Oldsmobile 2000 Silhouette Owner's Manual page 279

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If you're using a weight carrying hitch, the trailer
tongue (A) should weigh 10 percent of the total loaded
trailer weight (B). If you're using a weight
hitch, the trailer tongue (A) should weigh 12 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.
4-34
Total Weight on Your Vehicle's Tires
Be sure your vehicle's tires are inflated to the upper
limit for cold tires. You'll find these numbers on the
Certification/Tire Label at the rear edge of the driver's
door, or see "Tire Loading" in the Index. Then be sure
you don't go over the GVW limit for your vehicle,
including the weight of the trailer tongue.
Hitches
It's important to have the correct hitch equipment.
Crosswinds, large trucks going by and rough roads are a
few reasons why you'll need the right hitch. Here are
some rules to follow:
D
The bumpers on your vehicle are not intended for
hitches. Do not attach rental hitches or other
bumper
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distributing
frame
the bumper.
D
If you'll be pulling a trailer that, when loaded, will
weigh more than 2,000 lbs. (900 kg), be sure to use a
properly mounted, weight
control of the proper size. This equipment is very
important for proper vehicle loading and good
handling when you're driving.
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type hitches to them. Use only a
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mounted hitch that does not attach to
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carrying hitch and sway