GMC 2004 safari, Owner'S Manual

Page: 210 / 394

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. Follow the manufacturer’s
recommendation for attaching safety chains and do not
attach them to the bumper. 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 — and they must
be 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.
Your trailer brake system can tap into your vehicle’s
hydraulic brake system, except:
•
Don’t tap into your vehicle’s brake system if the
trailer’s brake system will use more than 0.02 cubic
inch (0.3 cc) of fluid from your vehicle’s master
cylinder. If it does, both braking systems won’t work
well. You could even lose your brakes.
•
Will the trailer parts take 3,000 psi (20 650 kPa) of
pressure? If not, the trailer brake system must not
be used with your vehicle.
•
If everything checks out this far, then make the
brake fluid tap at the port on the master cylinder that
sends fluid to the rear brakes. But don’t use
copper tubing for this. If you do, it will bend and
finally break off. Use steel brake tubing.
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