GM Owner Manuals - Buick

If cruise control is being used when ETS begins to limit
wheel spin, the cruise control automatically disengages.
The cruise control can be reengaged when road
conditions allow. See Cruise Control on page 3-10 for
more information.
ETS operates in all transmission shift lever positions. But
the system can upshift the transmission only as high as
the chosen shift lever position, so use the lower gears
only when necessary. See Automatic Transmission
Operation on page 2-26 for more information.
This warning light, along
with the TRACTION
CONTROL OFF message,
will display briefly on the
DIC when ETS is not on.
If there is a problem with the system, the SERVICE
TRACTION SYSTEM message will also come on in the
DIC. When this warning light is on, the system will
not limit wheel spin. Adjust your driving accordingly.
To limit wheel spin, especially in slippery road
conditions, ETS should always be left on. But the
system can be turned off if needed. ETS should be
turned off if the vehicle ever gets stuck in sand, mud or
snow and rocking the vehicle is required. See If Your
Vehicle is Stuck in Sand, Mud, Ice, or Snow on
page 4-19.
To turn ETS on or off,
press the Traction Control
button located above
the radio.
When ETS is turned off, the ETS warning light will come
on along with the TRACTION CONTROL OFF message
on the DIC. It will turn off when ETS is turned back on. If
ETS is limiting wheel spin when the traction control button
is pressed, the ETS warning light comes on and ETS will
turn off right away.
4-9