GCWR (Gross Combined Weight Rating)/Trailer Weights
EngineRear
axle
ratioMaximum
GCWR -
lbs. (kg)Maximum
Loaded
Trailer Weight
- lbs. (kg)Maximum
frontal area of
trailer - ft
2
(m2)
E-350 Stripped Chassis (138”wheelbase) (9600 GVWR)
5.4L 3.55/4.1013000
(5897)8800 (3992) 60 (5.52)
6.8L 4.1018500
(8391)10000 (4536) 60 (5.52)
E-350 Stripped Chassis (158”wheelbase) (9600 GVWR)
5.4L 3.55/4.1013000
(5897)8700 (3946) 60 (5.52)
6.8L 4.1018500
(8391)10000 (4536) 60 (5.52)
E-350 Stripped Chassis (138”wheelbase) (10000 GVWR)
5.4L 4.1013000
(5897)8500 (3856) 60 (5.52)
6.8L 4.1018500
(8391)10000 (4536) 60 (5.52)
E-350 Stripped Chassis (158”wheelbase) (10000 GVWR)
5.4L 4.1013000
(5897)8400 (3810) 60 (5.52)
6.8L 4.1018500
(8391)10000 (4536) 60 (5.52)
E-350 Chassis Cab (158”wheelbase) (11000 GVWR)
5.4L 4.1013000
(5897)8400 (3810) 60 (5.52)
6.8L 4.1018500
(8391)10000 (4536) 60 (5.52)
E-350 Stripped Chassis (176”wheelbase) (10000 GVWR)
5.4L 4.1013000
(5897)8400 (3810) 60 (5.52)
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GCWR (Gross Combined Weight Rating)/Trailer Weights
EngineRear
axle
ratioMaximum
GCWR -
lbs. (kg)Maximum
Loaded
Trailer Weight
- lbs. (kg)Maximum
frontal area of
trailer - ft
2
(m2)
6.8L 4.1018500
(8391)10000 (4536) 60 (5.52)
E-350 Stripped Chassis (176”wheelbase) (11000 GVWR)
5.4L 4.1013000
(5897)8400 (3810) 60 (5.52)
6.8L 4.1018500
(8391)10000 (4536) 60 (5.52)
E-450 Cutaway and Chassis Cab (all wheelbases, all GVWRs)
6.8L 4.5620000
(9072)10000 (4536) 60 (5.52)
E-450 Stripped Chassis (all wheelbases, all GVWRs)
5.4L 4.5613000
(5897)8200 (3719) 60 (5.52)
6.8L 4.5618500
(8391)10000 (4536) 60 (5.52)
Maximum trailer weight for all cutaway (E-350 and E-450) vehicles
must be calculated by subtracting the weight of the vehicle (including
incomplete vehicle weight and payload which includes second unit
body weight, cargo and passengers) from the GCW. Otherwise,
maximum trailer weight is 10,000 lbs. (4536 kg).
For high altitude operation reduce GCWR by 2% per 1,000 ft. (300
meters) elevation.
To determine the maximum trailer weight designed for your particular
vehicle as equipped, follow the sectionCalculating the load your
vehicle can tow/carryearlier in this chapter.
Your vehicle’s load capacity is designated by weight, not by volume, so
you cannot necessarily use all available space when loading a vehicle.
Distribute the load so that only 10–15% of the total is on the tongue. Tie
down the load so that it does not shift and change the weight on the
hitch.
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Towing a trailer places an additional load on your vehicle’s engine,
transmission, axle, brakes, tires and suspension. Inspect these
components carefully after any towing operation.
Note:Do not exceed the GVWR or the GAWR specified on the
certification label.
Towing trailers beyond the maximum recommended gross trailer
weight exceeds the limit of the vehicle and could result in
engine damage, transmission damage, structural damage, loss of vehicle
control, vehicle rollover and personal injury.
Preparing to tow
Use the proper equipment for towing a trailer and make sure it is
properly attached to your vehicle. See your dealer or a reliable trailer
dealer if you require assistance.
Hitches
Do not use or install hitches that clamp onto the bumper or to the axle.
Underbody hitches are acceptable if installed properly.
Safety chains
Always connect the trailer’s safety chains to the frame or hook retainers
of the vehicle hitch. To connect the trailer’s safety chains, cross the
chains under the trailer tongue and allow slack for turning corners.
If you use a rental trailer, follow the instructions that the rental agency
gives to you.
Do not attach safety chains to the bumper.
Trailer brakes
Electric brakes and manual, automatic or surge-type trailer brakes are
safe if installed properly and adjusted to the manufacturer’s
specifications. The trailer brakes must meet local and Federal
regulations.
Do not connect a trailer’s hydraulic brake system directly to your
vehicle’s brake system. Your vehicle may not have enough
braking power and your chances of having a collision greatly increase.
The braking system of the tow vehicle is rated for operation at the
GVWR not GCWR.
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Trailer lamps
Trailer lamps are required on most towed vehicles. Make sure all running
lights, brake lights, turn signals and hazard lights are working. See your
dealer or trailer rental agency for proper instructions and equipment for
hooking up trailer lamps.
Using a step bumper (if equipped)
The rear bumper is equipped with an integral hitch and only requires a
ball with a one inch (25.4 mm) shank diameter. The bumper has a 5,000
lbs. (2,270 kg) trailer weight and 500 lbs. (227 kg) tongue weight
capacity.
If it is necessary to relocate the trailer hitch ball position, a
frame-mounted trailer hitch must be installed.
Driving while you tow
When towing a trailer:
•Turn off the speed control. The speed control may shut off
automatically when you are towing on long, steep grades.
•Do not exceed 50 mph (80 km/h) for the first 500 miles (800 km) of
towing and do not perform and fast accelerations from a stop during
this time.
•Consult your local motor vehicle speed regulations for towing a trailer.
•To eliminate excessive shifting, use a lower gear. This will also assist
in transmission cooling.
•Anticipate stops and brake gradually.
When descending long, steep downhill grades, always use a lower gear to
provide engine braking to save wear on brakes. Use Drive (Overdrive
OFF) on moderately steep hills, Second (2) on steep hills, and First (1)
on very steep hills.Do not apply your brakes continuously, as they
may overheat and become less effective.
Servicing after towing
If you tow a trailer for long distances, your vehicle will require more
frequent service intervals. Refer to yourScheduled Maintenance Guide
for more information.
Trailer towing tips
•Practice turning, stopping and backing up before starting on a trip to
get the feel of the vehicle trailer combination. When turning, make
wider turns so the trailer wheels will clear curbs and other obstacles.
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•Allow more distance for stopping with a trailer attached.
•The trailer tongue weight should be 10–15% of the loaded trailer
weight.
•If you will be towing a trailer frequently in hot weather, hilly
conditions, at GCW, or any combination of these factors, consider
refilling your rear axle with synthetic gear lube. Refer to the
Maintenance and specificationschapter for the lubricant
specification.
•Do not tow a trailer for the first 500 miles (800 km) after changing
the rear axle lube
•Do not exceed 50 mph (80 km/h) for the first 500 miles (800 km) of
towing and do not perform and fast accelerations from a stop during
this time.
•After you have traveled 50 miles (80 km), thoroughly check your
hitch, electrical connections and trailer wheel lug nuts.
•When stopped in traffic for long periods of time in hot weather, place
the gearshift in P (Park) and increase idle speed. This aids engine
cooling and air conditioner efficiency.
•Vehicles with trailers should not be parked on a grade. If you must
park on a grade, place wheel chocks under the trailer’s wheels.
Launching or retrieving a boat
Disconnect the wiring to the trailer before backing the trailer
into the water. Reconnect the wiring to the trailer after the
trailer is removed from the water.
When backing down a ramp during boat launching or retrieval:
•do not allow the static water level to rise above the bottom edge of
the rear bumper.
•do not allow waves to break higher than 6 inches (15 cm) above the
bottom edge of the rear bumper.
Exceeding these limits may allow water to enter vehicle components:
•causing internal damage to the components.
•affecting driveability, emissions and reliability.
Replace the rear axle lubricant any time the axle has been submerged in
water. Rear axle lubricant quantities are not to be checked or changed
unless a leak is suspected or repair required.
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Fuse/Relay
LocationFuse Amp
RatingPassenger Compartment Fuse
Panel Description
5 30A Power lock switches, Power locks
without RKE
6 10A Brake-shift interlock, Speed
control (gasoline engine only)
7 10A Multi-function switch, Turn signals
8 30A Radio capacitor(s), Ignition coil,
Powertrain Control Module (PCM)
diode, PCM power relay, Auxiliary
PCM (APCM) (Diesel engine
only)
9 30A Wiper control module, Windshield
wiper motor
10 20A Main light switch, Park lamps,
License lamp (external lamps),
Multi-function switch
(flash-to-pass)
11 15A Multi-function switch (hazards),
Brake lamp switch, Brake lamps
12 15A Back-up lamps, Auxiliary battery
relay (gasoline engine only),
Trailer tow relay
13 15A Blend door actuator, A/C heater,
Function selector switch
14 5A Instrument cluster
15 5A Trailer battery charge relay,
Cluster, Daytime Running Lamps
(DRL) module
16 30A Power seats
17 5A Power mirrors
18—Not used
19—Not used
20 10A Restraints
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Fuse/Relay
LocationFuse Amp
RatingPassenger Compartment Fuse
Panel Description
21—Not used
22 15A Memory power radio, Rear seat
video control unit, Battery saver
relay, Instrument cluster, Courtesy
lamp relay, Accessory delay relay
23 20A Power locks w/RKE
24—Not used
25 10A Left headlamp (low beam)
26 20A Cigar lighter, Diagnostics
27 5A Radio
28—Not used
29 20A Power point #4 (console)
30 15A Headlamps (high beam indicator)
31 10A Right headlamp (low beam)
32 20A Power point #1 (instrument
panel)
33 10A Starter solenoid (gasoline engine
only)/Start relay (diesel engine
only)
34 20A Power point #3 (console)
35 30A Modified vehicle
36 5A (Cluster, A/C, Illumination, Radio)
37—Not used
38—Not used
39 10A Trailer tow electric brake, Center
High-Mounted Stop Lamp
(CHMSL), Brake lamps
40 20A Power point #2 (2nd row seating
position - driver side)
41 30A Modified vehicle
42—Not used
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Fuse/Relay
LocationFuse Amp
RatingPower Distribution Box
Description
1—Powertrain Control Module (PCM)
diode
2—Alternative Fuel Control Module
(AFCM) diode (Natural gas
vehicle only)
3 10A* Daytime Running Lamps (DRL)
module, A/C clutch
4 20A* Natural Gas Vehicle (NGV) tank
solenoids (natural gas vehicle
only)
5 15A* Horn relay
6 2A* Brake pressure switch
7 60A** Ignition switch, Fuse panel,
Accessory delay
8 40A** Trailer battery charge relay
9 50A** Modified vehicle power
10 30A** Electric brake controller
11 60A** 4-Wheel Anti-lock Brake System
(4WABS)
12 60A** I/P fuses 29, 34, 35, 40 and 41
13 20A** Fuel pump relay
14 50A** Auxiliary blower relay
15 30A** Main light switch
16—Not used
17 50A** Blower motor relay (blower
motor)
18 60A** Engine compartment fuses 3, 5,
23 and 26, Instrument panel fuses
26 and 32, Diesel start relay
(Diesel engine only)
19 50A** IDM relay (Diesel engine only)
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