Dodge Durango

 Service Manual

Transmission and Transfer Case » Description and operation
Gearshift mechanism

DESCRIPTION

The gear shift mechanism provides six shift positions which are:

• Park (P)
• Reverse (R)
• Neutral (N)
• Drive (D)
• Manual second (2)
• Manual low (1)

OPERATION

Manual low (1) range provides first gear only.

Overrun braking is also provided in this range. Manual second (2) range provides first and second gear only.

Drive range provides first, second third and overdrive fourth gear ranges. The shift into overdrive fourth gear range occurs only after the transmission has completed the shift into D third gear range. No further movement of the shift mechanism is required to complete the 3-4 shift.

The fourth gear upshift occurs automatically when the overdrive selector switch is in the ON position.

No upshift to fourth gear will occur if any of the following are true:

• The transmission fluid temperature is below 10 C (50 F) or above 121 C (250 F).
• The shift to third is not yet complete.
• Vehicle speed is too low for the 3-4 shift to occur.
• Battery temperature is below -5 C (23 F).

42/44 Re transmission

Fluid

Torque converter

Oil pump

Valve body

Accumulator

Pistons

Front clutch

Rear clutch

Overdrive clutch

Overrunning clutch

Planetary gearset

Bands

Servos

Gearshift mechanism

Converter drainback valve

Powertrain control module (pcm)

Electronic governor

Governor pressure curves

Overdrive off switch