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NOTE: This module has been designed and verified for
electric trailer brakes. To determine the type of brakes on
your trailer, check with your trailer manufacturer or
dealer. The user interface consists of the following:
GAIN/ Brake Output Power Display
Shows the current GAIN setting.
This display may also be used to display diagnostic
information, if needed.
• SC — Short Circuit to Ground
• Sb — Short to Battery
• CF — Controller Fault – If this message appears on the
display, see your authorized dealer.
When the vehicle brakes are applied, the display will no
longer show GAIN and will change to the output to the
trailer brakes.
Manual Brake Control Lever
Slide the manual brake control lever to the right to
activate power to the trailer’s electric brakes independent
of the tow vehicle’s brakes. If the manual brake control1 — GAIN/Brake Output Power Display
2 — Manual Brake Control Lever
3 — Trailer Brake Status Indicator Light
4 — GAIN Adjustment Buttons
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lever is activated while the brake is also applied, the
greater of the two inputs determines the power sent to
the trailer brakes.
The trailer and the vehicle’s brake lamps will come on
when either vehicle braking or manual trailer brakes are
applied.
Trailer Brake Status Indicator Light
This light indicates the trailer electrical connection status.
If no electrical connection is detected after the ignition is
turned on, pressing the GAIN adjustment button or
sliding the manual brake control lever will display the
GAIN setting for 10 seconds and the “Trailer Brake Status
Indicator Light” will not be displayed.
If a fault is detected in the trailer wiring or the Integrated
Trailer Brake Module (ITBM), the “Trailer Brake Status
Indicator Light” will flash. GAIN Adjustment Buttons (+/-)
Pressing these buttons will adjust the brake control
power output to the trailer brakes in 0.5 increments. The
GAIN setting can be increased to a maximum of 10 or
decreased to a minimum of 0 (no trailer braking).
GAIN
The GAIN setting is used to set the trailer brake control
for the specific towing condition and should be changed
as towing conditions change. Changes to towing condi-
tions include trailer load, vehicle load, road conditions
and weather.
Adjusting GAIN
NOTE: This should only be performed in a traffic free
environment at speeds of approximately 20–25 mph
(30–40 km/h).336 STARTING AND OPERATING
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1. Make sure the trailer brakes are in good working
condition, functioning normally, and properly adjusted.
See your trailer dealer if necessary.
2. Hook up the trailer and make the electrical connec-
tions according to the trailer manufacturer’s instructions.
3. When a trailer with electric brakes is plugged in, the
GAIN setting will illuminate.
4. Use the GAIN adjustment (+/-) buttons to increase or
decrease the GAIN setting to the desired starting point. A
GAIN setting of 6 is a good starting point for heavier
loads.
5. In a traffic-free environment, tow the trailer on a dry,
level surface at a speed of 20–25 mph (30–40 km/h) and
squeeze the manual brake control lever completely. 6. If the trailer wheels lockup (indicated by squealing
tires), reduce the GAIN setting; if the trailer wheels turn
freely, increase the GAIN setting.
Repeat Steps 5 and 6 until the GAIN setting is at a point
just below trailer wheel lockup. If towing a heavier
trailer, trailer wheel lockup may not be attainable even
with the maximum GAIN setting of 10.
EVIC Display Messages
The trailer brake control interacts with the Electronic
Vehicle Information Center (EVIC). Display messages,
along with a single chime, will be displayed when a
malfunction is determined in the trailer connection,
trailer brake control, or on the trailer. Refer to “Electronic
Vehicle Information Center (EVIC)” in “Understanding
Your Instrument Panel” for further information.
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CAUTION!The ITBM module has been designed and verified
for electric trailer brakes. Connecting a trailer that is
not compatible with the ITBM system may result in
reduced or complete loss of trailer braking. There
may be a increase in stopping distance or trailer
instability which could result in damage to your
vehicle, trailer, or other property.
WARNING!The ITBM module has been designed and verified
for electric trailer brakes. Connecting a trailer that is
not compatible with the ITBM system may result in
reduced or complete loss of trailer braking. There
may be a increase in stopping distance or trailer
instability which could result in personal injury. NOTE:
• An aftermarket controller may be available for use
with trailers with air or electric-over-hydraulic trailer
brake systems. To determine the type of brakes on
your trailer and the availability of controllers, check
with your trailer manufacturer or dealer.
• Removal of the ITBM will cause errors and it may
cause damage to the electrical system and electronic
modules of the vehicle. See your authorized dealer if
an aftermarket module is to be installed.
Towing Requirements – Trailer Lights and Wiring
Whenever you pull a trailer, regardless of the trailer size,
stop lights and turn signals on the trailer are required for
motoring safety.
NOTE: Do not cut or splice wiring into the vehicle’s
wiring harness.338 STARTING AND OPERATING
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WARNING!Any work done to the vehicle’s electrical system or
wiring should be performed by a qualified automo-
tive technician. If done improperly it may cause
damage to the electrical system wiring and could
result in serious or fatal injury.
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. How-
ever, if frequent shifting occurs while in this range, select
“TOW/HAUL” mode (if equipped) or select a lower gear
using the Electronic Range Select (ERS) feature. NOTE: Using “TOW/HAUL” mode or a lower gear
range while operating the vehicle under heavy operating
conditions will improve performance and extend trans-
mission life by reducing excessive shifting and heat build
up. This action will also provide better engine braking.
The automatic transmission fluid and filter should be
changed if you regularly tow a trailer for more than
45 minutes of continuous operation. Refer to “Mainte-
nance Schedule” for the proper maintenance intervals.
NOTE: Check the automatic transmission fluid level
before towing.
Tow/Haul
To reduce potential for automatic transmission overheat-
ing, turn the “TOW/HAUL” feature ON when driving in
hilly areas, or select a lower gear range (using the
Electronic Range Select (ERS) feature) on more severe
grades.
5 STARTING AND OPERATING 339
Page 345 of 472
RECREATIONAL TOWING (BEHIND MOTORHOME, ETC.)
Towing This Vehicle Behind Another Vehicle
Towing Condition Wheels OFF the
Ground Two-Wheel Drive
Models Four-Wheel Drive Models
Flat Tow NONE NOT ALLOWED See Instructions
• Automatic transmission in PARK
• Manual transmission in gear
(NOT in NEUTRAL (N)
• Transfer case in NEUTRAL (N)
• Tow in forward direction
Dolly Tow Front NOT ALLOWED NOT ALLOWED
Rear OK NOT ALLOWED
On Trailer ALL OK OK344 STARTING AND OPERATING
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Recreational Towing – Two-Wheel Drive Models
DO NOT flat tow this vehicle. Damage to the drivetrain
will result.
Recreational towing (for two-wheel drive models) is
allowed ONLY if the rear wheels are OFF the ground.
This may be accomplished using a tow dolly or vehicle
trailer. If using a tow dolly, follow this procedure:
1. Properly secure the dolly to the tow vehicle, following
the dolly manufacturer’s instructions.
2. Drive the rear wheels onto the tow dolly.
3. Firmly set the parking brake. Place automatic transmis-
sion in PARK, manual transmission in gear (not in Neutral).
4. Properly secure the rear wheels to the dolly, following
the dolly manufacturer’s instructions.
5. Remove the key fob from the ignition switch.
6. Install a suitable clamping device, designed for tow-
ing, to secure the front wheels in the straight position. CAUTION!• Towing with the rear wheels on the ground will
cause severe transmission damage. Damage from
improper towing is not covered under the New
Vehicle Limited Warranty.
• Do not disconnect the driveshaft because fluid
will leak from the transmission, causing damage
to internal parts.
Recreational Towing – Four-Wheel Drive Models
NOTE: Both the manual shift and electronic shift trans-
fer cases must be shifted into NEUTRAL for recreational
towing. Automatic transmissions must be shifted into
PARK for recreational towing. Manual transmissions
must be placed in gear (NOT in NEUTRAL) for recre-
ational towing. Refer to the following for the proper
transfer case NEUTRAL shifting procedure for your
vehicle. 5 STARTING AND OPERATING 345
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CAUTION!• Front or rear wheel lifts should not be used.
Internal damage to the transmission or transfer
case will occur if a front or rear wheel lift is used
when recreational towing.
• Tow only in the forward direction. Towing this
vehicle backwards can cause severe damage to the
transfer case.
• Automatic transmissions must be placed in the
PARK position for recreational towing.
• Manual transmissions must be placed in gear (not
in Neutral) for recreational towing.
• Before recreational towing, perform the procedure
outlined under “Shifting Into NEUTRAL” to be
certain that the transfer case is fully in NEUTRAL.
Otherwise, internal damage will result.
(Continued) CAUTION! (Continued)• Towing this vehicle in violation of the above
requirements can cause severe transmission and/or
transfer case damage. Damage from improper tow-
ing is not covered under the New Vehicle Limited
Warranty.
• Do not disconnect the rear driveshaft because
fluid will leak from the transfer case, causing
damage to internal parts.
• Do not use a bumper-mounted clamp-on tow bar
on your vehicle. The bumper face bar will be
damaged.
Shifting Into Neutral (N) – Manual Shift Transfer
Case (If Equipped)
Use the following procedure to prepare your vehicle for
recreational towing.346 STARTING AND OPERATING