Jeep 2004 Grand Cherokee Owner's Manual page 183

• Vehicle speed is above approximately 30 mph (48
km/h).
• Transmission has reached normal operating tempera-
ture.
When frequent transmission shifting occurs while using
overdrive, such as when operating the vehicle under
heavy load conditions (for example, in hilly terrain,
strong head winds, or trailer towing), turning off over-
drive will improve performance and extend transmission
life by reducing excessive shifting and heat buildup.
4th and 5th gears (Overdrive) can be locked out by
pressing the O/D OFF switch located on side of the
gearshift lever. The O/D OFF indicator light will illumi-
nate to show that the switch has been activated. When
the light is on, 4th and 5th gears (Overdrive) are locked
out. Pressing the switch a second time restores the
Overdrive function. The lockout feature is useful when
towing a trailer or carrying a heavy load.
STARTING AND OPERATING 183
The O/D OFF feature must be selected, if desired, each
time the engine is started.
NOTE: If the vehicle is started in cold outside tempera-
tures, shifts into Overdrive may be delayed (4.7L engines
only). Normal Overdrive and shifting operation will
resume when the temperature of the transmission
5