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346 STARTING AND OPERATING
CAUTION! (Continued)
Towing" in "Starting And Operating" and "Towing A
Disabled Vehicle" in "What To Do In Emergencies" for
further information.
DRIVE (D)
This range should be used for most city and highway driving.
It provides the smoothest upshifts and downshifts, and the best
fuel economy. The transmission automatically upshifts through
all forward gears. The DRIVE position provides optimum
driving characteristics under all normal operating conditions.
When frequent transmission shifting occurs (such as when
operating the vehicle under heavy loading conditions, in hilly
terrain, traveling into strong head winds, or while towing a
heavy trailer), use the AutoStick shift control (refer to
"AutoStick" in this section for further information) to select a
lower gear. Under these conditions, using a lower gear will
improve performance and extend transmission life by reduc-
ing excessive shifting and heat buildup.
If the transmission temperature exceeds normal operating
limits, the powertrain controller will modify the transmis-
sion shift schedule and expand the range of torque con-
verter clutch engagement. This is done to prevent trans-
mission damage due to overheating.
During cold temperatures, transmission operation may be
modified depending on engine and transmission tempera-
ture as well as vehicle speed. This feature improves warm
up time of the engine and transmission to achieve maxi-
mum efficiency. Engagement of the torque converter clutch
is inhibited until the transmission fluid is warm (refer to
the "Note" under "Torque Converter Clutch" in this sec-
tion). During extremely cold temperatures (-16°F [-27°C] or
below), operation may briefly be limited to only second
gear (for four-speed transmission) or third gear (for six-
speed transmission). Normal operation will resume once
the transmission temperature has risen to a suitable level.
Transmission Limp Home Mode
Transmission function is monitored electronically for ab-
normal conditions. If a condition is detected that could
result in transmission damage, Transmission Limp Home
Mode is activated. In this mode, the transmission remains
in second gear (for four-speed transmission) or third gear
(for six-speed transmission) regardless of which forward
gear is selected. PARK, REVERSE, and NEUTRAL will
continue to operate. The Malfunction Indicator Light (MIL)
may be illuminated. Limp Home Mode allows the vehicle
to be driven to an authorized dealer for service without
damaging the transmission.
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