Automatic Transmission Range Selection

Automatic Transmission 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 may be started.
^ The ignition key may be removed.

Reverse
In the REVERSE position:
^ The vehicle may 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 may 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.
^ Automatic shift 1-4 with O/D cancelled (5R44E/5R55E)
^ Engine braking with coast clutch applied in 1-4, R (5R44E/5R55E)

Second Position 3rd Gear (5R44E/5R55E)
The 2nd position provides:
^ Second gear start and hold.
^ The torque converter clutch may apply and release.
^ Improved traction on slippery roads.
^ Engine braking.

Manual Low 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 30 km/h (48 mph).
This position provides:
^ First gear operation only.
^ Engine braking for descending steep grades.