Chevrolet Tahoe 2015 Owner's Manual page 333

9-80 Driving and Operating
Weight of the Trailer Tongue
The tongue load (1) of any trailer is
very important because it is also
part of the vehicle weight. The
Gross Vehicle Weight (GVW)
includes the curb weight of the
vehicle, any cargo carried in it,
and the people who will be riding
in the vehicle as well as trailer
tongue weight. Vehicle options,
equipment, passengers, and cargo
in the vehicle reduce the amount of
tongue weight the vehicle can carry,
which will also reduce the trailer
weight the vehicle can tow. See
Vehicle Load Limits on page 9-14
for more information about the
vehicle's maximum load capacity.
Trailer tongue weight (1) should
be 10 % to 15 % of the loaded
trailer weight (2) up to the
maximums for vehicle series and
hitch type.