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“police, taxi, fleet, or frequent trailer towing.” Refer to
“Maintenance Schedule” for the proper maintenance
intervals.
NOTE:Check the four-speed transmission fluid level
before towing. The six-speed transmission is sealed and
the fluid level cannot be checked. See your authorized
dealer for assistance.
Electronic Speed Control – If Equipped
Do not use in hilly terrain or with heavy loads.
When using the speed control, if you experience speed
drops greater than 10 mph (16 km/h), disengage until
you can get back to cruising speed.
Use speed control in flat terrain and with light loads to
maximize fuel efficiency.
AutoStick – If Equipped
By using the AutoStick modes and selecting a specific
gear range, frequent shifting can be avoided. The
highest gear range should be selected that allows for
adequate performance. For example, choose “4” if the
desired speed can be maintained. Choose “3” or “2” if
needed to maintain the desired speed.
Extended driving at high RPM should be avoided to
prevent excess heat generation. A reduction in vehicle
speed may be required to avoid extended driving at
high RPM. Return to a higher gear range or vehicle
speed when road conditions and RPM level allows.
376 STARTING AND OPERATING
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MAINTAINING YOUR VEHICLE
CONTENTS
Engine Compartment — 2.4L ............. 403
Engine Compartment — 3.5L ............. 404
Onboard Diagnostic System — OBD II ...... 405
▫ Loose Fuel Filler Cap Message ........... 405
Emissions Inspection And Maintenance
Programs ............................ 406
Replacement Parts ..................... 407
Dealer Service ........................ 407
Maintenance Procedures ................. 408 ▫
Engine Oil ......................... 409
▫ Engine Oil Filter ..................... 412
▫ Engine Air Cleaner Filter ............... 412
▫ Maintenance-Free Battery .............. 413
▫ Air Conditioner Maintenance ............ 414
▫ A/C Air Filter – If Equipped ............ 416
▫ Body Lubrication .................... 417
▫ Wiper Blades ....................... 418
▫ Adding Washer Fluid ................. 420
7
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ONBOARD DIAGNOSTIC SYSTEM — OBD II
Your vehicle is equipped with a sophisticated Onboard
Diagnostic system called OBD II. This system monitors
the performance of the emissions, engine, and automatic
transmission control systems. When these systems are
operating properly, your vehicle will provide excellent
performance and fuel economy, as well as engine emis-
sions well within current government regulations.
If any of these systems require service, the OBD II system
will turn on the “Malfunction Indicator Light (MIL).” It
will also store diagnostic codes and other information to
assist your service technician in making repairs. Al-
though your vehicle will usually be drivable and not
need towing, see your authorized dealer for service as
soon as possible.CAUTION!
•Prolonged driving with the MIL on could cause
further damage to the emissions control system. It
could also affect fuel economy and driveability.
The vehicle must be serviced before any emissions
tests can be performed.
•If the MIL is flashing while the engine is running,
severe catalytic converter damage and power loss
will soon occur. Immediate service is required.
Loose Fuel Filler Cap Message
If the vehicle diagnostic system determines that the fuel
filler cap is loose, improperly installed, or damaged, the
word “gASCAP” will display in the odometer. If this
occurs, tighten the fuel filler cap until a “clicking” sound
is heard and press the TRIP ODOMETER button to turn
off the message. If the problem persists, the message will
appear the next time the vehicle is started.
7
MAINTAINING YOUR VEHICLE 405
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A loose, improperly installed, or damaged fuel filler cap
may also turn on the MIL.
EMISSIONS INSPECTION AND MAINTENANCE
PROGRAMS
In some localities, it may be a legal requirement to pass
an inspection of this vehicle’s emissions control system.
Failure to pass could prevent vehicle registration.For states that require an Inspection and Mainte-
nance (I/M), this check verifies the Malfunction
Indicator Light (MIL) is functioning and is not on
when the engine is running, and that the OBD II system
is ready for testing.
Normally, the OBD II system will be ready. The OBD II
system may notbe ready if the vehicle was recently
serviced, recently had a dead battery, or a battery replace-
ment. If the OBD II system should be determined not
ready for the I/M test, the vehicle may fail the test. This vehicle has a simple ignition key-actuated test,
which you can use prior to going to the test station. To
check if this vehicle’s OBD II system is ready, you must
do the following:
1. Insert the ignition key into the ignition switch.
2. Turn the ignition to the ON position, but do not crank
or start the engine.
3. If you crank or start the engine, you will have to start
this test over.
4. As soon as you turn the ignition key to the ON
position, you will see the MIL symbol come on as part of
a normal bulb check.
5. Approximately 15 seconds later, one of two things will
happen:
a. The MIL will flash for about 10 seconds and then
return to being fully illuminated until you turn OFF
406 MAINTAINING YOUR VEHICLE
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CAUTION! (Continued)
•Your vehicle has been built with improved fluids
that protect the performance and durability of
your vehicle and also allow extended maintenance
intervals. Do not use chemical flushes in these
components as the chemicals can damage your
engine, transmission, power steering or air condi-
tioning. 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 engine lubrication, 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 afully warmed engine is shut off. Do not check oil level
before starting the engine after it has sat overnight.
Checking engine oil level when the engine is cold will
give you an incorrect reading.
Checking the oil while the vehicle is on level ground and
only when the engine is hot, will improve the accuracy of
the oil level readings. Maintain the oil level between the
range markings on the dipstick. Either the range mark-
ings consist of a crosshatch zone marked SAFE or a
crosshatch zone marked with MIN at the low end of the
range and MAX at the high end of the range. Adding
1.0 qt (1.0 l) of oil when the reading is at the low end of
the range marking will raise the oil level to the high end
of the range marking.
7
MAINTAINING YOUR VEHICLE 409
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Engine Oil Viscosity (SAE Grade) – 2.4L Engine
SAE 5W-20 engine oil is recommended for all operating
temperatures. This engine oil improves low temperature
starting and vehicle fuel economy.
The engine oil filler cap also shows the recommended
engine oil viscosity for your engine. For information on
the engine oil filler cap location, refer to “Engine Com-
partment” in “Maintaining Your Vehicle” for further
information.
Lubricants that do not have both, the engine oil certifi-
cation mark and the correct SAE viscosity grade number
should not be used.
Engine Oil Viscosity (SAE Grade) – 3.5L Engine
SAE 10W-30 engine oil is recommended for all operating
temperatures.
The engine oil filler cap also shows the recommended
engine oil viscosity for your engine. For information onengine oil filler cap location, refer to “Engine Compart-
ment” in “Maintaining Your Vehicle” for further informa-
tion.
Lubricants that do not have both, the engine oil certifi-
cation mark and the correct SAE viscosity grade number
should not be used.
Synthetic Engine Oils
You may use synthetic engine oils provided the recom-
mended oil quality requirements are met, and the recom-
mended maintenance intervals for oil and filter changes
are followed.
Materials Added to Engine Oil
Do not add any supplemental materials, other than leak
detection dyes, to the engine oil. Engine oil is an engi-
neered product and its performance may be impaired by
supplemental additives.7
MAINTAINING YOUR VEHICLE 411
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WARNING!
•Exhaust gases can injure or kill. They contain
carbon monoxide (CO), which is colorless and
odorless. Breathing it can make you unconscious
and can eventually poison you. To avoid breathing
CO, refer to “Safety Tips/Exhaust Gas” in “Things
To Know Before Starting Your Vehicle” for further
information.
•A hot exhaust system can start a fire if you park
over materials that can burn. Such materials might
be grass or leaves coming into contact with your
exhaust system. Do not park or operate your ve-
hicle in areas where your exhaust system can
contact anything that can burn.
CAUTION!
•The catalytic converter requires the use of un-
leaded fuel only. Leaded gasoline will destroy the
effectiveness of the catalyst as an emissions con-
trol device and may seriously reduce engine per-
formance and cause serious damage to the engine.
•Damage to the catalytic converter can result if your
vehicle is not kept in proper operating condition.
In the event of engine malfunction, particularly
involving engine misfire or other apparent loss of
performance, have your vehicle serviced promptly.
Continued operation of your vehicle with a severe
malfunction could cause the converter to overheat,
resulting in possible damage to the converter and
vehicle.
422 MAINTAINING YOUR VEHICLE
Page 443 of 512
CavityCartridge
Fuse Mini-
Fuse Description
J1 40 Amp Green —Power Folding Seat
J2 30 Amp Pink —Transfer Case Module
– If Equipped
J3 30 Amp Pink —Rear Door Module
J4 25 Amp Natural —Driver Door Node
J5 25 Amp Natural —Passenger Door Node
J6 40 Amp Green —Anti-Lock Brake Sys-
tem (ABS) Pump/
Electronic Stability
Program (ESP)Cavity
Cartridge
Fuse Mini-
Fuse Description
J7 30 Amp Pink —Anti-Lock Brake Sys-
tem (ABS) Valve/
Electronic Stability
Program (ESP)
J8 40 Amp Green —Power Memory Seat –
If Equipped
J9 40 Amp Green —Flex Fuel/PZEV Mo-
tor – If Equipped
J10 30 Amp Pink —(If Equipped) Head-
lamp Washer Relay-
(BUX), Manifold Tun-
ing Valve
J11 30 Amp Pink —(If Equipped) Sway
Bar/Thatchum Secu-
rity (BUX)/Power
Sliding Door
442 MAINTAINING YOUR VEHICLE