Range Selection

Range Selection





The transmission has six range positions: P, R, N, (D), 2 and 1.

Park
In the PARK position:
^ there is no powerflow through the transmission.
^ the parking pawl locks the output shaft to the case.
^ the engine can be started.
^ the ignition key can be removed.

Reverse
In the REVERSE position:
^ the vehicle can be operated in a rearward direction, at a reduced gear ratio.
^ engine braking will occur.

Neutral
In the NEUTRAL position:
^ there is no powerflow through the transmission.
^ the output shaft is not held and is free to turn.
^ the engine can be started.

Overdrive
Overdrive is the normal position for most forward driving. The OVERDRIVE position provides:
^ Automatic shifts.
^ Apply and release of the torque converter clutch.
^ Maximum fuel economy during normal operation.

Second Position
This position provides:
^ Second gear start and hold.
^ The torque converter clutch can apply and release.
^ Improved traction and engine braking on slippery roads.
^ Engine braking for descending steep grades.

First Position
If this position is selected at normal road speeds, the transmission will shift into second gear, then into first when the vehicle reaches a speed below approximately 45 km/h (28 mph). This position provides:
^ First gear operation only.
^ Engine braking for descending steep grades.

Shift Patterns
Upshifts
Transmission upshifting is controlled by the Powertrain Control Module (PCM). The PCM receives inputs from various engine or vehicle sensors and driver demands to control shift scheduling, shift feel and Torque Converter Clutch (TCC) operation.

Downshifts
Under certain conditions the transmission will downshift automatically to a lower gear range (without moving the gearshift lever). There are three categories of automatic downshifts; Coastdown, Torque Demand and Forced or Kickdown shifts.

Coastdown
The coastdown downshift occurs when the vehicle is coasting down to a stop.

Torque Demand
The torque demand downshift occurs (automatically) during part throttle acceleration when the demand for torque is greater than the engine can provide at that gear ratio. If applied, the transmission will disengage the TCC to provide added acceleration.

Kickdown
For maximum acceleration, the driver can force a downshift by pressing the accelerator pedal to the floor. A forced downshift into a lower gear is possible below calibrated speeds. Specifications for downshift speeds are subject to variations due to tire size, engine and transmission calibration requirements.