5.
Chock the rear tires and take any other steps
necessary to keep the vehicle from moving.
Range Inhibit Indicator, 2000 Series
A RANGE INHIBIT indicator is a standard feature of
the 2000 series transmissions. The RANGE INHIBIT
indicator comes on to alert the driver that transmis-
sion operation is being inhibited and that the range
shifts being requested by the driver may not occur.
When certain operating conditions are detected by
the transmission control module (TCM), the controls
will lock the transmission in the current operating
range.
Shift inhibits occur under the following conditions:
•
Shifts from neutral to reverse or from neutral to
a forward range when the engine is above idle,
greater than 900 rpm.
•
Forward/reverse directional shifts are typically
not permitted if appreciable output shaft speed
is detected.
•
When some types of unusual transmission op-
erating conditions are detected by the TCM,
the TCM temporarily limits transmission opera-
tion until the vehicle can be driven to a service
location. When this type of situation is de-
tected, the TCM will lock the transmission in a
safe gear range.
•
The TCM will prevent shifts from park or neu-
tral to another range when auxiliary equipment
is in operation.
•
If a shift from a higher to a lower gear causes
the engine to overspeed.
Operating Instructions, 2000 Series
Transmissions
2000 series transmissions are electronically con-
trolled. The shift selector provides four forward
ranges and one reverse range. A T-handle shift con-
trol is used by the driver to select the ranges. See
Fig. 10.1.
P (Park)
Use park, if so equipped, when turning the engine on
or off, to check vehicle accessories, or to operate the
engine in idle for longer than 5 minutes. This position
places the transmission in neutral and engages the
park pawl of the transmission.
NOTE: This does not apply the parking brake.
The park pawl is standard on the 2200 series
transmission. The park pawl effectively grounds
the transmission output shaft, thereby prevent-
ing rotation of the driveline. Provided the vehicle
is stationary, selecting P (park) on the shift se-
lector, if so equipped, places the transmission in
neutral and engages the park pawl.
09/21/2012 f270165
Fig. 10.1, T-Handle Shifter (standard)
Transmission
10.2
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