2008 JEEP GRAND CHEROKEE tires

Miles 37,500 43,750 50,000 56,250 62,500
(Kilometers) (60 000) (70 000) (80 000) (90 000) (100 000)
Change the engine oil and engine oil filter. X X X X X
Rotate the tires. X X
Check spare tire for proper pressure and correct
stowage.X X XXX
Inspect the engine air filter element. Replace as
necessary.XX
Replace the engine air filter element.XXX
Replace the fuel filter/water separator unit. X
Replace the engine accessory drive belt. X
Inspect the brake linings. X X X
Drain and refill the front and rear axles. X X X
Drain and refill the transmission fluid, and change
the filter.X
Drain the transfer case and refill.X
454 SCHEDULE ªBº Ð DIESEL ENGINE
8
M
A
I
N
T
E
N
A
N
C
E
S
C
H
E
D
U
L
E
S

Miles 68,750 75,000 81,250 87,500 93,750 100,000
(Kilometers) (110 000) (120 000) (130 000) (140 000) (150 000) (160 000)
Change the engine oil and engine oil filter. X X X X X X
Rotate the tires. X X X
Check spare tire for proper pressure and cor-
rect stowage.XXXXXX
Inspect the engine air filter element. Re-
place as necessary.XXX
Replace the engine air filter element.XXX
Replace the engine accessory drive belt. X
Replace the fuel filter/water separator unit. X X
Flush and replace the engine coolant/anti-
freeze.X
Inspect the brake linings. X X
Drain the transfer case and refill. X
Drain and refill the front and rear axles. X X
SCHEDULE ªBº Ð DIESEL ENGINE 455
8
M
A
I
N
T
E
N
A
N
C
E
S
C
H
E
D
U
L
E
S

Schedule ªAº Ð Diesel Engine
Miles 12,500 25,000 37,500 50,000
(Kilometers) (20 000) (40 000) (60 000) (80 000)
Change the engine oil and engine oil filter. X X X X
Rotate the tires. X X X X
Check spare tire for proper pressure and correct stowage. X X X X
Inspect the engine air filter element. Replace as neces-
sary.XX
Replace the engine air filter element.XX
Replace the fuel filter/water separator unit. X X
Inspect the brake linings. X X
Drain the transfer case and refill. X X
SCHEDULE ªAº Ð DIESEL ENGINE 457
8
M
A
I
N
T
E
N
A
N
C
E
S
C
H
E
D
U
L
E
S

Miles 62,500 75,000 87,500 100,000
(Kilometers) (100 000) (120 000) (140 000) (160 000)
Change the engine oil and engine oil filter. X X X X
Rotate the tires. X X X X
Check spare tire for proper pressure and correct stowage. X X X X
Inspect the engine air filter element. Replace as neces-
sary.XX
Replace the engine air filter element.XX
Replace the fuel filter/water separator unit. X X
Flush and replace the engine coolant/anti-freeze. X
Replace the engine accessory drive belt. X
Inspect the brake linings. X X
Drain the transfer case and refill. X X
Inspection and service should be performed anytime a
malfunction is observed or suspected. Retain all receipts.LThe replacement of such component is requested
when there is superficial wear, bearing clearance, or
evident grease leak.
458 SCHEDULE ªAº Ð DIESEL ENGINE
8
M
A
I
N
T
E
N
A
N
C
E
S
C
H
E
D
U
L
E
S

DEPARTMENT OF TRANSPORTATION UNIFORM
TIRE QUALITY GRADES
The following describes the tire grading categories estab-
lished by the National highway Traffic Safety Adminis-
tration. The specific grade rating assigned by the tire's
manufacturer in each category is shown on the sidewall
of the tires on your car.
All Passenger Car Tires Must Conform to Federal Safety
Requirements in Addition to These Grades.
Treadwear
The treadwear grade is a comparative rating based on the
wear rate of the tire when tested under controlled con-
ditions on a specified government test course. For ex-
ample, a tire graded 150 would wear one and a half (1
1/2) times as well on the government course as a tire
graded 100. The relative performance of tires depends
upon the actual conditions of their use, however, andmay depart significantly from the norm due to variations
in driving habits, service practices and differences in road
characteristics and climate.
Traction Grades
The traction grades, from highest to lowest, are AA, A, B,
and C. Those grades represent the tire's ability to stop on
wet pavement as measured under controlled conditions
on specified government test surfaces of asphalt and
concrete. A tire marked C may have poor traction perfor-
mance.
WARNING!
The traction grade assigned to this tire is based on
straight-ahead braking traction tests, and does not
include acceleration, cornering, hydroplaning, or
peak traction characteristics.
466 IF YOU NEED CONSUMER ASSISTANCE

Temperature Grades
The temperature grades are A (the highest), B, and C,
representing the tire's resistance to the generation of heat
and its ability to dissipate heat when tested under
controlled conditions on a specified indoor laboratory
test wheel. Sustained high temperature can cause the
material of the tire to degenerate and reduce tire life, and
excessive temperature can lead to sudden tire failure. The
grade C corresponds to a level of performance, which all
passenger car tires must meet under the Federal Motor
Vehicle Safety Standard No. 109. Grades B and A repre-
sent higher levels of performance on the laboratory test
wheel than the minimum required by law.WARNING!
The temperature grade for this tire is established for
a tire that is properly inflated and not overloaded.
Excessive speed, under inflation, or excessive load-
ing, either separately or in combination, can cause
heat buildup and possible tire failure.
IF YOU NEED CONSUMER ASSISTANCE 467
9

ABS (Anti-Lock Brake System)............189,305
Adding Fuel........................... 345
Adding Washer Fluid..................... 178
Adjustable Pedals....................... 134
Air Cleaner, Engine (Engine Air Cleaner Filter) . . . 398
Air Conditioner Maintenance............... 402
Air Conditioning........................ 260
Air Conditioning, Operating Tips............ 268
Air Conditioning Refrigerant............... 403
Air Conditioning System.................. 260
Air Filter.............................. 398
Air Pressure, Tires....................... 319
Airbag................................ 46
Airbag Deployment....................... 53
Airbag Light.......................55,70,189
Airbag Maintenance....................... 55
Alarm, Panic............................ 24
Alarm (Security Alarm).................20,190
Alarm System (Security Alarm)............... 20Alignment and Balance................... 324
Alterations/Modifications, Vehicle............. 9
Antenna, Satellite Radio................... 251
Antifreeze (Engine Coolant)................ 440
Anti-Lock Brake System (ABS)............138,305
Anti-Lock Warning Light.................. 189
Anti-Theft System.....................20,190
Appearance Care........................ 421
Assist, Hill Start........................ 147
Audio Systems (Radio).................... 241
Auto Down Power Windows................ 32
Automatic Dimming Mirror................. 78
Automatic Door Locks..................... 29
Automatic Headlights.................... 124
Automatic Temperature Control (ATC)......... 261
Automatic Transmission................285,417
Adding Fluid......................... 419
Fluid and Filter Changes................. 417
Fluid Level Check...................418,419
470 INDEX

Infant Restraint........................58,59
Inflation Pressure Tires.................... 319
Information Center, Vehicle................. 196
Inside Rearview Mirror.................... 77
Instrument Cluster....................186,188
Instrument Panel and Controls.............. 185
Instrument Panel Lens Cleaning............. 425
Integrated Power Module (Fuses)............ 432
Interior Appearance Care.................. 424
Interior Fuses.......................... 426
Interior Lighting........................ 129
Interior Lights.......................126,129
Intermittent Wipers (Delay Wipers)........... 131
Introduction............................. 4
Inverter, Power......................... 169
Jack Location........................... 372
Jack Operation.......................372,375
Jacking Instructions...................... 375Jump Starting.......................... 378
Key, Programming........................ 19
Key, Replacement........................ 18
Key, Sentry (Immobilizer)................... 17
Key-In Reminder......................... 17
Keyless Entry System...................... 21
Keys................................. 14
Lap/Shoulder Belts....................... 37
LATCH (Lower Anchors and Tether for
CHildren)............................62,63
Lead Free Gasoline...................... 336
Leaks, Fluid............................ 70
Life of Tires............................ 323
Liftgate................................ 34
Liftgate Flipper Glass...................... 35
Liftgate Window Wiper/Washer............. 177
Lights..............................70,123
478 INDEX