Page 417 of 536

WARNING!
Battery fluid is a corrosive acid solution; do not
allow battery fluid to contact eyes, skin or clothing.
Don’t lean over battery when attaching clamps or
allow the clamps to touch each other. If acid splashes
in eyes or on skin, flush contaminated area immedi-
ately with large quantities of water.
A battery generates hydrogen gas which is flam-
mable and explosive. Keep flame or spark away
from the vent holes.
Do not use a booster battery or any other booster
source that has a greater than 12 volt system, i.e. Do
not use a 24 volt power source.
1. Remove all metal jewelry such as watch bands or
bracelets which might make an unintended electrical
contact. 2. Park the booster vehicle within cable reach but with-
out letting the vehicles touch. Set the parking brake on
both vehicles, place the automatic transmission in Park or
the manual transmission in Neutral, and turn the ignition
OFF.
3. Turn off the heater, radio, and all unnecessary electri-
cal loads.
4. Connect one end of a jumper cable to the positive
terminal of the booster battery. Connect the other end of
the same cable to the positive terminal of the discharged
battery.
WARNING!
Do not permit vehicles to touch each other as this
could establish a ground connection and personal
injury could result.
WHAT TO DO IN EMERGENCIES 417
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Page 424 of 536

▫Air Conditioner Maintenance .............440
▫ Power Steering — Fluid Check ............441
▫ Front Suspension Ball Joints ..............441
▫ Steering Linkage — Inspection ............442
▫ Half-Shaft Constant Velocity Joints .........442
▫ Front Prop Shaft Lubrication — 2500/3500
(4X4) Models ........................443
▫ Body Lubrication .....................443
▫ Windshield Wiper Blades ................444
▫ Windshield Washers ...................444
▫ Exhaust System ......................445
▫ Cooling System .......................446
▫ Hoses And Vacuum/Vapor Harnesses .......449 ▫
Brake System ........................450
▫ Clutch Hydraulic System ................451
▫ Clutch Linkage .......................452
▫ Rear Axle And 4X4 Front Driving Axle Fluid
Level ..............................452
▫ Transfer Case ........................453
▫ Manual Transmission ..................453
▫ Automatic Transmission ................454
▫ Front Wheel Bearings ..................457
▫ Selection Of Lubricating Grease ...........457
▫ Noise Control System Required Maintenance &
Warranty For 3500 2-Wheel Drive And 4-Wheel
Drive Models Over 10,000 Lbs. (4 535 Kg) Gross
Vehicle Weight Rating. ..................458
424 MAINTAINING YOUR VEHICLE
Page 454 of 536

Lubricant Selection G56 (6-Speed Manual
Transmission — If Equipped)
This transmission is filled with manual transmission
fluid at the factory. This fluid does not require periodic
changing. If it is necessary to add or change fluid in this
transmission refer to Fluids, Lubricants and Genuine
Parts for correct fluid type. This is the only lubricant
recommended for use in the Getrag G56 transmission.
Automatic Transmission
Fluid Level Check
The fluid level should be checked when the engine is
fully warmed up and the fluid in the transmission is at
normal operating temperature. Operation of the trans-
mission with an improper fluid level will greatly reduce
the life of the transmission and of the fluid. Check the
fluid level whenever the vehicle is serviced.
Fluid Level Check – 45RFE/545RFE/42RLE
Check the fluid level while the transmission is at normal
operating temperature 82°C (180°F). This occurs after at
least 15 miles (25 km) of driving. At normal operating
temperature the fluid cannot be held comfortably be-
tween the fingertips.
To check the automatic transmission fluid level properly,
the following procedure must be used:
1. Operate the engine at idle speed and normal operating
temperature.
2. The vehicle must be on level ground.
3. Fully apply the parking brake and press the brake
pedal.
4. Place the gear selector momentarily in each gear
position ending with the lever in P (Park).
454 MAINTAINING YOUR VEHICLE
Page 456 of 536

Selection Of Lubricant
Refer to Fluids, Lubricants and Genuine Parts for correct
fluid type. It is important that the transmission fluid be
maintained at the prescribed level using the recom-
mended fluid.
CAUTION!
Using a transmission fluid other than the manufac-
turers recommended fluid may cause deterioration
in transmission shift quality and/or torque converter
shudder. Using a transmission fluid other than the
manufacturers recommended fluid will result in
more frequent fluid and filter changes. Refer to
Fluids, Lubricants and Genuine Parts for correct
fluid type.
Automatic Transmission Fluid and Filter Change
It is important that proper lubricant is used in the
transmission. Refer to Fluids, Lubricants and Genuine
Parts for correct fluid type.
The fluid and filter(s) should be changed as specified in
the Maintenance Schedule (Section 8).
NOTE: If the transmission is disassembled for any
reason, the fluid and filter(s) should be changed.
Special Additives
The manufacturer strongly recommends against the ad-
dition of any additives to the transmission. Exception to
this policy is the use of special dyes to aid in detecting
fluid leaks. The use of transmission sealers should be
avoided, since they may adversely affect seals.
456 MAINTAINING YOUR VEHICLE
Page 486 of 536

Chassis
Component Fluids, Lubricants and Genuine Parts.
Automatic Transmission Mopar ATF+4, Automatic Transmission Fluid.
Transfer Case Mopar ATF+4, Automatic Transmission Fluid.
NVG 246 Automatic Transfer Case Only Mopar PN 05179014AA, NVG 246 Automatic Transmission Fluid or
equivalent.
Manaul Transmission Fluid (G238) Mopar ATF+4, Automatic Transmission Fluid.
Manual Transmission Fluid (G-56) Mopar ATF+4, Automatic Transmission Fluid.
Clutch Linkage Multipurpose Grease, NLGI Grade 2 E.P. or equivalent.
1500 Model Front Axle (4X4) GL-5 SAE 75W-90 (MS-9763) or equivalent.
1500 Model Rear Axle Mopar Synthetic Gear Lubricant SAE 75W-140 (MS-8985). Limited-Slip
Rear Axles on 1500 Models Require the addition of 118 ml (4 oz.) Mo-
par limited slip additive or equivalent.
2500/3500 Model Front and Rear Axle Synthetic, GL-5 SAE, 75W-90 or equivalent. Limited-Slip 10.5/11.5 inch Rear Axles DO NOT REQUIRE a limited slip additive.
Brake Master Cylinder Mopar DOT 3 and SAE J1703 should be used or equivalent. If DOT 3
brake fluid is not available, then DOT 4 is acceptable. Use only recom-
mended brake fluids.
Power Steering Reservoir Mopar ATF+4, Automatic Transmission Fluid.
486 MAINTAINING YOUR VEHICLE
Page 490 of 536

At Each Stop for Fuel
•Check the engine oil level about 5 minutes after a fully
warmed engine is shut off. Checking the oil level while
the vehicle is on level ground will improve the accu-
racy of the oil level reading. Add oil only when the
level is at or below the ADD or MIN mark.
•Check the windshield washer solvent and add if
required. When refilling the washer fluid reservoir,
take some washer fluid and apply it to a cloth or towel
and wipe clean the wiper blades, this will help blade
performance.
Once a Month
•Check tire pressure and look for unusual wear or
damage.
•Inspect the battery and clean and tighten the terminals
as required.
•Check the fluid levels of coolant bottle, brake master
cylinder, and transmission and add as needed.
•Check all lights and all other electrical items for correct
operation.
At Each Oil Change
•Change the engine oil filter.
•Lubricate Drivetrain/Steering/Suspension Grease Fit-
tings (if equipped)
•Inspect the exhaust system.
•Inspect the brake hoses.
•Inspect the CV joints/U— joints (if equipped) and
front suspension components.
•Check the automatic transmission fluid level.
•Check the manual transmission fluid level.
•Check the coolant level, hoses, and clamps.
•Lubricate Front Drive Shaft Fitting (2500/3500, 4X4).
490 MAINTENANCE SCHEDULES
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Page 496 of 536
Miles 48,000 51,000 54,000 57,000 60,000
(Kilometers) (80 000) (85 000) (90 000) (95 000) (100 000)
Inspect brake linings. X X
Inspect engine air cleaner filter, replace if neces-
sary. X
Replace spark plugs. X
Inspect and replace ignition cables if necessary. X
Inspect PCV valve, replace as necessary. ** X
Drain and refill automatic transmission fluid and
change main sump filter*. X
496 SCHEDULE “B”
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Page 501 of 536
Miles 105,000 108,000 111,000 114,000 117,000 120,000
(Kilometers) (175 000) (180 000) (185 000) (190 000) (195 000) (200 000)
Inspect engine air cleaner filter, replace if
necessary. XX
Replace spark plugs. X
Inspect and replace ignition cables if neces-
sary. X
Inspect PCV valve, replace as necessary. ** X
Inspect auto tension drive belt and replace if
required (3.7L/4.7L/5.7L). XX
Drain and refill automatic transmission fluid
and change main sump and spin-on cooler
return filter (if equipped)*. X
Flush and replace engine coolant at 120
months if not replaced at 102,000 miles (170
000 km). X
SCHEDULE “B” 501
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