
404 STARTING AND OPERATING
1. Put the vehicle in park and switch the ignition off.
2. Push the center-rear edge of the fuel filler door (3 o'clockposition) and release to open.
Fuel Filler Door
3. Insert the fuel nozzle fully into the filler pipe, the nozzle opens and holds both flapper doors while refueling. Fuel Filler
4. When the fuel nozzle “clicks” or shuts off, the fuel tank is full.
5. Keep the nozzle in the filler for five seconds after nozzle clicks to allow fuel to drain from the nozzle.
6. Remove the fuel filler nozzle.
7. To close the fuel filler door, push the center-rear edge (3 o’clock position) of the fuel filler door and then release.
The fuel filler door will latch closed.
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414 STARTING AND OPERATING
(Continued)
Perform the maintenance listed in the “Scheduled
Servicing”. Refer to “Scheduled Servicing” in “Servicing
And Maintenance” for the proper maintenance intervals.
When towing a trailer, never exceed the GAWR or GCWR
ratings.• Then, during the first 500 miles (805 km) that a trailer is
towed, do not drive over 50 mph (80 km/h) and do not
make starts at full throttle. This helps the engine and
other parts of the vehicle wear in at the heavier loads.
WARNING!
• Make certain that the load is secured in the trailer and will not shift during travel. When trailering cargo that
is not fully secured, dynamic load shifts can occur that
may be difficult for the driver to control. You could lose
control of your vehicle and have a collision.
• When hauling cargo or towing a trailer, do not overload your vehicle or trailer. Overloading can cause a loss of
control, poor performance or damage to brakes, axle,
engine, transmission, steering, suspension, chassis
structure or tires. CAUTION!
(Continued)
• Safety chains must always be used between your
vehicle and trailer. Always connect the chains to the
hook retainers of the vehicle hitch. Cross the chains
under the trailer tongue and allow enough slack for
turning corners.
• Vehicles with trailers should not be parked on a grade. When parking, apply the parking brake on the tow
vehicle. Put the tow vehicle transmission in PARK. For
four-wheel drive vehicles, make sure the transfer case
is not in NEUTRAL. Always, block or "chock" the
trailer wheels.
• GCWR must not be exceeded.
• Total weight must be distributed between the tow vehicle and the trailer such that the following four
ratings are not exceeded:
• GVWR
• GTW
• GAWR
• Tongue weight rating for the trailer hitch utilized.
WARNING! (Continued)
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STARTING AND OPERATING 417
GAIN Adjustment Buttons (+/-)
Pushing 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 conditions
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).
1. Make sure the trailer brakes are in good working condi-
tion, functioning normally and properly adjusted. See
your trailer dealer if necessary.
2. Hook up the trailer and make the electrical connections according to the trailer manufacturer's instructions.
3. When a trailer with electric/EOH brakes is plugged in, the trailer connected message should appear in the
instrument cluster display (if the connection is not recog -nized by the ITBM, braking functions will not be avail
-
able), the GAIN setting will illuminate and the correct
type of trailer must be selected from the instrument
cluster display options.
4. Push the UP or DOWN button on the steering wheel until “TRAILER TOW” appears on the screen.
5. Push the RIGHT arrow on the steering wheel to enter “TRAILER TOW”.
6. Push the UP or DOWN buttons until the Trailer Brake Type appears on the screen.
7. Push the RIGHT arrow and then push the UP or DOWN buttons until the proper Trailer Brake Type appears on
the screen.
8. 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.
9. 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 8 and 9 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.
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STARTING AND OPERATING 429
Off-Road Driving Tips
Care should be taken when attempting to climb steep hills or
driving diagonally across a hill or slope. If natural obstacles
force you to travel diagonally up or down a hill, choose a
mild angle and keep as little side tilt as possible. Keep the
vehicle moving and make turns slowly and cautiously.
If you must back down a hill, back straight down using
REVERSE gear. Never back down in NEUTRAL or diago-
nally across the hill. When driving over sand, mud, and other soft terrain, shift to
low gear and drive steadily. Apply the accelerator slowly to
avoid spinning the wheels.
Do not reduce the tire pressures for this type of driving.
After Driving Off-Road
Off-road operation puts more stress on your vehicle than
does most on-road driving. After going off-road, it is always
a good idea to check for damage. That way you can get any
problems taken care of right away and have your vehicle
ready when you need it.
• Completely inspect the underbody of your vehicle. Check
tires, body structure, steering, suspension, and exhaust
system for damage.
• Inspect the radiator for mud and debris and clean as required.
• Check threaded fasteners for looseness, particularly on the chassis, drivetrain components, steering, and suspension.
Retighten them, if required, and torque to the values spec -
ified in the Service Manual.
• Check for accumulations of plants or brush. These things could be a fire hazard. They might hide damage to fuel
lines, brake hoses, axle pinion seals, and propeller shafts.
• Driving through standing water may cause damage to
your vehicle’s drivetrain components. Always inspect
your vehicle’s fluids (i.e., engine oil, transmission, axle,
etc.) for signs of contamination (i.e., fluid that is milky
or foamy in appearance) after driving through standing
water. Do not continue to operate the vehicle if any
fluid appears contaminated, as this may result in
further damage. Such damage is not covered by the
New Vehicle Limited Warranty.
• Getting water inside your vehicle’s engine can cause it to lock up and stall out, and cause serious internal
damage to the engine. Such damage is not covered by
the New Vehicle Limited Warranty. CAUTION!
(Continued)
5
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438 IN CASE OF EMERGENCY
Replacing Exterior Bulbs
Base Quad: Low Beam Headlamp, High Beam Headlamp,
Front Park And Turn — If Equipped
Low Beam
1. Open the hood.
2. Disconnect and isolate the negative battery cable.
3. Look under the hood and behind the headlamp to findthe low beam bulb access cover.
Passenger’s Low Beam Headlight Cover NOTE:
It may be necessary to remove/reposition Air Cleaner
Assembly to access passenger side headlamp/side marker
light bulbs.
4. Disengage the bulb access cover by rotating counterclock
-
wise.
5. Disconnect the internal lamp wiring harness connector from the low beam bulb.
6. Rotate the bulb counterclockwise a quarter turn to unlock the bulb from the lamp.
7. Pull the bulb straight out from the housing.
8. Reverse the procedure for installation of new bulb and covers.
CAUTION!
• Do not contaminate the bulb glass by touching it with your fingers or by allowing it to contact other oily
surfaces. Shortened bulb life will result.
• Always use the correct bulb size and type for replace -
ment. An incorrect bulb size or type may overheat and
cause damage to the lamp, the bulb socket, or the lamp
wiring.
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IN CASE OF EMERGENCY 439
High Beam
1. Open the hood.
2. Disconnect and isolate the negative battery cable.
3. Look under the hood and behind the headlamp to findthe high beam bulb access cover.
Driver’s High Beam Headlight Cover
NOTE:
It may be necessary to remove/reposition Air Cleaner
Assembly to access passenger side headlamp/side marker
light bulbs. 4. Reach behind the headlamp and disengage the access
cover by rotating counterclockwise.
5. Disconnect the internal lamp wiring harness connector from the high beam bulb.
6. Rotate the bulb counterclockwise a quarter turn to unlock the bulb from the lamp.
7. Pull the bulb straight out from the housing.
8. Reverse the procedure for installation of new bulb and covers.
CAUTION!
• Do not contaminate the bulb glass by touching it with your fingers or by allowing it to contact other oily
surfaces. Shortened bulb life will result.
• Always use the correct bulb size and type for replace -
ment. An incorrect bulb size or type may overheat and
cause damage to the lamp, the bulb socket, or the lamp
wiring.
6
2020_DT_1500_OM_US.book Page 439

440 IN CASE OF EMERGENCY
Front Park And Turn
1. Open the hood.
2. Disconnect and isolate the negative battery cable.
3. Look under the hood and behind the headlamp to findthe park and turn socket.
Park And Turn Socket
4. Reach behind the headlamp and unlock the park and turn socket from the lamp by rotating counterclockwise a
quarter turn.
5. Pull the bulb straight out from the housing. 6. Separate the bulb from the socket without twisting.
7. Reverse the procedure for installation of new bulb and
covers.
Side Marker Lamp
1. Open the hood.
2. Disconnect and isolate the negative battery cable.
3. Look under the hood and behind the headlamp to find the Side Marker Light.
Passenger’s Side Marker Lamp
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IN CASE OF EMERGENCY 441
NOTE:
It may be necessary to remove/reposition Air Cleaner
Assembly to access passenger side headlamp/side marker
light bulbs.
4. Disengage the side marker socket by rotating counter-clockwise a quarter turn.
5. Pull the socket and bulb straight out from the housing.
6. Separate the bulb from the socket without twisting.
7. Reverse the procedure for installation of new bulb and covers.
Fog Lamps — If Equipped
1. Reach under and behind the front bumper to access the back of the front fog lamp housing.
2. Disconnect the fog lamp wiring harness connector from the fog lamp bulb.
3. Rotate the bulb counterclockwise a quarter turn to unlock the bulb from the housing.
4. Pull the bulb straight out from the housing. Rear Tail/Stop, Turn Signal And Backup Lamps
1. Remove the two screws and push pins retainers that pass
through the bed sheet metal.
Tail Lamp LocationsCAUTION!
Do not contaminate the bulb glass by touching it with
your fingers or by allowing it to contact other oily
surfaces. Shortened bulb life will result.
1 — Tail Lamp
2 — Fasteners
3 — Push - Pin Retainers
6
2020_DT_1500_OM_US.book Page 441