Page 829 of 919

WARNING!(Continued)
•To avoid contamination from foreign matter or
moisture, use only new brake fluid or fluid that has
been in a tightly closed container. Keep the master
cylinder reservoir cap secured at all times. Brake
fluid in a open container absorbs moisture from the
air resulting in a lower boiling point. This may
cause it to boil unexpectedly during hard or pro-
longed braking, resulting in sudden brake failure.
This could result in a collision.
• Overfilling the brake fluid reservoir can result in
spilling brake fluid on hot engine parts, causing
the brake fluid to catch fire. Brake fluid can also
damage painted and vinyl surfaces, care should be
taken to avoid its contact with these surfaces.
(Continued)
WARNING! (Continued)
•Do not allow petroleum based fluid to contaminate
the brake fluid. Brake seal components could be
damaged, causing partial or complete brake failure.
This could result in a collision.
Rear Axle And 4x4 Front Driving Axle Fluid Level
For normal service, periodic fluid level checks are not
required. When the vehicle is serviced for other reasons
the exterior surfaces of the axle assembly should be
inspected. If gear oil leakage is suspected inspect the
fluid level. Refer to “Fluids, Lubricants, And Genuine
Parts” in “Maintaining Your Vehicle” for further informa-
tion. This inspection should be made with the vehicle in
a level position.
7
MAINTAINING YOUR VEHICLE 827
Page 834 of 919

5. Place the gear selector momentarily into each gearposition (allowing time for the transmission to fully
engage in each position), ending with the transmission
in PARK.
6. Remove the dipstick, wipe it clean and reinsert it until seated.
7. Remove the dipstick again and note the fluid level on both sides. The fluid level reading is only valid if there
is a solid coating of oil on both sides of the dipstick.
Note that the holes in the dipstick will be full of fluid
if the actual level is at or above the hole. The fluid level
should be between the “HOT” (upper) reference holes
on the dipstick at normal operating temperature. If the
fluid level is low, add fluid through the dipstick tube
to bring it to the proper level. Do not overfill.Use
ONLY the specified fluid (see Fluids, Lubricants, And
Genuine Parts for fluid specifications). After adding
any quantity of oil through the dipstick tube, wait a minimum of two minutes for the oil to fully drain into
the transmission before rechecking the fluid level.
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.
832 MAINTAINING YOUR VEHICLE
Page 877 of 919
Severe Duty All Models Only
NOTE:Change Engine Oil at 4,000 miles (6,500 km) if the
vehicle is operated in a dusty and off road environment
or is operated predominantly at idle or only very low
engine RPM’s. 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)
and fill as needed
• Check function of all interior and exterior lights
8
MAINTENANCE SCHEDULES 875
Page 879 of 919
Maintenance Chart
Mileage or time passed
(whichever comes first)
20,000
30,000
40,000
50,000
60,000
70,000
80,000
90,000
100,000
110,000
120,000
130,000
140,000
150,000
Or Years: 2 3 4 5 6 7 8 9 10 11 12 13 14 15
Or Kilometers:
32,000
48,000
64,000
80,000
96,000
112,000
128,000
144,000
160,000
176,000
192,000
208,000
224,000
240,000
Additional Inspections
Inspect the CV/Universal joints. X XX X X
Inspect front suspension, tie rod
ends, and replace if necessary. XXX X X X X
Inspect the front and rear axle
surfaces. If gear oil leakage is
suspected, check the fluid level.
If using your vehicle for police,
taxi, fleet, off-road or frequent
trailer towing, change axle fluid. XXX X X X X
8
MAINTENANCE SCHEDULES 877
Page 900 of 919

Brake/Transmission Interlock.................489
Bulb Replacement ..................... .852, 854
Bulbs, Light ......................... .122, 852
Cab Top Clearance Lights ...................860
Camera, Rear ........................... .212
Camper ............................... .271
Capacities, Fluid ......................... .864
Caps, Filler Oil (Engine) .......................... .801
Power Steering ........................ .615
Radiator (Coolant Pressure) ................821
Carbon Monoxide Warning ...............119,680
Cargo Light ............................ .180
Car Washes ............................ .834
Center High Mounted Stop Light ..............858
Center Seat Storage Compartment .............242
Certification Label ........................ .687
Chart, Tire Sizing ........................ .638Check Engine Light (Malfunction Indicator Light) . .795
Checking Your Vehicle For Safety
..............118
Checks, Safety ............................118
Child Restraint ............................85
Child Restraints Booster Seats ...........................90
Child Restraints .........................85
Child Seat Installation .................104, 106
How To Stow An Unused ALR Seat Belt .......102
Infants And Child Restraints ................88
Install A LATCH-Compatible Child Restraint . . . .101
Installing Child Restraints Using The Vehicle Seat
Belt ................................ .103
Locating The LATCH Anchorages ............98
Lower Anchors And Tethers For Children .......93
Older Children And Child Restraints ..........89
Seating Positions ........................92
Cigar Lighter ........................... .235
Clean Air Gasoline ....................... .677
898 INDEX
Page 904 of 919

Flat Tire Stowage..................... .745, 765
Flexible Fuel Vehicles Cruising Range ........................ .683
Engine Oil ........................... .682
Fuel Requirements ...................681, 682
Maintenance .......................... .684
Replacement Parts ...................... .683
Starting ............................. .683
Flooded Engine Starting ....................480
Fluid, Brake ............................ .870
Fluid Capacities ......................... .864
Fluid Leaks ............................ .122
Fluid Level Checks Brake ............................... .826
Power Steering ........................ .615
Fluids, Lubricants And Genuine Parts ...........866
Fog Lights ....................... .176, 317, 856
Fold Flat Load Floor ...................... .249
Four-Way Hazard Flasher ...................727 Four Wheel Drive
........................ .522
Freeing A Stuck Vehicle .....................775
Front Axle (Differential) .....................827
Fuel .................................. .675
Adding ............................. .684
Additives ............................ .679
Clean Air ............................ .677
Ethanol .......................... .677, 681
Filler Cap (Gas Cap) .....................686
Gasoline ............................. .675
Light ............................... .314
Materials Added ....................... .679
Methanol ............................ .677
Octane Rating ..................... .675, 866
Requirements ...................... .675, 864
Tank Capacity ......................... .864
Fuel, Flexible ........................... .681
Fuses ................................. .841
902 INDEX