Safety Chains; Trailer Brakes - GMC 2000 Sonoma Owner's Manual

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
-
If you use a step bumper hitch, your bumper could
be damaged in sharp turns. Make sure you have
ample room when turning to avoid contact between
the trailer and the bumper.
D
If you'll be pulling a trailer that, when loaded, will
weigh more than 3,500 lbs. (1 589 kg), be sure to use
a properly mounted, weight
sway control of the proper size. This equipment is
very important for proper vehicle loading and good
handling when you're driving.
D
If your vehicle has the bumper delete option, do
not bolt any type of hitch to the close
-
The close out panel will not support a hitch.
4-50
-
distributing hitch and
-
out panel.

Safety Chains

You should always attach chains between your vehicle and
your trailer. Cross the safety chains under the tongue of the
trailer to help prevent the tongue from contacting the road
if it becomes separated from the hitch. Instructions about
safety chains may be provided by the hitch manufacturer
or by the trailer manufacturer. For trailers up to 3,500 lbs.
(1 589 kg) you may attach the safety chains to the
attaching points on the bumper. For heavier trailers, follow
the trailer or hitch manufacturer's recommendation for
attaching safety chains. Always leave just enough slack so
you can turn with your rig. Never allow safety chains to
drag on the ground.

Trailer Brakes

If your trailer weighs more than 1,000 lbs. (450 kg)
loaded, then it needs its own brakes
adequate. Be sure to read and follow the instructions for
the trailer brakes so you'll be able to install, adjust and
maintain them properly.
--
and they must be