Page 191 of 527

INSTRUMENT CLUSTER DESCRIPTION
1. Check Gauges
This light illuminates when the Voltmeter, Engine
Oil Pressure or Engine Coolant Temperature
gauges indicate a reading either too high or too low.
Examine the gauges carefully, and follow the instructions
contained below for each indicated problem.
NOTE:When the ignition switch is turned to OFF, the
Fuel Gauge, Voltmeter, Oil Pressure and Engine Coolant
Temperature gauges may not show accurate readings.
When the engine is not running, turn the ignition switch
to ON to obtain accurate readings.
2. Voltmeter
When the engine is running, the gauge indicates
the electrical system voltage. The pointer should
stay within the normal range if the battery is charged. Ifthe pointer moves to either extreme left or right and
remains there during normal driving, the electrical sys-
tem should be serviced.
NOTE:If the gauge pointer moves to either extreme of
the gauge, the ªCheck Gaugesº indicator will illuminate
and a single chime will sound.
NOTE:
²The voltmeter may show a gauge fluctuation at vari-
ous engine temperatures. This cycling operation is
caused by the post-heat cycle of the intake manifold
heater system. The number of cycles and the length of
the cycling operation is controlled by the engine
control module. Post-heat operation can run for sev-
eral minutes, and then the electrical system and volt-
meter needle will stabilize.
²The cycling action will cause temporary dimming of
the headlights, interior lights, and also a noticeable
reduction in blower motor speed.
UNDERSTANDING YOUR INSTRUMENT PANEL 189
4
Page 276 of 527
Starting Fluids
WARNING!
STARTING FLUIDS or flammable liquids are
NEVER TO BE USED in the CumminstDiesel (see
Warning label). Never pour diesel fuel, flammable
liquid, starting fluids (ether) into the air cleaner
canister, air intake piping, or turbocharger inlet in an
attempt to start the vehicle. This could result in a
flash fire and explosion causing serious personal
injury and engine damage.
The engine is equipped with an automatic electric air
preheating system. If the instructions in this manual are
followed, the engine should start in all conditions.
WARNING!
Do not leave children or animals inside parked
vehicles in hot weather. Interior heat build up may
cause serious injury or death.
NORMAL OPERATION (DIESEL ENGINE)
Observe the following when the engine is operating.
²All message center lights are off.
²Check Engine Lamp is off.
²Engine Oil Pressure is above 10 psi (69 kPa) at idle.
²Low Oil Pressure light is off.
274 STARTING AND OPERATING
Page 515 of 527

Illuminated Entry........................ 20
Immobilizer (Sentry Key)................... 15
Infant Restraint........................61,62
Inflation Pressure Tires.................... 333
Information Center...................... 143
Information Center, Vehicle................. 143
Inside Rearview Mirror.................... 84
Instrument Cluster....................188,189
Instrument Panel and Controls.............. 187
Instrument Panel Lens Cleaning............. 458
Integrated Power Module (Fuses)............ 459
Interior Appearance Care.................. 457
Interior Lights.......................... 129
Intermittent Wipers (Delay Wipers)........... 136
Intervention Regeneration Strategy........... 425
Introduction............................. 4
Jack Location........................... 385
Jack Operation.......................... 387Jump Starting.......................... 397
Key, Programming........................ 17
Key, Replacement........................ 16
Key, Sentry (Immobilizer)................... 15
Keyless Entry System...................... 21
Keys................................. 12
Knee Bolster............................ 48
Lane Change and Turn Signals.............. 133
Lap Belts.............................. 45
Lap/Shoulder Belts....................... 36
LATCH (Lower Anchors and Tether for
CHildren).............................. 65
Life of Tires............................ 330
Lights..............................78,129
Airbag............................58,190
Anti-Lock Warning..................195,314
Brake Warning........................ 194
INDEX 513
10
Page 516 of 527

Bulb Replacement...................465,466
Cap Top Clearance..................... 474
Cargo .............................. 133
Center Mounted Stop................... 473
Check Engine (Malfunction Indicator)........ 194
Cruise.............................. 199
Daytime Running...................... 132
Dome.............................. 142
Dual Wheel Assembly Rear............... 476
Fog ..........................132,193,469
Four-Wheel Drive Indicator............... 298
Hazard Warning Flasher................. 384
Headlights........................... 131
High Beam........................134,190
High Beam Indicator.................... 190
High Beam/Low Beam Select............. 134
Illuminated Entry....................... 20
Instrument Cluster..................... 189
Intensity Control....................... 130Interior............................. 129
Lights On Reminder.................... 132
Passing............................. 134
Reading............................. 142
Seat Belt Reminder..................... 190
Service...........................465,466
Side Marker.......................... 478
Tire Pressure Monitoring (TPMS)........... 196
Transfer Case......................... 298
Transmission Warning................... 198
Turn Signal..................133,190,466,470
Warning (Instrument Cluster Description)..... 189
Limited-Slip Differential................306,446
Loading Vehicle......................... 352
Tires ............................... 320
Locks................................. 26
Child Protection........................ 30
Door................................ 26
Keys................................ 12
514 INDEX