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“1” 1st
For driving up very steep hills and for engine braking at
low speeds (25 mph {40 km/h} or less) when going
downhill. To prevent excessive engine speed do not
exceed 25 mph (40 km/h) in this range.
OVERDRIVE Operation
The OVERDRIVE automatic transmission contains an
electronically controlled fourth and fifth (if equipped)
speed (OVERDRIVE). The transmission will automati-
cally shift from DRIVE to OVERDRIVE if the following
conditions are present:
•
the transmission selector is in DRIVE;
•
the engine coolant has reached normal operating tem-
perature;
•
vehicle speed is above approximately 30 mph (48
km/h);
•
the TOW/HAUL switch has not been activated;
•
transmission has reached normal operating tempera-
ture.
NOTE: If the vehicle is started in extremely cold tem-
peratures, the transmission may not shift into OVER-
DRIVE and will automatically select the most desirable
gear for operation at this temperature. Normal operation
will resume when the transmission fluid temperature has
risen to a suitable level. Refer also to the Note under
torque converter clutch, later in this section.
If the transmission temperature gets extremely hot, the
transmission will automatically select the most desirable
gear for operation at this temperature. If the transmission
temperature becomes hot enough, the “TRANS TEMP”
light may illuminate and the transmission may down-
shift out of OVERDRIVE until the transmission cools
down. After cooldown, the transmission will resume
normal operation.
STARTING AND OPERATING 277
5
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