Chevrolet avalanche 2002 用户手册

If your trailer weighs more than 2,000 lbs. (900 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 the vehicle’s
hydraulic brake system only if:
D The trailer parts can withstand 3,000 psi 

(20 650 kPa) of pressure.

D 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 your 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.

Towing a trailer requires a certain amount of experience.
Before setting out for the open road, you’ll want to get
to know your rig. Acquaint yourself with the feel of
handling and braking with the added weight of the
trailer. And always keep in mind that the vehicle you 
are driving is now a good deal longer and not nearly 
as responsive as your vehicle is by itself.

Before you start, check the trailer hitch and platform
(and attachments), safety chains, electrical connector,
lamps, tires and mirror adjustment. If the trailer has
electric brakes, start your vehicle and trailer moving 
and then apply the trailer brake controller by hand to 
be sure the brakes are working. This lets you check 
your electrical connection at the same time.

During your trip, check occasionally to be sure that the
load is secure, and that the lamps and any trailer brakes
are still working.