Your vehicle has one
double-sided key for the
ignition and all door locks.
If you ever lose your key, your dealer will be able to
assist you with obtaining a new one.
Notice:If you ever lock your keys in your vehicle,
you may have to damage the vehicle to get in.
Be sure you have spare keys.
If you ever do get locked out of your vehicle, call GM
Roadside Assistance Center. SeeRoadside Assistance
Program on page 7-5.Remote Keyless Entry System
If the vehicle has the keyless entry system, it operates
on a radio frequency subject to Federal Communications
Commission (FCC) Rules and with Industry Canada.
This device complies with Part 15 of the FCC Rules.
Operation is subject to the following two conditions:
1. This device may not cause interference.
2. This device must accept any interference received,
including interference that may cause undesired
operation of the device.
This device complies with RSS-210 of Industry Canada.
Operation is subject to the following two conditions:
1. This device may not cause interference.
2. This device must accept any interference received,
including interference that may cause undesired
operation of the device.
Changes or modifications to this system by other than
an authorized service facility could void authorization to
use this equipment.
2-3
Ignition Positions
With your key in the ignition switch, you can turn it to
five different positions.
A (ACCESSORY):This position allows you to use
things like the radio, power windows and the windshield
wipers when the engine is off. To get into ACCESSORY,
push in the key and turn it toward you. Your steering
wheel will remain locked, just as it was before you
inserted the key.B (LOCK):This position locks your ignition, steering
wheel and transmission. It is a theft-deterrent feature.
You will only be able to remove your key when the
ignition is turned to LOCK.
C (OFF):This position lets you turn off the engine but
still turn the steering wheel. It does not lock the
steering wheel like LOCK. Use OFF if you must have
your vehicle in motion while the engine is off.
D (RUN):This is the position for driving.
E (START):This position starts your engine.
Engine Starter Over-Crank
Protection
Your vehicle may have an engine starter over-crank
protection system. If the starter motor overheats
and shuts off due to over-cranking, the motor must cool
down before it will reset and allow starter operation.
It can take up to six minutes before the starter will
work again.
2-12
For all engines this feature is already turned on. The
automatic quick warm-up on the DURAMAX®engine
can be turned off and on by doing the following
procedure:
1. Turn the ignition to RUN, with the vehicle off.
2. Press the accelerator pedal to the floor and hold it
while quickly pressing and fully releasing the brake
pedal three times in less than eight seconds.
3. Release the accelerator pedal and start the engine.
The green exhaust brake/restrictor light below the
radio controls will be lit for 10 seconds.
If this feature is turned off, by doing the procedure
described previously, and then the engine is
started, the exhaust brake/restrictor light will flash
for 10 seconds and then it will turn off.
When the engine is started, it will slowly increase to the
high idle speed after a delay of a few seconds; up to
about two minutes. For this method to work properly
there must be no throttle or brake pedal faults, and the
throttle pedal must not fall below 75 percent of wide
open throttle while pressing the brake pedal.The engine idle speed will return to normal once the
following conditions are met:
•Once engine coolant temperature reaches about
150°F (65°C).
•The intake temperature reaches a certain level.
The high idle speed will be temporarily interrupted and
the engine speed will return to normal if any of the
following conditions occur:
•The brake pedal is applied.
•The accelerator pedal is pressed.
•The automatic transmission is shifted out of
PARK (P) or NEUTRAL (N).
•The clutch pedal on the manual transmission is
pressed.
•Vehicle speed is detected.
Once these conditions no longer exist, the engine
idle speed will slowly increase to high idle after the
normal delay, if the conditions for engine coolant
temperature and air intake temperature are still met.
2-23
Rear Wheel Park Brake Burnish
Procedure
It is recommended that the rear wheel mounted parking
brake be burnished as part of the new vehicle
break-in. The parking brake will work best after it has
been burnished following these instructions:
Make one or two stops using the parking brake hand
lever or foot pedal from 55 mph (92 km/h) to a stop
with moderate apply. Each stop should occur within
1/4 of a mile.
Notice:Driving with the parking brake on can
overheat the brake system and cause premature
wear or damage to brake system parts. Verify that
the parking brake is fully released and the brake
warning light is off before driving.
Air Brake
If your vehicle has air
brakes, you will have this
parking brake. It is
located above the radio in
the instrument panel.
Pulling it out applies the parking brake. The parking
brake light will come on when the air parking brake is
applied.
2-42
Low Coolant Warning Light............................3-37
Wait to Start Indicator (Diesel Engine).............3-37
Malfunction Indicator Lamp.............................3-38
Oil Pressure Gage........................................3-38
Low Oil Level Light.......................................3-39
Change Engine Oil Light................................3-40
Engine Overspeed Warning Light....................3-40
Engine Shutdown Warning Light.....................3-40
Transmission Temperature Gage.....................3-41
Exhaust Brake Indicator Light.........................3-41
Differential Lock Indicator Light.......................3-42
Reduced Engine Power Light.........................3-42
Highbeam On Light.......................................3-43
Daytime Running Lamps (DRL)
Indicator Light...........................................3-43
Low Washer Fluid Warning Light.....................3-44
Check Gages Warning Light...........................3-44Fuel Gage...................................................3-45
Water in Fuel Warning Light...........................3-46
Air Filter Restriction Indicator..........................3-46
Air Pressure Gage........................................3-47
Hourmeter Gage...........................................3-47
Audio System(s).............................................3-48
Setting the Time...........................................3-49
AM-FM Radio...............................................3-50
Radio with Cassette......................................3-53
Radio with CD..............................................3-59
Theft-Deterrent Feature (Non-RDS Radios).......3-64
Radio Reception...........................................3-64
Care of the Cassette Tape Player...................3-65
Care of Your CDs.........................................3-66
Care of the CD Player...................................3-67
Fixed Mast Antenna......................................3-67
Chime Level Adjustment................................3-67
Section 3 Instrument Panel
3-2
Marker Lamps
If your vehicle has this feature, you can manually blink
the marker and clearance lamps.
The marker lamp defeat
switch is located in the
instrument panel
switchbank.
Press and hold the bottom of the switch to turn off the
marker and clearance lamps. When you release
the switch, the marker and clearance lamps will come
back on.
Instrument Panel Brightness
This feature controls the brightness of the instrument
panel lights.
The thumbwheel for this feature is located to the right of
the exterior lamp control.
Turn the thumbwheel up to brighten the lights. When
the thumbwheel is moved to the first position, the radio
display and transmission selection display will go to
full intensity. The instrument panel cluster will also be
dimly lit. Moving the thumbwheel up to the next position
will activate the interior dome lamps.
Dome Lamps
The dome lamps will come on when you open a door.
You can also turn the dome lamps on by moving
the thumbwheel, located to the right of the exterior lamp
control, all the way up to the second position. In this
position, the dome lamps will remain on whether a door
is open or closed.
3-16
q(Exhaust Brake Switch):SeeDiesel Engine
Exhaust Brake on page 2-27.
l(Differential Lock Control Switch):SeeRear
Axle Differential Lock Control on page 4-11.
c(Airbag On/Off Switch):SeeAirbag Off Switch on
page 1-58.
If your vehicle does not have some of the features
controlled by these switches, there will be a blank switch
marker in its place.
Accessory Power Outlet(s)
With accessory power outlets, you can plug in auxiliary
electrical equipment such as a cellular telephone or
CB radio.
The accessory power outlet is located on the
passenger’s side of the instrument panel.
To use an outlet, pull the cover down. When not using
it, always cover the outlet with the protective cap.
This circuit is protected by a fuse and has a maximum
current level.Notice:Leaving electrical equipment on for
extended periods will drain the battery. Always turn
off electrical equipment when not in use and do
not plug in equipment that exceeds the maximum
amperage rating.
Certain electrical accessories may not be compatible
with the accessory power outlet and could result
in blown vehicle or adapter fuses. If you experience a
problem, see your dealer for additional information
on accessory power outlets.
Notice:Adding any electrical equipment to your
vehicle may damage it or keep other components
from working as they should. The repairs would
not be covered by your warranty. Do not use
equipment exceeding maximum amperage rating of
20 amperes. Check with your dealer before adding
electrical equipment.
When adding electrical equipment, be sure to follow the
proper installation instructions included with the
equipment.
Notice:Improper use of the power outlet can cause
damage not covered by your warranty. Do not
hang any type of accessory or accessory bracket
from the plug because the power outlets are
designed for accessory power plugs only.
3-19