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
Replace spark plugs
(5.7L engine).** XX X X X
Replace the ignition cables
(4.7L Engine). X
Flush and replace the engine
coolant at 10 years or 150,000
miles (240,000 km) whichever
comes first. XX
Change automatic transmission
fluid and filter(s), if using your
vehicle for police, taxi, fleet, or
frequent trailer towing. X
708 MAINTENANCE SCHEDULES
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
Change automatic transmission
fluid and filter. X
Inspect the transfer case fluid,
change for any of the following:
police, taxi, fleet, or frequent
trailer towing. X
Change the transfer case fluid. X
Inspect and replace PCV valve if
necessary. X
** The spark plug change interval is mileage based only,
yearly intervals do not apply.
8
MAINTENANCE SCHEDULES 709
Sentry Key (Immobilizer)....................18
Sentry Key Programming ....................20
Sentry Key Replacement .....................19
Service Assistance ........................ .713
Service Contract ......................... .715
Service Manuals ......................... .718
Settings, Personal ........................ .283
Shifting ............................... .352
Automatic Transmission ..................355
Transfer Case ......................... .390
Transfer Case, Shifting into Transfer Case
Neutral (N) .......................... .569
Transfer Case, Shifting out of Transfer Case
Neutral (N) .......................... .572
Shift Lever Override ...................... .624
Shoulder Belts ............................50
Shoulder Belt Upper Anchorage ................58
Side Airbag ..............................73
Signals, Turn ........................... .120Sliding Rear Window
Power .............................. .223
SmartBeams ............................ .160
Snow Chains (Tire Chains) ...................509
Snow Plow ............................. .561
Snow Tires ............................. .502
Spare Tire .............................. .503
Spark Plugs ............................ .698
Speed Control (Cruise Control) ................177
Speedometer ............................ .260
Stabilizer/Sway Bar System ..................420
Starting .................................30
Automatic Transmission ..................342
Cold Weather ......................... .345
Engine Fails to Start .....................345
Remote ...............................30
Starting Procedures (Gas Engines) .............342
Steering Power .............................. .466
10
INDEX 735
