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Your vehicle has a simple ignition actuated test, which you
can use prior to going to the test station. To check if your
vehicle’s OBD II system isready, you must do the follow-
ing:
1. Cycle the ignition to the ON mode, but do not crank or start the engine.
NOTE: If you crank or start the engine, you will have to
start this test over.
2. As soon as you cycle the ignition to the ON mode, you will see the “Malfunction Indicator Light (MIL)” symbol
come on as part of a normal bulb check.
3. Approximately 15 seconds later, one of two things will happen:
• The MIL will flash for about 10 seconds and then return
to being fully illuminated until you cycle the ignition
OFF or start the engine. This means that your vehicle’s
OBD II system is not readyand you should notproceed
to the I/M station. •
The MIL will not flash at all and will remain fully
illuminated until you place the ignition in the off posi-
tion or start the engine. This means that your vehicle’s
OBD II system is readyand you can proceed to the I/M
station.
If your OBD II system is not ready,you should see your
authorized dealer or repair facility. If your vehicle was
recently serviced or had a battery failure or replacement,
you may need to do nothing more than drive your vehicle
as you normally would in order for your OBD II system to
update. A recheck with the above test routine may then
indicate that the system is now ready.
Regardless of whether your vehicle’s OBD II system is
ready or not, if the MIL is illuminated during normal
vehicle operation you should have your vehicle serviced
before going to the I/M station. The I/M station can fail
your vehicle because the MIL is on with the engine
running.
638 MAINTAINING YOUR VEHICLE
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2500 – 3500 Models Only
NOTE:Under no circumstances should oil change inter-
vals exceed 8,000 miles (13,000 km), twelve months or 350
hours of engine run time, whichever comes first. The 350
hours of engine run or idle time is generally only a concern
for fleet customers.
Engine Oil Selection
For best performance and maximum protection under all
types of operating conditions, the manufacturer only rec-
ommends engine oils that are API Certified and meet the
requirements of FCA Material Standard MS-6395.
American Petroleum Institute (API) Engine Oil
Identification Symbol
This symbol means that the oil has been
certified by the American Petroleum In-
stitute (API). The manufacturer only rec-
ommends API Certified engine oils.
This symbol certifies 0W-20, 5W-20, 0W-
30, 5W-30 and 10W-30 engine oils.
CAUTION!
Do not use chemical flushes in your engine oil as the
chemicals can damage your engine. Such damage is not
covered by the New Vehicle Limited Warranty.
Engine Oil Viscosity — 3.6L Engines (1500 Models
Only)
MOPAR SAE 5W-20 engine oil approved to FCA Material
Standard MS-6395 or equivalent Pennzoil or Shell Helix 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 vehicle. For information on
engine oil filler cap location, refer to “Engine Compart-
ment” in “Maintaining Your Vehicle” for further informa-
tion.
NOTE: MOPAR SAE 5W-30 engine oil approved to FCA
Material Standard MS-6395 may be used when SAE 5W-20
engine oil meeting MS-6395 is not available.
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MAINTAINING YOUR VEHICLE 641
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Engine Oil Viscosity (SAE Grade) — 5.7L Engine
(1500/2500/3500 Models)
MOPAR SAE 5W-20 engine oil approved to FCA Material
Standard MS-6395 such as Pennzoil, Shell Helix or equiva-
lent 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
engine oil filler cap location, refer to the “Engine Compart-
ment” illustration in this section.
Lubricants which 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) — 6.4L Engine
Use MOPAR SAE 0W-40 engine oil approved to FCA
Material Standard MS-12633 such as Pennzoil Ultra
equivalent is recommended for all operating temperatures.
The engine oil filler cap also shows the recommended
engine oil viscosity for your engine. For information on
engine oil filler cap location, refer to the “Engine Compart-
ment” in this section.Lubricants which 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.
Synthetic engine oils which do not have both the engine oil
certification mark and the correct SAE viscosity grade
number should not be used.
Disposing Of Used Engine Oil And Oil Filters
Care should be taken in disposing of used engine oil and
oil filters from your vehicle. Used oil and oil filters,
indiscriminately discarded, can present a problem to the
environment. Contact your authorized dealer, service sta-
tion or governmental agency for advice on how and where
used oil and oil filters can be safely discarded in your area.
Engine Oil Filter
The engine oil filter should be replaced with a new filter at
every engine oil change.
642 MAINTAINING YOUR VEHICLE
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When inspecting accessory drive belts, small cracks that
run across ribbed surface of belt from rib to rib, are
considered normal. These are not a reason to replace belt.
However, cracks running along a rib (not across) are not
normal. Any belt with cracks running along a rib must be
replaced. Also have the belt replaced if it has excessive
wear, frayed cords or severe glazing.Conditions that would require replacement:
•
Rib chunking (one or more ribs has separated from belt
body)
• Rib or belt wear
• Longitudinal belt cracking (cracks between two ribs)
• Belt slips
• “Groove jumping (belt does not maintain correct posi-
tion on pulley)
• Belt broken (identify and correct problem before new
belt is installed)
• Noise (objectionable squeal, squeak, or rumble is heard
or felt while drive belt is in operation)
Some conditions can be caused by a faulty component such
as a belt pulley. Belt pulleys should be carefully inspected
for damage and proper alignment.
Belt replacement on some models requires the use of
special tools, we recommend having your vehicle serviced
at an authorized dealer.
Accessory Belt (Serpentine Belt)
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MAINTAINING YOUR VEHICLE 647
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Refrigerant Recovery And Recycling R1234yf —
If Equipped
R-1234yf Air Conditioning Refrigerant is a hydrofluoole-
fine HFO that is endorsed by the Environmental Protection
Agency and is an ozone-saving product with a low GWP
(Global Warming Potential). However, the manufacturer
recommends that air conditioning service be performed by
authorized dealer or other service facilities using recovery
and recycling equipment.
NOTE:Use only manufacturer approved A/C system
PAG compressor oil and refrigerants.
Cabin Filter Replacement (A/C Air Filter)
Refer to the “Maintenance Schedule” for the proper main-
tenance intervals.
WARNING!
Do not remove the cabin air filter while the vehicle is
running, or while the ignition is in the ACC or ON/
RUN mode. With the cabin air filter removed and the
blower operating, the blower can contact hands and
may propel dirt and debris into your eyes, resulting in
personal injury.
The cabin air filter is located in the fresh air inlet behind the
glove compartment. Perform the following procedure to
replace the filter:
1. Open the glove compartment and remove all contents.
650 MAINTAINING YOUR VEHICLE
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FLUID CAPACITIES
U.S.Metric
Fuel (Approximate)
1500 Regular Cab Shortbed/Crew Quad Cab Models 26 Gallons98 Liters
1500 Regular Cab Longbed/Crew Quad Cab Models (Optional) 32 Gallons121 Liters
2500/3500 Shortbed Models 31 Gallons117 Liters
2500/3500 Longbed Models 32 Gallons121 Liters
Engine Oil With Filter
3.6L Engine (We recommend you use SAE 5W-20, API Certified) 6 Quarts5.6 Liters
5.7L Engines (We recommend you use SAE 5W-20, API Certified) 7 Quarts6.6 Liters
6.4L Engines (We recommend you use SAE 0W-40 engine oil meeting
the requirements of FCA Material Standard MS-12633 for use in all
operating temperatures.) 7 Quarts
6.6 Liters
Cooling System
3.6L Engine (We recommend you use MOPAR Antifreeze/Coolant 10
Year/150,000 Mile Formula that meets the requirements of FCA Mate-
rial Standard MS.90032.) 13.7 Quarts
13 Liters
5.7L Engine – 1500 Models (We recommend you use MOPAR
Antifreeze/Coolant 10 Year/150,000 Mile Formula that meets the re-
quirements of FCA Material Standard MS.90032.) 18.3 Quarts
17.3 Liters
7
MAINTAINING YOUR VEHICLE 697
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U.S.Metric
5.7L Engine – 2500/3500 Models (We recommend you use MOPAR
Antifreeze/Coolant 10 Year/150,000 Mile Formula that meets the re-
quirements of FCA Material Standard MS.90032.) 18.3 Quarts
17.3 Liters
6.4 Liter Engine – 2500/3500 Models (We recommend you use
MOPAR Antifreeze/Coolant 10 Year/150,000 Mile Formula that meets
the requirements of FCA Material Standard MS.90032.) 16.6 Quarts
15.7 Liters
FLUIDS, LUBRICANTS, AND GENUINE PARTS
Engine
Component Fluid, Lubricant, or Genuine Part
Engine Coolant We recommend you use MOPAR Antifreeze/Coolant 10
Year/150,000 Mile Formula OAT (Organic Additive Tech-
nology).
Engine Oil – 3.6L Engine We recommend you use API Certified SAE 5W-20 Engine
Oil, meeting the requirements of FCA Material Standard
MS-6395 such as MOPAR, Pennzoil, and Shell Helix. Refer
to your engine oil filler cap for correct SAE grade.
MOPAR SAE 5W-30 engine oil approved to FCA Material
Standard MS-6395 may be used when SAE 5W-20 engine
oil meeting MS-6395 is not available.
698 MAINTAINING YOUR VEHICLE
Page 703 of 734
Chassis
ComponentFluid, Lubricant, or Genuine Part
Automatic Transmission – Eight-Speed Automatic
Use only MOPAR ZF 8&9 Speed ATF Automatic Transmis-
sion Fluid, or equivalent. Failure to use the correct fluid may
affect the function or performance of your transmission.
Automatic Transmission – Six-Speed Automatic with Gaso-
line Engine (For Diesel Engine see Diesel Supplement) Use only ATF+4 Automatic Transmission Fluid. Failure to
use ATF+4 fluid may affect the function or performance of
your transmission. We recommend MOPAR ATF+4 fluid.
Transfer Case We recommend you use MOPAR BW44–44 Transfer Case Fluid.
Front Axle – 1500 Four-Wheel Drive Models We recommend you use MOPAR GL-5 Synthetic Axle
Lubricant SAE 75W-85.
Rear Axle – 1500 Models We recommend you use MOPAR Synthetic Gear Lubricant
SAE 75W-140 (MS-8985). Limited-Slip Rear Axles require
the addition of 5 oz. (148 ml) MOPAR Limited Slip Addi-
tive (MS-10111).
7
MAINTAINING YOUR VEHICLE 701