Chevrolet 2009 Silverado 1500 Pickup Spezifikationen PDF herunterladen (Seite 395)

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101

Tow/Haul is designed to be most effective when the

vehicle and trailer combined weight is at least 75 percent

of the vehicle’s Gross Combined Weight Rating (GCWR).

See “Weight of the Trailer” later in the section. Tow/Haul

is most useful under the following driving conditions:

• When pulling a heavy trailer or a large or heavy load

through rolling terrain.

• When pulling a heavy trailer or a large or heavy load

in stop and go traffic.

• When pulling a heavy trailer or a large or heavy load

in busy parking lots where improved low speed

control of the vehicle is desired.

Operating the vehicle in Tow/Haul when lightly loaded

or with no trailer at all will not cause damage. However,

there is no beneﬁt to the selection of Tow/Haul when

the vehicle is unloaded. Such a selection when unloaded

may result in unpleasant engine and transmission

driving characteristics and reduced fuel economy.

Tow/Haul is recommended only when pulling a heavy

trailer or a large or heavy load.

Trailer Brakes

A loaded trailer that weighs more than 2,000 lbs

(900 kg) needs to have its own brake system that is

adequate for the weight of the trailer. Be sure to read

and follow the instructions for the trailer brakes so

they are installed, adjusted and maintained properly.

If the vehicle is equipped with StabiliTrak

, the

trailer cannot tap into the vehicle’s hydraulic brake

system.

The 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 the vehicle’s

master cylinder. Otherwise, both braking systems

will not work well or at all.

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. Use only steel brake tubing to

make the tap.

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