GMC 2006 Sierra - Manual (Page 333)

Controlling your vehicle is the key to successful off-road
driving. One of the best ways to control your vehicle is to
control your speed. Here are some things to keep in
mind. At higher speeds:
• You approach things faster and you have less time to
scan the terrain for obstacles.
• You have less time to react.
• You have more vehicle bounce when you drive over
obstacles.
• You will need more distance for braking, especially
since you are on an unpaved surface.
{ CAUTION:
When you are driving off-road, bouncing and
quick changes in direction can easily throw
you out of position. This could cause you to
lose control and crash. So, whether you are
driving on or off the road, you and your
passengers should wear safety belts.
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?
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