4x2
GCWR (Gross Combined Weight Rating)/Trailer Weight
Engine
Rear axle ratio Maximum
GCWR-lbs.
(kg)
Trailer weight
range-lbs. (kg)
(0-Maximum)
4.6L
3.55
12300 (5580)
0–7300 (0–3311)
4.6L
3.73
8500 (3856)
0–3500 (0–1588)
Notes:
For high altitude operation, reduce GCW by 2% per 1,000 ft
(300 meters) elevation. For definitions of terms used in this table and
instructions on how to calculate your vehicle load, refer to
Vehicle
loading
in this chapter. Maximum trailer weights shown. The
combined weight of the completed towing vehicle and the loaded
trailer must not exceed the GCWR.
In ambient temperatures greater than 100°F (38°C), it is recommended
that the maximum GCW be reduced to 11,600 lbs (5,262 kg) for the
3.55 axle or 8,000 lbs (3629 kg) for the 3.73 axle. At these
temperatures, vehicle speed should be kept below 60 mph (97 km/h)
during highway operation. Extended operation above 4,000 rpm should
be avoided.
Towing a trailer over 3,500 lbs (1,588 kg) requires a 3.55 axle and a
weight carrying class III/IV hitch.
Towing a trailer over 5,000 lbs (2,268 kg) requires a 3.55 axle and a
weight carrying class III/IV hitch with aftermarket weight-distributing
equipment.
2004 Aviator f/k/a Navigator LS
(231)
Owners Guide (post-2002-fmt)
USA English
(fus)
Driving
241