GMC 1998 Yukon - Trailer Brakes; Driving with a Trailer

Trailer Brakes Driving with a Trailer
If your trailer weighs more than 1,000 lbs. (450 kg)
loaded, then it needs its own brakes -- and they must be
adequate. Be s~re 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 the vehicle‘s
hydraulic brake system only if:
The trailer parts can withstand 3,000 psi
(20 650 kPa) of pressure.
The trailer’s brake system will use less than
0.02 cubic inch (0.3 cc) of fluid from your vehicle’s
master cylinder. Otherwise, both braking systems
won’t work well. You could even lose
YOLK brakes.
If everything checks out this far, make the brake tap at
the port on the master cylinder that sends the 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.
If you have
a rear-most window open and you
pull
a trailer with your vehicle, carbon monoxide
(CO) could come into your vehicle. You can’t see
or smell
CO. It can cause unconsciousness or
death. (See “Engine Exhaust” in the Index.)
To
maximize your safety when towing a trailer:
Have your exhaust system inspected for
leaks, and make necessary repairs before
starting on your trip.
0 Keep the rear-most windows closed.
0 If exhaust does come into your vehicle
through a window in the rear or another
opening, drive with your front, main
heating or cooling system on and with the
fan on any speed. This will bring fresh,
outside air into your vehicle.
Do not use the
recirculation button or
MAX because it
only recirculates the air inside your vehicle.
(See “Comfort Controls” in the Index.)
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