GMC Sierra 2014 Owner's Manual page 353

Vehicle Series
1500
1500
2500/3500
1. Body to Ground Distance
2. Front of Vehicle
Weight Distributing Hitch
Trailer Weight
Up to 7,000 lb
Over 7,000 lb
Up to 18,000 lb
When using a weight-distributing
hitch, measure distance (1) 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 (1) is
as close as possible to halfway
between the two measurements.
Driving and Operating
Usage
Optional
Required
Optional
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
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 percent of
the trailer weight up to the maximum
amount specified in the trailering
9-89
Hitch Distribution
Refer to trailer
manufacturer s
recommendation
50%
Refer to trailer
manufacturer s
recommendation