel Cluster................................4-21
Speedometer and Odometer...........................4-22
Trip Odometer..............................................4-22
Safety Belt Reminders...................................4-22
Airbag Readiness Light
..................................4-23
Airbag Off Light............................................4-24
Passenger Airbag Status Indicator...................4-25
Charging System Light..................................4-26
Voltmeter Gage............................................4-27
Brake System Warning Light..........................4-27
Antilock Brake System (ABS) Warning Light.....4-28
StabiliTrak
®Indicator Light.............................4-29
Engine Coolant Temperature Gage..................4-29
Tire Pressure Light.......................................4-30
Malfunction Indicator Lamp.............................4-30
Oil Pressure Gage........................................4-33
Oil Pressure Light.........................................4-34
Section 4 Instrument Panel
4-1
Turn Signal/Multifunction Lever
The lever on the left side of the steering column
includes the following:
G:Turn and Lane Change Signals.
53:Headlamp High/Low-Beam Changer.
N:Windshield Wipers.
L:Windshield Washer.
Flash-to-Pass Feature.
Information for these features is on the pages following.
Turn and Lane-Change Signals
G:An arrow on the instrument panel cluster flashes
in the direction of the turn or lane change.
To signal a turn, move the lever all the way up or down.
To signal a lane change, raise or lower the lever until
the arrow starts to flash. The turn signal automatically
flashes three times and if the tow-haul mode is active it
flashes six times. Holding the turn signal lever for
more than one second causes the turn signals to flash
continually until the lever is released.
The lever returns to its starting position when released.
If after signaling a turn or lane change the arrow
flashes rapidly or does not come on, a signal bulb may
be burned out.
Have the bulbs replaced. If the bulb is not burned out,
check the fuse. SeeFuses and Circuit Breakers on
page 6-110.
Turn Signal On Chime
If the turn signal is left on for more than1.2 km (3/4 mi),
a chime sounds at each flash of the turn signal and
the message TURN SIGNAL ON also appears in
the Driver Information Center (DIC). SeeDIC Warnings
and Messages on page 4-44. To turn off the chime
and message, move the turn signal lever to the
off position.
4-4