Page 338 of 466

þAlso, check the trailer tires for proper tire inflation
pressures before trailer usage.
þCheck for signs of tire wear or visible tire damage
before towing a trailer. Refer to ªTires±General Infor-
mationº in this section for information on tread wear
indicators and for the proper inspection procedure.
þWhen replacing tires, refer to ªTires±General Informa-
tionº in this section for information on replacement
tires and for the proper tire replacement procedures.
Replacing tires with a higher load carrying capacity
will not increase the vehicle's GVWR and GAWR
limits.
Towing Requirements Ð Trailer Brakes
þ
Donotinterconnect the hydraulic brake system or
vacuum system of your vehicle with that of the trailer.
This could cause inadequate braking and possible
personal injury.
þAn electronically actuated trailer brake controller is
required when towing a trailer with electronically
actuated brakes. When towing a trailer equipped with
a hydraulic surge actuated brake system, an electronic
brake controller is not required.
þTrailer brakes are recommended for trailers over 1,000
lbs (454 kg) and required for trailers in excess of 2,000
lbs (907 kg).
CAUTION!
If the trailer weighs more than 1,000 lbs (454 kg)
loaded, it should have its own brakes, and they
should be of adequate capacity. Failure to do this
could lead to accelerated brake lining wear, higher
brake pedal effort, and longer stopping distances.
338 STARTING AND OPERATING
Page 339 of 466
WARNING!
Do not connect trailer brakes to your vehicle's hy-
draulic brake lines. It can overload your brake sys-
tem and cause it to fail. You might not have brakes
when you need them and could have an accident.
Towing any trailer will increase your stopping dis-
tance. When towing, you should allow for additional
space between your vehicle and the vehicle in front
of you. Failure to do so could result in an accident.
Towing Requirements Ð Trailer Lights & Wiring
Whenever you pull a trailer, regardless of the trailer size,
stoplights and turn signals on the trailer are required for
motoring safety.
The Trailer Tow Package may includea4and7pin
wiring harness. Use a factory approved trailer harness
and connector.
NOTE:Do not cut or splice wiring into the vehicles
wiring harness.
STARTING AND OPERATING 339
5
Page 340 of 466
The electrical connections are all complete to the vehicle
but you must mate the harness to a trailer connector.
Refer to the following illustrations.
4 - Pin Connector
7 - Pin Connector
340 STARTING AND OPERATING
Page 341 of 466

Towing Tips
Before setting out on a trip, practice turning, stopping,
and backing the trailer in an area located away from
heavy traffic.
Towing Tips Ð Automatic Transmission
The ªDº range can be selected when towing. However, if
frequent shifting occurs while in this range, the ª3º range
should be selected.
NOTE:Using the ª3º range while operating the vehicle
under heavy operating conditions will improve perfor-
mance and extend transmission life by reducing exces-
sive shifting and heat build up. This action will also
provide better engine braking.
If you REGULARLY tow a trailer for more than 45
minutes of continuous operation, then change the auto-
matic transamission fluid and filter according to the
interval specified for ªpolice, taxi, fleet, or frequent trailer
towingº in the ªMaintenance Scheduleº in this manual.
Towing Tips Ð Electronic Speed Control (If
Equipped)
þ
Don't use in hilly terrain or with heavy loads.
þWhen using the speed control, if you experience speed
drops greater than 10 mph (16 km/h), disengage until
you can get back to cruising speed.
þUse speed control in flat terrain and with light loads to
maximize fuel efficiency.
Towing Tips Ð Autostickt(If Equipped)
þ
For vehicles equipped with Autostick.tBy using the
Autosticktmodes, and selecting a specific gear range,
frequent shifting can be avoided. The highest gear
range should be selected that allows for adequate
performance. For example, choose ª4º if the desired
speed can be maintained. Choose ª3º or ª2º if needed
to maintain the desired speed.
STARTING AND OPERATING 341
5
Page 408 of 466
Cavity Car-
tridge
FuseMini
FuseDescription
8 Ð 15 Amp
BlueDiagnostic Link Connec-
tor (DLC)/Wireless Con-
trol Module (WCM)/
Wireless Ignition Node
(WIN)
9 Ð 20 Amp
YellowPower Outlet
10ÐÐÐ
11*ÐÐÐ
12*ÐÐÐ
13*ÐÐÐ
14 Ð 10 Amp
RedAC Heater Control/
Cluster/Security Mod-
ule - if equipped
15 Ð 20 Amp
YellowTrailer Tow Brake Mod-
ule - if equippedCavity Car-
tridge
FuseMini
FuseDescription
16ÐÐÐ
17 Ð 20 Amp
YellowCluster
18 Ð 20 Amp
YellowSelectable Power Outlet
19 Ð 10 Amp
RedStop Lights
20ÐÐÐ
21ÐÐÐ
22ÐÐÐ
23ÐÐÐ
24ÐÐÐ
25ÐÐÐ
26ÐÐÐ
408 MAINTAINING YOUR VEHICLE
Page 430 of 466

Perform Maintenance Every(Where time and mileage
are listed, follow the interval that occurs first.)
Maintenance Items Miles Kilometers or Months
Replace the engine air cleaner filter. 30,000 50 000 30
Inspect the transfer case fluid Ð All Wheel Drive
(AWD).30,000 50 000 30
Replace the spark plugs on 5.7L engines.30,000 50 000 30
Change the rear axle fluid if using your vehicle for
any of the following: police, taxi, fleet, off-road, or fre-
quent trailer towing.48,000 80 000 48
Change the automatic transmission fluid & filter if
using your vehicle for any of the following: police,
taxi, fleet, or frequent trailer towing.60,000 100 000 60
Change the transfer case fluid if using your vehicle for
any of the following: police, taxi, fleet, off-road, or fre-
quent trailer towing Ð All Wheel Drive (AWD).60,000 100 000 60
Inspect and replace the PCV valve if necessary.90,000 150 000 90
Flush and replace the engine coolant. 102,000 170 000 60
430 MAINTENANCE SCHEDULES
8
M
A
I
N
T
E
N
A
N
C
E
S
C
H
E
D
U
L
E
S
Page 453 of 466

Heated Seats........................... 118
Heater............................... 239
Heater, Engine Block..................... 258
High Beam/Low Beam Select (Dimmer) Switch . . 127
Hitches
Trailer Towing........................ 333
Holder, Coin........................... 153
Holder, Cup........................... 151
HomeLinkt(Garage Door Opener) Transmitter . . . 139
Hood Release.......................... 121
Hoses................................ 393
Ignition............................... 14
Key ...............................12,14
Ignition Key Removal..................... 14
Illuminated Entry........................ 20
Immobilizer (Sentry Key)................... 15
Indicator, Traction Control................. 284
Infant Restraint........................65,66Inflation Pressure Tires.................... 172
Information Center, Vehicle................. 175
Inside Rearview Mirror.................... 83
Instrument Cluster.................162,163,164
Instrument Panel and Controls.............. 161
Instrument Panel Lens Cleaning............. 402
Interior Appearance Care.................. 401
Interior Fuses.......................... 404
Interior Lights.......................... 128
Intermittent Wipers (Delay Wipers)........... 130
Introduction............................. 4
Jack Location........................... 348
Jack Operation.......................... 350
Jacking Instructions...................... 350
Jump Starting.......................... 356
Key, Programming........................ 17
Key, Replacement........................ 16
INDEX 453
10
Page 462 of 466

Storage, Vehicle......................248,411
Storing Your Vehicle...................... 411
Stuck, Freeing.......................... 359
Sun Roof.............................. 146
Sunglasses Storage....................... 139
Sunroof Maintenance..................... 148
Supplemental Restraint System - Airbag........ 50
Sway Control, Trailer..................... 330
Synthetic Engine Oil...................... 377
System, Navigation...................... 209
System, Remote Starting.................... 26
Tachometer............................ 164
Telescoping Steering Column............... 133
Temperature Control, Automatic (ATC)........ 242
Temperature Gauge, Engine Coolant.......165,345
Tether Anchor, Child Restraint............... 68
Theft Alarm (Security Alarm)................ 18
Theft System (Security Alarm)............... 18Tilt Steering Column..................... 133
Time Delay, Headlight.................... 125
Tip Start............................... 14
Tire and Loading Information Placard......... 294
Tire Identification Number (TIN)............. 293
Tire Markings.......................... 290
Tire Safety Information.................... 290
Tires ............................78,298,440
Aging (Life of Tires).................... 304
Air Pressure.......................... 298
Alignment........................... 306
Chains.............................. 307
Changing.........................346,350
Compact Spare........................ 302
Flat Changing........................ 346
General Information.................... 298
High Speed.......................... 301
Inflation Pressures..................... 299
Jacking...........................347,350
462 INDEX