Chevrolet 2007 Monte Carlo Owner's Manual page 286

You can ask your dealer for our trailering
information or advice, or you can write us at:
Chevrolet Customer Assistance Center
P.O. Box 33170
Detroit, MI 48232-5170
In Canada, write to:
General Motors of Canada Limited
Customer Communication Centre, 163-005
1908 Colonel Sam Drive
Oshawa, Ontario L1H 8P7
Weight of the Trailer Tongue
The tongue load (A) of any trailer is an important
weight to measure because it affects the total
or gross weight of your vehicle. The Gross Vehicle
Weight (GVW) includes the curb weight of the
vehicle, any cargo you may carry in it, and
the people who will be riding in the vehicle. And if
you tow a trailer, you must add the tongue load
to the GVW because your vehicle will be carrying
that weight, too. See Loading Your Vehicle on
page 277 for more information about your vehicle's
maximum load capacity.
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If you're using a weigh-carrying hitch or a
weight-distributing hitch, the trailer tongue (A)
should weigh 10 to 15 percent of the total loaded
trailer weight (B).
After you've loaded your trailer, weigh the trailer
and then the tongue, separately, to see if the
weights are proper. If they aren't, you may be able
to get them right simply by moving some items
around in the trailer.