Page 638 of 743
ENGINE COMPARTMENT — 3.6L
1 — Air Cleaner Filter5 — Battery
2 — Engine Oil Dipstick 6 — Washer Fluid Reservoir
3 — Engine Oil Fill 7 — Power Distribution Center (Fuses)
4 — Brake Fluid Reservoir 8 — Engine Coolant Reservoir
636 MAINTAINING YOUR VEHICLE
Page 639 of 743
ENGINE COMPARTMENT — 4.7L
1 — Air Cleaner Filter6 — Power Distribution Center (Fuses)
2 — Automatic Transmission Dipstick 7 — Washer Fluid Reservoir
3 — Engine Oil Dipstick 8 — Engine Oil Fill
4 — Brake Fluid Reservoir 9 — Coolant Pressure Cap
5 — Battery 10 — Engine Coolant Reservoir
7
MAINTAINING YOUR VEHICLE 637
Page 640 of 743
ENGINE COMPARTMENT — 5.7L
1 — Air Cleaner Filter7 — Washer Fluid Reservoir
2 — Automatic Transmission Dipstick (6-Speed Trans Only) 8 — Power Distribution Center (Fuses)
3 — Engine Oil Fill 9 — Power Steering Fluid Reservoir (2500/3500 Models Only)
4 — Engine Oil Dipstick 10 — Coolant Pressure Cap
5 — Brake Fluid Reservoir 11 — Engine Coolant Reservoir
6 — Battery 638 MAINTAINING YOUR VEHICLE
Page 645 of 743

CAUTION!(Continued)
•Your vehicle has been built with improved fluids
that protect the performance and durability of your
vehicle and also allow extended maintenance inter-
vals. Do not use chemical flushes in these compo-
nents as the chemicals can damage your engine,
transmission, power steering or air conditioning.
Such damage is not covered by the New Vehicle
Limited Warranty. If a flush is needed because of
component malfunction, use only the specified
fluid for the flushing procedure.
Engine Oil
Checking Oil Level
To assure proper lubrication of your vehicle’s engine, the
engine oil must be maintained at the correct level. Check
the oil level at regular intervals, such as every fuel stop. The best time to check the engine oil level is about five
minutes after a fully warmed up engine is shut off.
Checking the oil while the vehicle is on level ground will
improve the accuracy of the oil level readings. Always
maintain the oil level within the SAFE zone on the
dipstick. Adding one quart of oil when the reading is at
the bottom of the SAFE zone will result in a reading at the
top of the safe zone on these engines.
CAUTION!
Overfilling or underfilling the crankcase will cause
oil aeration or loss of oil pressure. This could damage
your engine.7
MAINTAINING YOUR VEHICLE 643
Page 669 of 743

Use the following procedure to check the transmission
fluid level properly:
1. Monitor the transmission temperature using the EVICdisplay, and operate the vehicle as required to reach
the normal operating temperature.
2. Park the vehicle on level ground.
3. Run the engine at normal idle speed for at least 60 seconds, and leave the engine running for the rest of
this procedure.
4. Fully apply the parking brake and press the brake pedal.
5. Place the shift lever momentarily into each gear posi- tion (allowing time for the transmission to fully en-
gage 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 recommended fluid (see Fluids, Lubri-
cants, 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.
7
MAINTAINING YOUR VEHICLE 667
Page 707 of 743

•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
Required Maintenance
Refer to the Maintenance Schedules on the following
pages for required maintenance.
At Every Oil Change Interval As Indicated By Oil Change Indicator System:
•Change oil and filter.
• Rotate the tires. Rotate at the first sign of irregu-
lar wear, even if it occurs before the oil indicator
system turns on.
• Inspect battery and clean and tighten terminals as
required.
At Every Oil Change Interval As Indicated By Oil
Change Indicator System:
•Inspect automatic transmission fluid if equipped
with dipstick.
• Inspect brake pads, shoes, rotors, drums, hoses
and park brake.
• Inspect engine cooling system protection and
hoses.
• Inspect exhaust system.
• Inspect engine air cleaner if using in dusty or
off-road conditions.
• Lube the front drive shaft fitting (2500/3500 (4x4)
models only). 8
MAINTENANCE SCHEDULES 705
Page 734 of 743

Off-Pavement Driving (Off-Road)..............422
Off-Road Driving (Off-Pavement) ..............422
Oil, Engine ............................. .643
Capacity ............................ .696
Change Interval ....................... .644
Dipstick ............................. .643
Disposal ............................. .645
Filter ............................... .646
Filter Disposal ........................ .645
Identification Logo ..................... .644
Recommendation ...................... .644
Synthetic ............................ .645
Viscosity ............................ .645
Oil Filter, Selection ....................... .646
Onboard Diagnostic System ..................639
Operating Precautions ..................... .639
Operator Manual (Owner’s Manual) .............4
Outside Rearview Mirrors ...................129
Overdrive .............................. .374Overdrive OFF Switch
..................... .374
Overhead Console ........................ .191
Overheating, Engine ...................... .264
Owner’s Manual (Operator Manual) .............4
Paint Care ............................. .668
Panic Alarm ..............................27
Parking Brake ........................... .468
Park Sense System, Rear ....................180
Passing Light ........................... .168
Pedals, Adjustable ........................ .175
Personal Settings ......................... .283
Pets ...................................115
Pets, Transporting .........................115
Pickup Box ............................. .226
Placard, Tire and Loading Information ..........494
Power Distribution Center (Fuses) ................675
Door Locks ............................
36
732 INDEX