Buick 2005 Century - Manual (Page 176)

The ETS operates in THIRD (3) and AUTOMATIC
OVERDRIVE (
X
). If the vehicle is in THIRD (3),
the system can upshift the transaxle to AUTOMATIC
OVERDRIVE (
X
). The ETS is turned off in
SECOND (2) or FIRST (1) gear, and when the parking
brake is set. See Automatic Transaxle Operation on
page 2-21.
While the ETS is on, this
warning light will come on
the instrument panel
cluster to show that the
system is not limiting
wheel spin.
See Enhanced Traction System Warning Light on
page 3-34. Adjust your driving accordingly.
To limit wheel spin, especially in slippery road
conditions, the ETS should always be left on. But the
system can be turned off. The ETS should be turned off
if the vehicle ever gets stuck in sand, mud or snow
and rocking the vehicle is required. See “Rocking Your
Vehicle To Get It Out” under If You Are Stuck:
In Sand, Mud, Ice or Snow on page 4-30.
To turn the system off, move the gear shift lever to
FIRST (1) or SECOND (2) gear. See “Rocking Your
Vehicle To Get It Out” under If You Are Stuck: In Sand,
Mud, Ice or Snow on page 4-30. When the system is
turned off, the TRAC OFF warning light will come on
and stay on. If the ETS is limiting wheel spin when
the system is turned off, the TRAC OFF light will
come on – but the ETS will not turn off right away.
It will continue to operate until there is no longer a
need to limit wheel spin.
4-10