Buick 2004 Century - Manual (Page 175)

Enhanced Traction System (ETS)
If the vehicle has an Enhanced Traction System (ETS) it
will limit wheel spin. This is especially useful in slippery
road conditions. The system operates only if it senses
that one or both of the front wheels are spinning or
beginning to lose traction. When this happens,
the system reduces engine power and may also upshift
the transaxle to limit wheel spin.
This light will come on the
instrument panel cluster
while the ETS is limiting
wheel spin. See Enhanced
Traction System Warning
Light on page 3-34.
You may feel or hear the system working, but this is
normal.
If the vehicle is in cruise control when the enhanced
traction system begins to limit wheel spin, the cruise
control will automatically disengage. When road
conditions allow safe use of it again, you can re-engage
the cruise control. See “Cruise Control” under Turn
Signal/Multifunction Lever on page 3-5.
The ETS operates in THIRD (3) and OVERDRIVE (
X
).
If the vehicle is in THIRD (3), the system can upshift
the transaxle to 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 2-22.
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.
4-9