Page 612 of 806
Towing Tips
Before setting out on a trip, practice turning, stopping
and backing the trailer up in an area away from heavy
traffic.
Automatic Transmission
The “DRIVE” range can be selected when towing. The
transmission controls include a drive strategy to avoid
frequent shifting when towing. However, if frequent
shifting does occur while in DRIVE, select “TOW/
HAUL” mode or select a lower gear range (using the
Electronic Range Select (ERS) switches).
NOTE:Using “TOW/HAUL” mode or selecting a lower
gear range (using the ERS switches) while operating the
vehicle under heavy loading conditions will improve
performance and extend transmission life by reducing
excessive shifting and heat build up. This action will also
provide better engine braking.
Seven-Pin Connector
1 — Battery 5 — Ground
2 — Backup Lamps 6 — Left Stop/Turn
3 — Right Stop/Turn 7 — Running Lamps
4 — Electric Brakes 610 STARTING AND OPERATING
Page 719 of 806

Brake System
In order to assure brake system performance, all brake
system components should be inspected periodically.
Refer to the “Maintenance Schedule” for the proper
maintenance intervals.
WARNING!
Riding the brakes can lead to brake failure and
possibly a collision. Driving with your foot resting or
riding on the brake pedal can result in abnormally
high brake temperatures, excessive lining wear, and
possible brake damage. You would not have your full
braking capacity in an emergency.
Brake Fluid Level Check
The fluid level of the master cylinder should be checked
when performing under the hood service or immediately
if the brake system warning lamp indicates system
failure.
The brake master cylinder has a translucent plastic
reservoir. On the outboard side of the reservoir, there is a
“MAX” dot and an “MIN” dot. The fluid level must be
kept within these two dots. Do not add fluid above the
MAX mark because leakage may occur at the cap.
With disc brakes the fluid level can be expected to fall as
the brake linings wear. However, an unexpected drop in
fluid level may be caused by a leak and a system check
should be conducted.
Use only the manufacturer’s recommended brake fluid.
Refer to “Fluids, Lubricants, and Genuine Parts” in
“Maintaining Your Vehicle” for further information.
7
MAINTAINING YOUR VEHICLE 717
Page 737 of 806
CavityCartridge Fuse Micro Fuse Description
F06 40 Amp Green Antilock Brakes/Electronic Stability Con-
trol Pump
F07 40 Amp Green Starter Solenoid
F08 20 Amp Yellow Emissions Diesel – If Equipped
F09 40 Amp Green
(Cummins Diesel)
30 Amp Pink (1500 LD Diesel) Diesel Fuel Heater – If Equipped
F10 40 Amp Green Body Controller / Exterior Lighting #2
F10 50 Amp Red Body Controller / Exterior Lighting #2 – If
Equipped with Stop/Start
F11 30 Amp Pink Integrated Trailer Brake Module – If
Equipped
F12 40 Amp Green Body Controller #3 / Interior Lights
F13 40 Amp Green Blower Motor
F14 40 Amp Green Body Controller #4 / Power Locks
7
MAINTAINING YOUR VEHICLE 735
Page 738 of 806
CavityCartridge Fuse Micro Fuse Description
F15 30 Amp Pink Electric Park Brake Right Side – If
Equipped
F19 30 Amp Pink SCR – If Equipped
F20 30 Amp Pink Passenger Door Module
F21 30 Amp Pink Drive Train Control Module
F22 20 Amp Yellow Engine Control Module
F23 30 Amp Pink Body Controller #1
F24 30 Amp Pink Driver Door Module
F25 30 Amp Pink Front Wiper Low Speed
F25 30 Amp Pink Front Wiper High Speed
F26 30 Amp Pink Antilock Brakes/Stability Control
Module/Valves
F28 20 Amp Yellow Trailer Tow Backup Lights – If Equipped
F29 20 Amp Yellow Trailer Tow Parking Lights – If Equipped
F30 30 Amp Pink Trailer Tow Receptacle
736 MAINTAINING YOUR VEHICLE
Page 742 of 806
CavityCartridge Fuse Micro Fuse Description
F69 15 Amp Blue Mod SCR 12V (Cummins Diesel) – If
Equipped
F70 30 Amp GreenFuel Pump Motor
F71 25 Amp NaturalAmplifier
F72 10 Amp Red Voltage Stabilizer Modules – If Equipped
F74 20 Amp Yellow
(Gas Engine & 1500 LD Diesel) / 10
Amp Red (Cum-
mins Diesel Engine) Brake Vacuum Pump Gas/Diesel – If
Equipped
F75 10 Amp Red Coolant Temperature Valve Actuator
F76 10 Amp Red Antilock Brakes/Electronic Stability Con-
trol
F77 10 Amp Red Drivetrain Control Module/Front Axle
Disconnect Module
740 MAINTAINING YOUR VEHICLE