Page 625 of 806
will flash continuously until all requirements are met
or until the NEUTRAL (N) button is released.
• The ignition switch must be in the ON/RUN position
for a shift to take place and for the position indicator
lights to be operable. If the ignition switch is not in the
ON/RUN position, the shift will not take place and no
position indicator lights will be on or flashing.
• A flashing NEUTRAL (N) position indicator light
indicates that shift requirements have not been met.Shifting Out Of NEUTRAL (N)
Use the following procedure to prepare your vehicle for
normal usage.
1. Bring the vehicle to a complete stop, leaving it con- nected to the tow vehicle.
2. Firmly apply the parking brake.
3. Press and hold the brake pedal.
4. Start the engine. Shift the transmission into NEU- TRAL. Depress the clutch pedal on a manual trans-
mission.
• With manual shift transfer case, shift the transfer
case lever to the desired position.
5
STARTING AND OPERATING 623
Page 626 of 806

•With electronic shift transfer case with rotary selector
switch, press and hold the transfer case NEUTRAL
(N) button until the NEUTRAL (N) indicator light
turns off. After the NEUTRAL (N) indicator light
turns off, release the NEUTRAL (N) button. After the
NEUTRAL (N) button has been released, the transfer
case will shift to the position indicated by the selec-
tor switch.
• With electronic shift transfer case with pushbutton
selector switch, press and hold the switch for the
desired transfer case position, until the NEUTRAL
(N) indicator light turns off and the desired position
indicator light turns on. NOTE:
When shifting out of transfer case NEUTRAL (N),
turning the engine OFF is not required, but may be
helpful to avoid gear clash. With the 8-speed automatic
transmission, the engine must remain running, since
turning the engine OFF will shift the transmission to
PARK (and the transmission must be in NEUTRAL for
the transfer case to shift out of NEUTRAL).
5. Turn the engine OFF. Shift automatic transmission into PARK. On 8-speed transmissions the shifter will auto-
matically select PARK when the engine is turned off.
6. Release the brake pedal (and clutch pedal on a manual transmission).
7. Disconnect vehicle from the tow vehicle.
8. Start the engine.
9. Press and hold the brake pedal.
10. Release the parking brake.
624 STARTING AND OPERATING
Page 627 of 806

11. Shift the transmission into gear, release the brakepedal (and clutch pedal on manual transmissions),
and check that the vehicle operates normally.
NOTE: With electronic shift transfer case:
• Steps 3 and 4 are requirements that must be met prior
to pressing the button to shift out of NEUTRAL (N),
and must continue to be met until the shift has been
completed. If any of these requirements are not met
before pressing the button or are no longer met during
the shift, the NEUTRAL (N) indicator light will flash
continuously until all requirements are met or until the
button is released. •
The ignition switch must be in the ON/RUN position
for a shift to take place and for the position indicator
lights to be operable. If the ignition switch is not in the
ON/RUN position, the shift will not take place and no
position indicator lights will be on or flashing.
• A flashing NEUTRAL (N) position indicator light
indicates that shift requirements have not been met.
5
STARTING AND OPERATING 625
Page 726 of 806

NOTE:If it is necessary to check the transmission below
the operating temperature, the fluid level should be
between the two “COLD” (lower) holes on the dipstick
with the fluid at 60-70°F / 16-21°C. Only use the COLD
region of the dipstick as a rough reference when setting
the fluid level after a transmission service or fluid
change. Re-check the fluid level, and adjust as required,
once the transmission reaches normal operating tempera-
ture.
CAUTION!
If the fluid temperature is below 50°F (10°C) it may
not register on the dipstick. Do not add fluid until
the temperature is elevated enough to produce an
accurate reading. Run the engine at idle, in PARK, to
warm the fluid.
8. Check for leaks. Release the parking brake. NOTE:
To prevent dirt and water from entering the
transmission after checking or replenishing fluid, make
sure that the dipstick cap is properly reseated. It is
normal for the dipstick cap to spring back slightly from
its fully seated position, as long as its seal remains
engaged in the dipstick tube.
Fluid And Filter Changes — Eight-Speed
Transmission
Under normal operating conditions, the fluid installed at
the factory will provide satisfactory lubrication for the
life of the vehicle.
Routine fluid and filter changes are not required. How-
ever change the fluid and filter if the fluid becomes
contaminated (with water, etc.), or if the transmission is
disassembled for any reason.
724 MAINTAINING YOUR VEHICLE
Page 737 of 806
CavityCartridge Fuse Micro Fuse Description
F06 40 Amp Green Antilock Brakes/Electronic Stability Con-
trol Pump
F07 40 Amp Green Starter Solenoid
F08 20 Amp Yellow Emissions Diesel – If Equipped
F09 40 Amp Green
(Cummins Diesel)
30 Amp Pink (1500 LD Diesel) Diesel Fuel Heater – If Equipped
F10 40 Amp Green Body Controller / Exterior Lighting #2
F10 50 Amp Red Body Controller / Exterior Lighting #2 – If
Equipped with Stop/Start
F11 30 Amp Pink Integrated Trailer Brake Module – If
Equipped
F12 40 Amp Green Body Controller #3 / Interior Lights
F13 40 Amp Green Blower Motor
F14 40 Amp Green Body Controller #4 / Power Locks
7
MAINTAINING YOUR VEHICLE 735
Page 738 of 806
CavityCartridge Fuse Micro Fuse Description
F15 30 Amp Pink Electric Park Brake Right Side – If
Equipped
F19 30 Amp Pink SCR – If Equipped
F20 30 Amp Pink Passenger Door Module
F21 30 Amp Pink Drive Train Control Module
F22 20 Amp Yellow Engine Control Module
F23 30 Amp Pink Body Controller #1
F24 30 Amp Pink Driver Door Module
F25 30 Amp Pink Front Wiper Low Speed
F25 30 Amp Pink Front Wiper High Speed
F26 30 Amp Pink Antilock Brakes/Stability Control
Module/Valves
F28 20 Amp Yellow Trailer Tow Backup Lights – If Equipped
F29 20 Amp Yellow Trailer Tow Parking Lights – If Equipped
F30 30 Amp Pink Trailer Tow Receptacle
736 MAINTAINING YOUR VEHICLE
Page 767 of 806
•2500 – 3500 Models
• Under no circumstances should oil change intervals
exceed 8,000 miles (13,000 km) or twelve months on
2500 – 3500 trucks, whichever comes first.
• Severe Duty All Models
• Change Engine Oil at 4000 miles (6,500 km) if the
vehicle is operated in a dusty and off road environ-
ment. This type of vehicle use is considered Severe
Duty Once A Month Or Before A Long Trip:
•
Check engine oil level
• Check windshield washer fluid level
• Check tire pressure and look for unusual wear or
damage. Rotate tires at the first sign of irregular wear,
even if it occurs before the oil indicator system turns
on.
• Check the fluid levels of the coolant reservoir, brake
master cylinder, power steering (2500/3500 Models
Only) and automatic transmission (six-speed only) as
needed
• Check function of all interior and exterior lights
8
M
A I
N T
E
N
A
N
C E
S
C
H E
D
U L
E
SMAINTENANCE SCHEDULES 765
Page 786 of 806

Adding Engine Coolant (Antifreeze)............711
Adding Fuel ............................ .586
Additives, Fuel .......................... .580
Adjustable Pedals ........................ .187
Airbag ..................................68
Airbag Deployment ........................79
Airbag Light .............................76
Airbag Maintenance ........................81
Airbag, Side ..............................72
Airbag, Window (Side Curtain) ................72
Air Cleaner, Engine (Engine Air Cleaner Filter) . . . .701
Air Conditioner Maintenance .................702
Air Conditioning ......................... .361
Air Conditioning Controls ...................361
Air Conditioning Refrigerant .................702
Air Conditioning System ....................361
Air Pressure, Tires ........................ .552
Air Suspension .......................... .459
Alarm Light ............................ .289Alarm, Panic
.............................28
Alarm (Security Alarm) ......................22
Alarm System (Security Alarm) ................22
Alterations/Modifications, Vehicle ...............7
Antifreeze (Engine Coolant) ..................710
Disposal ............................. .713
Anti-Lock Brake System (ABS) ................527
Anti-Lock Warning Light ....................284
Appearance Care ........................ .725
Ashtray ............................... .231
Auto Down Power Windows ..................47
Automatic Door Locks ......................39
Automatic Headlights ..................... .170
Automatic High Beams .....................173
Automatic Transmission ....................403
Adding Fluid ......................... .723
Fluid and Filter Changes ..................724
Fluid Change ......................... .724
Fluid Level Check ...................... .721
784 INDEX