GMC 2003 Envoy - Manual (Page 241)

Femomber Anti-lock ctnesn't change the (irne you need
to get your fool up to the brake pedal or always
decrease stopping distance. If you get too close to the
vehicle in liont of you, you won'l have lime to apply
your brakes it 1ha( vehicle suddenly slows or stops.
Alvways leave enough госкш up ahead to slap, even
though you have anti'lock brakes.
Using Anti-Lock
Don't pump the brakes. Jusi hold the brake pedal down
firmly and let anthlock work for you^ Vou may feel
the brakes vibiale. or you may notice soma noise, bu|
this is normal,
Braking in Emergencies
With anti-lock^ you can sleer and brake at tha same
tlme^ In many emergencies, steering can hetp you more
than even the very best braking.
Traction Assist System (TAS)
Your vehicle may have a Traction Assist System {TAS)
thal limits wheel spin. This is aspecially useful in
slippery road conditions. The system operates only if It
senses thal one or boih ot tho fear wheels arc
spinning or beginning to lose trad ion. When this
happens, the system reduces engine power to limit
wheel spin,
The LOW TRAC light nejtt lo the button will coma on
wher^ Ihe TAS is limiting wheel spin. You may feel
Of hear [he system working, but this Is normal.
The Traction Assist Systemi may operate on dry roads
under some conditions. When Ibis happens, you
may notice a reduction in acceleration. This is normal
ar>d doesn't n>ean ihere's e problem wilh your vahicle.
Examples of Ihase condifiong ir>clude a hard
acceleration in a lurn, an abrupt upshift or downshift of
the tiansmission or driving on rough roads.
If your vehicle is m cruise control when the TAS begins
to limit wheal spin, the enjisa control will aulomalically
disengage. When road conditions alluw you to safuly
usa it again, you may re*engage Ihe cruise control. See
Cru/jse Contro! Light on p^ge 3-46. When !he TRAC
OFF light on the button is on, the TAS is off and will not
limit wheef spin. Adjust youf driving accordingly.
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