Drive Systems; All-Wheel Drive - Cadillac XT4 Owner's Manual

automatically shift to the next lower
gear if the engine rpm is much
too low.
Gear Shift Light
The gear shift light illuminates in the
instrument cluster when a gear
upshift is recommended for best fuel
economy or performance, depending
on driver input.

Drive Systems

All-Wheel Drive

Vehicles with this feature can operate
in All-Wheel Drive (AWD) Mode.
When the AWD feature is active, the
system transfers engine power,
if required, to all four wheels. The
system is fully automatic and adjusts
to road conditions for improved
traction and control. In FWD Mode
engine power is transferred to the
front wheels only, and the AWD
feature is off.
The AWD feature is automatically
activated when certain modes are
selected using the Driver Mode
Control switch. When an AWD mode
change is requested the light will flash
briefly while the system is engaging
and the AWD light will be displayed
when the system is active. When a
non-AWD Mode is selected, the light
will flash briefly while the system
disengages and a 2WD light will be
displayed when the AWD system is
off. See Driver Mode Control 0 188.
DRIVING AND OPERATING
When a compact spare tyre is
installed on an AWD vehicle, the
system will automatically detect the
compact spare and reduce AWD
performance to protect the system. To
restore AWD operation and prevent
excessive wear on the system, replace
the compact spare with a full-size tyre
as soon as possible. See Compact Spare
Tyre 0 298.
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