Chevrolet 2008 Uplander Spezifikationen PDF herunterladen (Seite 286)

Control of a Vehicle

The following three systems help to control your vehicle

while driving — brakes, steering, and accelerator. At

times, as when driving on snow or ice, it is easy to ask

more of those control systems than the tires and

road can provide. Meaning, you can lose control of your

vehicle. See Traction Control System (TCS) on

page 4-6 and StabiliTrak

System on page 4-7.

Adding non-dealer/non-retailer accessories can affect

your vehicle’s performance. See Accessories and

Modiﬁcations on page 5-3.

Braking

See Brake System Warning Light on page 3-41.

Braking action involves perception time and reaction

time. First, you have to decide to push on the brake

pedal. That is perception time. Then you have to bring

up your foot and do it. That is reaction time.

Average reaction time is about three-fourths of a

second. But that is only an average. It might be less

with one driver and as long as two or three seconds or

more with another. Age, physical condition, alertness,

coordination, and eyesight all play a part. So do alcohol,

drugs, and frustration. But even in three-fourths of a

second, a vehicle moving at 60 mph (100 km/h) travels

66 feet (20 m). That could be a lot of distance in an

emergency, so keeping enough space between

your vehicle and others is important.

And, of course, actual stopping distances vary greatly

with the surface of the road, whether it is pavement or

gravel; the condition of the road, whether it is wet, dry, or

icy; tire tread; the condition of the brakes; the weight of

the vehicle; and the amount of brake force applied.

Avoid needless heavy braking. Some people drive in

spurts — heavy acceleration followed by heavy

braking — rather than keeping pace with traffic. This is a

mistake. The brakes might not have time to cool between

hard stops. The brakes will wear out much faster if you do

a lot of heavy braking. If you keep pace with the traffic

and allow realistic following distances, you will eliminate a

lot of unnecessary braking. That means better braking

and longer brake life.

If your vehicle’s engine ever stops while you are driving,

brake normally but do not pump the brakes. If you do, the

pedal could get harder to push down. If the engine stops,

you will still have some power brake assist. But you will

use it when you brake. Once the power assist is used up,

it can take longer to stop and the brake pedal will be

harder to push.

Adding non-dealer/non-retailer accessories can affect

your vehicle’s performance. See Accessories and

Modiﬁcations on page 5-3.

4-4

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