GMC 2016 Sierra Owner's Manual page 341

340 Driving and Operating
Vehicle Series
1500
1500
2500/3500
1. Front of Vehicle
2. Body to Ground Distance
Trailer Weight
Up to 3175 kg (7,000 lb)
Over 3175 kg (7,000 lb)
Up to 8165 kg (18,000 lb)
When using a weight-distributing
hitch, measure distance (2) before
coupling the trailer to the hitch ball.
Measure the height again after the
trailer is coupled and adjust the
spring bars so the distance (2) is as
close as possible to halfway
between the two measurements.
Fifth-Wheel and Gooseneck
Trailering
Fifth-wheel and gooseneck trailers
can be used with many pickup
models. These trailers place a
larger percentage of the weight
(kingpin weight) on the tow vehicle
Weight-Distributing Hitch
Usage
Optional
Required
Optional
than conventional trailers. Make
sure this weight does not cause the
vehicle to exceed GAWR or GVWR.
Fifth-wheel or gooseneck kingpin
weight should be 15 to 25% of the
trailer weight up to the maximum
amount specified in the trailering
chart for the vehicle. See Weight of
the Trailer under Trailer
Towing 0 325.
The hitch should be located in the
pickup bed so that its centerline is
over or slightly in front of the rear
axle. Take care that it is not so far
forward that it will contact the back
of the cab in sharp turns. This is
especially important for short box
Hitch Distribution
Refer to trailer
manufacturer s
recommendation
50%
Refer to trailer
manufacturer s
recommendation