GMC 2001 Yukon XL Owner's Manual page 155

Traction Off Light (If Equipped)
If the light doesn't come on then, the system may
require service; have it fixed so it will be there to warn
you if the system is turned off.
If the TRACTION OFF light stays on, or comes on
when you're driving, there may be a problem with your
Traction Assist System and your vehicle may need
service. When this light is on, the system will not limit
wheel spin. Adjust your driving accordingly.
The TRACTION OFF light may come on for the
following reasons:
D
If you turn the system off by pressing the TAS on/off
button located to the left of the steering wheel, the
light will come on and stay on. To turn the system
back on, press the button again; the light should
go off.
If you have the Traction
Assist System, this light
should come on briefly
when you turn the ignition
to RUN.
D
If you move the shift lever to FIRST (1), the light
will come on and stay on to indicate that the Traction
Assist System is off. This is normal operation. To
turn the system back on, move the shift lever back to
a position other than FIRST (1); the light should go
off. See "Traction Assist System" in the Index.
D
The light will come on and stay on if the TAS
automatic engagement feature has been turned off.
To turn the system on, press the TAS off/on button;
the light should go off. To turn the automatic
engagement feature back on, see "Traction Assist
System" in the Index.
D
If the Traction Assist System is affected by an
-
anti lock brake system, Traction Assist System or
-
engine related problem, the system will turn off and
the light will come on. Have your vehicle serviced.
D
If the vehicle is driven over an extremely rough road,
the system will turn off and the light will come on.
The light will go off a few seconds after the rough
road conditions go away or when the vehicle comes
to a complete stop. This is normal operation.
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