Dodge 2010 Ram Truck Chassis Owner's Manual page 225

DRIVE
This position provides all forward gears, including fourth
gear direct and fifth or sixth (if equipped) gear overdrive
(refer to Overdrive Operation in this section). Use this
range for most city and highway driving.
THIRD
Use this position for driving in slight heavy city traffic or
on mountain roads where more precise speed control is
desirable. Use it also when climbing long grades, and for
engine braking when descending moderately steep
grades. To prevent excessive engine speed do not exceed
40 mph (64 km/h) in this range.
SECOND
Use this position for driving in more severe conditions
and lower speeds than third gear. To prevent excessive
engine speed do not exceed 25 mph (40 km/h) in this
range.
FIRST
Use this position for driving up very steep hills and for
engine braking at low speeds 12 mph (19 km/h) or less
when going downhill. To prevent excessive engine speed,
do not exceed 12 mph (19 km/h) in this range.
NOTE: Use caution when operating a heavily loaded
vehicle in second or first gear in high ambient tempera-
tures as torque converter slip can impose significant
additional heat load on the cooling system.
Overdrive Operation
The Overdrive automatic transmission contains an elec-
tronically controlled fifth and sixth (if equipped) speed
(Overdrive). The transmission will automatically shift
from Drive to Overdrive if the following conditions are
present:
• the transmission selector is in DRIVE;
STARTING AND OPERATING 223
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