Gmc 2007 Sierra User Manual download pdf (Page 379)

100

101

Scanning the Terrain

Off-road driving can take you over many different

kinds of terrain. You need to be familiar with

the terrain and its many different features.

Here are some things to consider.

Surface Conditions: Off-roading can take you

over hard-packed dirt, gravel, rocks, grass, sand,

mud, snow, or ice. Each of these surfaces

affects the steering, acceleration, and braking of

your vehicle in different ways. Depending upon the

kind of surface you are on, you may experience

slipping, sliding, wheel spinning, delayed

acceleration, poor traction, and longer braking

distances.

Surface Obstacles: Unseen or hidden obstacles

can be hazardous. A rock, log, hole, rut, or

bump can startle you if you are not prepared for

them. Often these obstacles are hidden by

grass, bushes, snow, or even the rise and fall of

the terrain itself. Here are some things to consider:

• Is the path ahead clear?

• Will the surface texture change abruptly

up ahead?

• Does the travel take you uphill or downhill?

There is more discussion of these subjects

later.

• Will you have to stop suddenly or change

direction quickly?

When you drive over obstacles or rough terrain,

keep a ﬁrm grip on the steering wheel. Ruts,

troughs, or other surface features can jerk

the wheel out of your hands if you are not

prepared.

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Gmc 2007 Sierra User Manual Page 379

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