Instrument Panel Overview...............................3-4
Hazard Warning Flashers................................3-6
Other Warning Devices...................................3-6
Horn .............................................................3-6
Tilt Wheel.....................................................3-7
Turn Signal/Multifunction Lever.........................3-7
Turn and Lane-Change Signals........................3-8
Headlamp High/Low-Beam Changer..................3-8
Windshield Wipers..........................................3-9
Windshield Washer.......................................3-10
Cruise Control..............................................3-10
Exterior Lamps.............................................3-14
Headlamps on Reminder................................3-15
Daytime Running Lamps (DRL).......................3-15
Marker Lamps..............................................3-16
Instrument Panel Brightness...........................3-16
Dome Lamps ...............................................3-16
Entry Lighting...............................................3-17
Reading Lamps............................................3-17
Instrument Panel Switchbank..........................3-18
Accessory Power Outlet(s).............................3-19
Ashtray(s) and Cigarette Lighter......................3-20Climate Controls............................................3-20
Climate Control System.................................3-20
Outlet Adjustment.........................................3-24
Rear Heating System....................................3-24
Warning Lights, Gages, and Indicators............3-25
Instrument Panel Cluster................................3-26
Speedometer and Odometer...........................3-27
Trip Odometer..............................................3-27
Tachometer.................................................3-27
Engine Speed Limiter....................................3-28
Safety Belt Reminder Light.............................3-28
Safety Belt Reminder Tone............................3-28
Airbag Readiness Light..................................3-29
Airbag Off Light............................................3-30
Charging System Light..................................3-31
Voltmeter Gage............................................3-32
Service Transmission Warning Light................3-32
Range Inhibit Warning Indicator......................3-33
Brake System Warning Light..........................3-33
Anti-Lock Brake System Warning Light.............3-35
Trailer Anti-Lock Brake System Warning Light . . .3-36
Engine Coolant Temperature Gage..................3-36
Section 3 Instrument Panel
3-1
Speedometer and Odometer
Your speedometer lets you see your speed in both
miles per hour (mph) and kilometers per hour (km/h).
Your odometer shows how far your vehicle has
been driven, in either miles (used in the United States)
or kilometers (used in Canada).
Trip Odometer
The trip odometer can tell you how far your vehicle has
been driven since you last set the trip odometer
to zero.
While the engine is running, press the reset button,
located to the right of the trip odometer, to toggle
between the trip odometer and the regular odometer.
Holding the reset button for two seconds while the
engine is running and the trip odometer is displayed, will
reset it.
To display the odometer reading with the ignition off,
press the reset button.
The hourmeter gage is accessed through the trip
odometer, for more information seeHourmeter Gage on
page 3-47.
Tachometer
This gage shows the safe operating range for the
engine speed in revolutions per minute (rpm).7.2L Caterpillar
®Diesel
Engine and 7.8L
DURAMAX
®Diesel
Engines
Gasoline and 6.6L
DURAMAX®Diesel
Engines
3-27
Air Pressure Gage
If your vehicle has air
brakes, the air pressure
gage is located above the
switchbank in the center
of the instrument panel.
This gage shows the air pressure for both your front
and rear brake systems.
If the needle on the gage indicates that the air pressure
is below 60 to 75 psi (415 to 517 kPa), the low air
warning light will come on. An alarm will also sound if
this happens.
The top pointer shows the pressure available for the
front system, while the bottom pointer shows pressure
for the rear. There should be no more than 4 psi
(28 kPa) difference showing between the systems.
Don’t drive until both pointers are showing at least
120 psi (827 kPa), so you’ll have enough air if you need
to apply your brakes.
Hourmeter Gage
To access the engine hourmeter gage, press the trip
odometer button three times.
The instrument panel cluster displays the accumulated
engine run time hours using the reconfigurable
odometer display. The engine run time hours displays
only when the ignition is in the LOCK or ACCESSORY
position and the trip reset button is pressed for about
four seconds. The value of the accumulated hours does
not change when the battery is disconnected.
The hourmeter resets to 0.0 when 10,000 hours are
accumulated. The instrument panel cluster begins
to reaccumulate the engine run time hours from
0.0 hours.
3-47
Wheel Replacement
Replace any wheel that is bent, cracked or badly rusted
or corroded. If wheel nuts keep coming loose, replace
the wheel. If the wheel leaks air, replace it.
Your dealer will know the kind of wheel you need.
Each new wheel should have the same load-carrying
capacity, diameter, width, offset and be mounted
the same way as the one it replaces.
If you need to replace any of your wheels, wheel bolts
or wheel nuts, replace them only with new GM original
equipment parts. This way, you will be sure to have the
right wheel, wheel bolts and wheel nuts for your vehicle.
{CAUTION:
A leaking wheel could fail without warning. A
wheel designed for tubeless tires could be
leaking because it is damaged. Do not use an
inner tube or some other thing to try to stop the
leaking. Get a new wheel or the proper type.
{CAUTION:
Without the correct wheel, you may not be able
to stop properly, and you could have other
problems like a tire air-out. You could have a
collision. If you do not go to your dealer to get
a new wheel, be sure you get the correct one.
Each new wheel should match the original
wheel in load-carrying capacity, in ation
pressure capacity, diameter, width, offset and
mounting con guration.
Using wheels and tires with higher load-carrying limits
than the original wheels and tires does not change
the Gross Axle Weight Rating (GAWR) or the Gross
Vehicle Weight Rating (GVWR) of your vehicle.
SeeLoading Your Vehicle on page 4-34for more
information.
Notice:The wrong wheel can cause trouble in
bearing life, brake cooling, speedometer/odometer
calibration, headlamp aim, bumper height, vehicle
ground clearance, stopping distance and tire
clearance to the body and chassis. You could also
have other problems like a tire air-out.
5-81
Part D: Maintenance Record
After the scheduled services are performed, record the date, odometer reading and who performed the service, and
any additional information from “Owner Checks and Services” on the following record pages. Also, you should
retain all maintenance receipts.
DateMiles/km Or
HoursServiced By Maintenance Record
6-35
Maintenance Schedule (cont.)
How This Section is Organized....................... 6-3
Introduction.................................................. 6-2
Maintenance Requirements............................. 6-2
Part A - Scheduled Maintenance Services......... 6-4
Part B - Owner Checks and Services.............6-28
PartC-Recommended Fluids and
Lubricants...............................................6-33
PartD-Maintenance Record........................6-35
Scheduled Maintenance................................. 6-5
Scheduled Maintenance Supplements............... 6-4
Using.......................................................... 6-4
Your Vehicle and the Environment................... 6-2
Malfunction Indicator Light................................3-38
Manual Transmission
Fluid..........................................................5-37
Operation...................................................2-31
Manual Windows.............................................. 2-9
Marker Lamps................................................3-16
Mirrors
Manual Rearview Mirror................................2-47
Outside Convex Mirrors................................2-48
Outside Heated Mirrors................................2-48
Outside Manual Mirrors................................2-47
Outside Power Mirrors..................................2-47N
New Vehicle Break-In......................................2-11
Noise Control System, Tampering......................5-67
Normal Maintenance Replacement Parts...........5-104
O
Odometer......................................................3-27
Odometer, Trip...............................................3-27
Off-Road Recovery..........................................4-15
Oil
Change Engine Oil Light...............................3-40
Engine...............................................5-24, 5-28
Low Oil Level Light......................................3-39
Pressure Gage............................................3-38
Oil, Engine Oil Life System..............5-31, 5-33, 5-34
Older Children, Restraints................................1-28
Other Service Items
Air Conditioning System...............................5-74
Automatic Ether Injection System...................5-72
Front Wheel Bearings with Oil-Filled Hubs.......5-73
Fuel Filter...................................................5-70
Primary Fuel Filter and Water Separator.........5-71
Secondary Fuel Filter and Water
Separator/Heater......................................5-71
9
Towing
Your Vehicle...............................................4-37
Traction
Control System (TCS)..................................4-12
Trailer
Connections................................................4-39
Trailer Brake Hand Control Valve......................4-10
Transmission
Fluid, Automatic...........................................5-36
Fluid, Manual..............................................5-37
Service Warning Light..................................3-32
Temperature Gage.......................................3-41
Transmission Operation, Automatic....................2-30
Transmission Operation, Manual........................2-31
Trip Odometer................................................3-27
Turn and Lane-Change Signals.......................... 3-8
Turn Signal/Multifunction Lever........................... 3-7
Two-Speed Rear Axle Electric Shift Control.........2-28
U
Understanding Radio Reception........................3-64
V
Vehicle
Control........................................................ 4-6
Damage Warnings........................................... iv
Loading......................................................4-34
Symbols......................................................... iv
Vehicle Data Collection and Event Data
Recorders.................................................... 7-6
Vehicle Identification
Number (VIN).............................................5-91
Service Parts Identification Label...................5-92
Service Statement.......................................5-92
Ventilation Adjustment......................................3-24
Visors...........................................................2-10
Voltmeter Gage..............................................3-32
13