Braking In Emergencies; Traction Assist System (Tas) - GMC Sierra Classic 2007 Owner's Manual

Remember: ABS does not change the time you
need to get your foot up to the brake pedal
or always decrease stopping distance. If you get
too close to the vehicle in front of you, you will not
have time to apply your brakes if that vehicle
suddenly slows or stops. Always leave enough
room up ahead to stop, even though you
have ABS.
Using ABS
Do not pump the brakes. Just hold the brake
pedal down firmly and let anti-lock work for you.
You may feel the brakes vibrate, or you may notice
some noise, but this is normal.

Braking in Emergencies

With ABS, you can steer and brake at the same
time. In many emergencies, steering can help you
more than even the very best braking.

Traction Assist System (TAS)

Your vehicle may have a Traction Assist System
(TAS) that limits wheel spin. This is especially
useful in slippery road conditions. The system
operates only if it senses that one or both of the
rear wheels are spinning or beginning to lose
traction. When this happens, the system reduces
engine power to limit wheel spin.
The traction control system is enabled every time
your vehicle is started. The system will activate
if it senses that any of the wheels are spinning or
beginning to lose traction.
You may hear or feel the system working or notice a
lack of accelerator response, but this is normal.
The Traction Assist System may operate on dry
roads under some conditions. When this happens,
you may notice a reduction in acceleration. This
is normal and doesn't mean there's a problem with
your vehicle. Examples of these conditions
include a hard acceleration in a turn, an abrupt
upshift or downshift of the transmission or driving
on rough roads.
If your vehicle is in cruise control when the TAS
begins to limit wheel spin, the cruise control
will automatically disengage.
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