Overdrive Operation
The Overdrive automatic transmission contains an elec-
tronically controlled fourth and fifth gear (Overdrive).
The transmission will automatically shift from DRIVE to
Overdrive if the following conditions are present:
•
the shift lever is in DRIVE;
•
the engine coolant (antifreeze) has reached normal
operating temperature;
•
vehicle speed is above approximately 30 mph (48 km/h);
•
the “TOW/HAUL” switch has not been activated;
•
transmission has reached normal operating temperature.
NOTE:
If the vehicle is started in extremely cold tem-
peratures, the transmission may not shift into Overdrive
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.
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 “Transmission
Temperature Warning Light” may illuminate and the
transmission may downshift out of Overdrive until the
transmission cools down. After cool down, the transmis-
sion will resume normal operation.
The transmission will downshift from Overdrive to
DRIVE if the accelerator pedal is fully pressed at vehicle
speeds above approximately 35 mph (56 km/h).
When To Use “TOW/HAUL” Mode
When driving in hilly areas, towing a trailer, carrying a
heavy load, etc., and frequent transmission shifting oc-
curs, press the “TOW/HAUL” switch. This will improve
272
STARTING AND OPERATING
Содержание 2011 Chassis Cab
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Страница 6: ...INTRODUCTION 5 I n f o r ma t i o nP r o v i d e db y...
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Страница 116: ...3 UNDERSTANDING THE FEATURES OF YOUR VEHICLE 115 I n f o r ma t i o nP r o v i d e db y...
Страница 178: ...INSTRUMENT CLUSTER BASE 4 UNDERSTANDING YOUR INSTRUMENT PANEL 177 I n f o r ma t i o nP r o v i d e db y...
Страница 179: ...INSTRUMENT CLUSTER PREMIUM 178 UNDERSTANDING YOUR INSTRUMENT PANEL I n f o r ma t i o nP r o v i d e db y...
Страница 259: ...Operating Tips 258 UNDERSTANDING YOUR INSTRUMENT PANEL I n f o r ma t i o nP r o v i d e db y...
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Страница 308: ...4500 5500 Tire Inflation 5 STARTING AND OPERATING 307 I n f o r ma t i o nP r o v i d e db y...
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